@article{GosensGilmanovaLilliestam2021, author = {Gosens, Jorrit and Gilmanova, Alina and Lilliestam, Johan}, title = {Windows of opportunity for catching up in formative clean-tech sectors and the rise of China in concentrated solar power}, series = {Environmental innovation and societal transitions}, volume = {39}, journal = {Environmental innovation and societal transitions}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2210-4224}, doi = {10.1016/j.eist.2021.03.005}, pages = {86 -- 106}, year = {2021}, abstract = {We analyse the potential for industry entry and catching up by latecomer countries or firms in formative sectors, by deriving a framework that builds on the concept of windows of opportunity for catching up. This framework highlights differences in technological, market, and institutional characteristics between formative and mature sectors, and elaborates how this may affect opportunities for catching up. We apply this framework to the global Concentrated Solar Power sector, in which China has rapidly narrowed the gap to the global forefront in terms of technological capabilities and market competitiveness. We find that the formative nature of the sector resulted in turbulent development of the technological, market, and institutional dimensions, making it more difficult for early leaders to retain leadership, and therefore easier for latecomer firms or countries to catch up. This signals an increased role in early-stage technology development in the next phase of the energy transition.}, language = {en} } @misc{Jianjun2004, author = {Jianjun, Cui}, title = {Welche internationale Ordnung braucht das 21. Jahrhundert?}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-46691}, year = {2004}, abstract = {Mit dem Ende des Kalten Krieges und der Aufl{\"o}sung der bipolaren Konfrontation trat die Diskussion um eine neue internationale Ordnung auf die politische Agenda. Staaten haben verschiedene Szenarien eingebracht, um f{\"u}r Akzeptanz in der neu geordneten Weltgemeinschaft zu werben. Zu Beginn des 21. Jahrhunderts, insbesondere nach den Anschl{\"a}gen vom 11. September 2001, hat sich die internationale Lage sehr ver{\"a}ndert. Die Etablierung einer neuen Weltordnung ist dringlicher denn je geworden. Aber wie soll diese neue Ordnung aussehen, und wie kann sie Frieden und Entwicklung wirksam voranbringen?}, language = {de} } @article{CarlaUhinkFreitag2022, author = {Carl{\`a}-Uhink, Filippo and Freitag, Florian}, title = {Theme Park Imitations}, series = {Cultural History}, volume = {11}, journal = {Cultural History}, number = {2}, publisher = {Edinburgh University Press}, address = {Edinburgh}, issn = {2045-290X}, doi = {10.3366/cult.2022.0267}, pages = {181 -- 198}, year = {2022}, abstract = {Theme parks frequently draw not only on historical themes, from antiquity to the roaring twenties, but also on their own history - that is, the history of the medium of the theme park itself. This article uses the example of the Happy World ride at Happy Valley Beijing (China) to discuss theme park imitations, that is, the fact that theme parks frequently borrow individual elements (themes, technologies, visuals, layouts, names) and/or entire units (rides, restaurants, themed areas) from each other. Opened in 2014 in the Greek-themed Aegean Harbour section of Happy Valley Beijing, Happy World may upon first sight look like an almost exact copy of Disney's 'it's a small world' (opened at Disneyland in California in 1966) but turns out to be, upon closer examination, a complex refunctionalization of central elements of 'it's a small world' that establishes meaningful connections between (ancient) Greece and the city of Beijing via the theme of the Olympic Games: drawing on the origins of 'it's a small world' in the 1964-5 New York World's Fair and the latter's motto of 'Peace through Understanding', Happy World takes visitors on a journey from the ancient Olympiad to contemporary Beijing (the site of the 2008 Summer and the 2022 Winter Olympic Games) to offer a theme park rendition of the 2008 Olympic torch relay as an homage to 'the spirit [of peace, respect, and friendship] in the people's [sic] of the world'.}, language = {en} } @misc{TardifFluteauDonnadieuetal.2020, author = {Tardif, Delphine and Fluteau, Fr{\´e}d{\´e}ric and Donnadieu, Yannick and Le Hir, Guillaume and Ladant, Jean-Baptiste and Sepulchre, Pierre and Licht, Alexis and Poblete, Fernando and Dupont-Nivet, Guillaume}, title = {The origin of Asian monsoons}, series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1436}, issn = {1866-8372}, doi = {10.25932/publishup-51677}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-516770}, pages = {21}, year = {2020}, abstract = {The Cenozoic inception and development of the Asian monsoons remain unclear and have generated much debate, as several hypotheses regarding circulation patterns at work in Asia during the Eocene have been proposed in the few last decades. These include (a) the existence of modern-like monsoons since the early Eocene; (b) that of a weak South Asian monsoon (SAM) and little to no East Asian monsoon (EAM); or (c) a prevalence of the Intertropical Convergence Zone (ITCZ) migrations, also referred to as Indonesian-Australian monsoon (I-AM). As SAM and EAM are supposed to have been triggered or enhanced primarily by Asian palaeogeographic changes, their possible inception in the very dynamic Eocene palaeogeographic context remains an open question, both in the modelling and field-based communities. We investigate here Eocene Asian climate conditions using the IPSL-CM5A2 (Sepulchre et al., 2019) earth system model and revised palaeogeographies. Our Eocene climate simulation yields atmospheric circulation patterns in Asia substantially different from modern conditions. A large high-pressure area is simulated over the Tethys ocean, which generates intense low tropospheric winds blowing southward along the western flank of the proto-Himalayan-Tibetan plateau (HTP) system. This low-level wind system blocks, to latitudes lower than 10 degrees N, the migration of humid and warm air masses coming from the Indian Ocean. This strongly contrasts with the modern SAM, during which equatorial air masses reach a latitude of 20-25 degrees N over India and southeastern China. Another specific feature of our Eocene simulation is the widespread subsidence taking place over northern India in the midtroposphere (around 5000 m), preventing deep convective updraught that would transport water vapour up to the condensation level. Both processes lead to the onset of a broad arid region located over northern India and over the HTP. More humid regions of high seasonality in precipitation encircle this arid area, due to the prevalence of the Intertropical Convergence Zone (ITCZ) migrations (or Indonesian-Australian monsoon, I-AM) rather than monsoons. Although the existence of this central arid region may partly result from the specifics of our simulation (model dependence and palaeogeographic uncertainties) and has yet to be confirmed by proxy records, most of the observational evidence for Eocene monsoons are located in the highly seasonal transition zone between the arid area and the more humid surroundings. We thus suggest that a zonal arid climate prevailed over Asia before the initiation of monsoons that most likely occurred following Eocene palaeogeographic changes. Our results also show that precipitation seasonality should be used with caution to infer the presence of a monsoonal circulation and that the collection of new data in this arid area is of paramount importance to allow the debate to move forward.}, language = {en} } @article{TardifFluteauDonnadieuetal.2020, author = {Tardif, Delphine and Fluteau, Fr{\´e}d{\´e}ric and Donnadieu, Yannick and Le Hir, Guillaume and Ladant, Jean-Baptiste and Sepulchre, Pierre and Licht, Alexis and Poblete, Fernando and Dupont-Nivet, Guillaume}, title = {The origin of Asian monsoons}, series = {Climate of the Past}, volume = {16}, journal = {Climate of the Past}, number = {3}, publisher = {Copernicus Publications}, address = {G{\"o}ttingen}, issn = {1814-9332}, doi = {10.5194/cp-16-847-2020}, pages = {847 -- 865}, year = {2020}, abstract = {The Cenozoic inception and development of the Asian monsoons remain unclear and have generated much debate, as several hypotheses regarding circulation patterns at work in Asia during the Eocene have been proposed in the few last decades. These include (a) the existence of modern-like monsoons since the early Eocene; (b) that of a weak South Asian monsoon (SAM) and little to no East Asian monsoon (EAM); or (c) a prevalence of the Intertropical Convergence Zone (ITCZ) migrations, also referred to as Indonesian-Australian monsoon (I-AM). As SAM and EAM are supposed to have been triggered or enhanced primarily by Asian palaeogeographic changes, their possible inception in the very dynamic Eocene palaeogeographic context remains an open question, both in the modelling and field-based communities. We investigate here Eocene Asian climate conditions using the IPSL-CM5A2 (Sepulchre et al., 2019) earth system model and revised palaeogeographies. Our Eocene climate simulation yields atmospheric circulation patterns in Asia substantially different from modern conditions. A large high-pressure area is simulated over the Tethys ocean, which generates intense low tropospheric winds blowing southward along the western flank of the proto-Himalayan-Tibetan plateau (HTP) system. This low-level wind system blocks, to latitudes lower than 10 degrees N, the migration of humid and warm air masses coming from the Indian Ocean. This strongly contrasts with the modern SAM, during which equatorial air masses reach a latitude of 20-25 degrees N over India and southeastern China. Another specific feature of our Eocene simulation is the widespread subsidence taking place over northern India in the midtroposphere (around 5000 m), preventing deep convective updraught that would transport water vapour up to the condensation level. Both processes lead to the onset of a broad arid region located over northern India and over the HTP. More humid regions of high seasonality in precipitation encircle this arid area, due to the prevalence of the Intertropical Convergence Zone (ITCZ) migrations (or Indonesian-Australian monsoon, I-AM) rather than monsoons. Although the existence of this central arid region may partly result from the specifics of our simulation (model dependence and palaeogeographic uncertainties) and has yet to be confirmed by proxy records, most of the observational evidence for Eocene monsoons are located in the highly seasonal transition zone between the arid area and the more humid surroundings. We thus suggest that a zonal arid climate prevailed over Asia before the initiation of monsoons that most likely occurred following Eocene palaeogeographic changes. Our results also show that precipitation seasonality should be used with caution to infer the presence of a monsoonal circulation and that the collection of new data in this arid area is of paramount importance to allow the debate to move forward.}, language = {en} } @misc{CaoHerzschuhNietal.2014, author = {Cao, Xianyong and Herzschuh, Ulrike and Ni, Jian and Zhao, Yan and B{\"o}hmer, Thomas}, title = {Spatial and temporal distributions of major tree taxa in eastern continental Asia during the last 22,000 years}, series = {The Holocene}, volume = {25}, journal = {The Holocene}, number = {1}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-404176}, pages = {13}, year = {2014}, abstract = {This study investigates the spatial and temporal distributions of 14 key arboreal taxa and their driving forces during the last 22,000 calendar years before ad 1950 (kyr BP) using a taxonomically harmonized and temporally standardized fossil pollen dataset with a 500-year resolution from the eastern part of continental Asia. Logistic regression was used to estimate pollen abundance thresholds for vegetation occurrence (presence or dominance), based on modern pollen data and present ranges of 14 taxa in China. Our investigation reveals marked changes in spatial and temporal distributions of the major arboreal taxa. The thermophilous (Castanea, Castanopsis, Cyclobalanopsis, Fagus, Pterocarya) and eurythermal (Juglans, Quercus, Tilia, Ulmus) broadleaved tree taxa were restricted to the current tropical or subtropical areas of China during the Last Glacial Maximum (LGM) and spread northward since c. 14.5 kyr BP. Betula and conifer taxa (Abies, Picea, Pinus), in contrast, retained a wider distribution during the LGM and showed no distinct expansion direction during the Late Glacial. Since the late mid-Holocene, the abundance but not the spatial extent of most trees decreased. The changes in spatial and temporal distributions for the 14 taxa are a reflection of climate changes, in particular monsoonal moisture, and, in the late Holocene, human impact. The post-LGM expansion patterns in eastern continental China seem to be different from those reported for Europe and North America, for example, the westward spread for eurythermal broadleaved taxa.}, language = {en} } @article{CaoHerzschuhNietal.2015, author = {Cao, Xianyong and Herzschuh, Ulrike and Ni, Jian and Zhao, Yan and B{\"o}hmer, Thomas}, title = {Spatial and temporal distributions of major tree taxa in eastern continental Asia during the last 22,000 years}, series = {The Holocene : an interdisciplinary journal focusing on recent environmental change}, volume = {25}, journal = {The Holocene : an interdisciplinary journal focusing on recent environmental change}, number = {1}, publisher = {Sage Publ.}, address = {London}, issn = {0959-6836}, doi = {10.1177/0959683614556385}, pages = {79 -- 91}, year = {2015}, abstract = {This study investigates the spatial and temporal distributions of 14 key arboreal taxa and their driving forces during the last 22,000 calendar years before ad 1950 (kyr BP) using a taxonomically harmonized and temporally standardized fossil pollen dataset with a 500-year resolution from the eastern part of continental Asia. Logistic regression was used to estimate pollen abundance thresholds for vegetation occurrence (presence or dominance), based on modern pollen data and present ranges of 14 taxa in China. Our investigation reveals marked changes in spatial and temporal distributions of the major arboreal taxa. The thermophilous (Castanea, Castanopsis, Cyclobalanopsis, Fagus, Pterocarya) and eurythermal (Juglans, Quercus, Tilia, Ulmus) broadleaved tree taxa were restricted to the current tropical or subtropical areas of China during the Last Glacial Maximum (LGM) and spread northward since c. 14.5kyr BP. Betula and conifer taxa (Abies, Picea, Pinus), in contrast, retained a wider distribution during the LGM and showed no distinct expansion direction during the Late Glacial. Since the late mid-Holocene, the abundance but not the spatial extent of most trees decreased. The changes in spatial and temporal distributions for the 14 taxa are a reflection of climate changes, in particular monsoonal moisture, and, in the late Holocene, human impact. The post-LGM expansion patterns in eastern continental China seem to be different from those reported for Europe and North America, for example, the westward spread for eurythermal broadleaved taxa.}, language = {en} } @incollection{Rieck2023, author = {Rieck, Christian E.}, title = {Region ohne Richtung}, series = {Zwischen Moskau, Peking und Washington: Lateinamerika in der Großmachtkonkurrenz}, booktitle = {Zwischen Moskau, Peking und Washington: Lateinamerika in der Großmachtkonkurrenz}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-7560-0033-3}, doi = {10.5771/9783748936121}, pages = {121 -- 130}, year = {2023}, abstract = {Welche Auswirkungen wird die aufziehende Großm{\"a}chtekonkurrenz also auf die regionale Sicherheitsordnung haben? Der Beitrag n{\"a}hert sich dieser Frage {\"u}ber die regionalen Bedingungsfaktoren, die den Rahmen f{\"u}r jegliche Ingerenz extraregionaler M{\"a}chte bilden: Die regionalen Sicherheitskomplexe in Lateinamerika und der Karibik, einschließlich der Regionalorganisationen und Regionalm{\"a}chte, sowie der Einflusssph{\"a}ren und Anreizsysteme der Großm{\"a}chte. Am Ende wagt der Beitrag einen Ausblick auf die Entwicklung der lateinamerikanischen Sicherheitspolitik im Angesicht der Geopolitik der Großm{\"a}chte. Die hier vorgestellte Kernthese wagt ein strukturelles und deshalb wenig alarmistisches Argument: Die Großm{\"a}chtekonkurrenz wird die bestehende Fragmentierung der regionalen Sicherheitsordnung weiter vertiefen, doch wird die Region gleichzeitig nicht substanziell an Agency gegen{\"u}ber den Großm{\"a}chten verlieren. Der Schl{\"u}ssel hierzu ist die außenpolitische Maxime der „gebundenen {\"A}quidistanz", die Dependenzen diversifiziert und damit nicht als Widerspruch, sondern als Positivsummenspiel versteht.}, language = {de} } @article{ZhangGuoChen2020, author = {Zhang, Yan-qiu and Guo, Zeng-hui and Chen, Dai-zhao}, title = {Porosity distribution in cyclic dolomites of the Lower Qiulitag Group (Upper Cambrian) in northwestern Tarim Basin, China}, series = {China geology}, volume = {3}, journal = {China geology}, number = {3}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2096-5192}, pages = {425 -- 444}, year = {2020}, abstract = {Increasing interests in hydrocarbon resources at depths have drawn greater attentions to the deeply-buried carbonate reservoirs in the Tarim Basin in China. In this study, the cyclic dolomite rocks of Upper Cambrian Lower Qiulitag Group from four outcrop sections in northwestern Tarim Basin were selected to investigate and evaluate the petrophysical properties in relation to depositional facies and cyclicity. The Lower Qiulitag Group includes ten lithofacies, which were deposited in intermediate to shallow subtidal, restricted shallow subtidal, intertidal, and supratidal environments on a carbonate ramp system. These lithofacies are vertically stacked into repeated shallowing-upward, meter-scale cycles which are further grouped into six third-order depositional sequences (Sq1 to Sq6). There are variable types of pore spaces in the Lower Qiulitag Group dolomite rocks, including interparticle, intraparticle, and fenestral pores of primary origin, inter crystal, and vuggy pores of late diagenetic modification. The porosity in the dolomites is generally facies-selective as that the microbially-originated thrombolites and stromatolites generally yield a relatively high porosity. In contrast, the high-energy ooidal grainstones generally have very low porosity. In this case, the microbialite-based peritidal cycles and peritidal cycle-dominated highstand (or regressive) successions have relatively high volumes of pore spaces, although highly fluctuating (or vertical inhomogeneous). Accordingly, the grainstone-based subtidal cycles and subtidal cycle-dominated transgressive successions generally yield extremely low porosity. This scenario indicates that porosity development and preservation in the thick dolomite successions are primarily controlled by depositional facies which were influenced by sea-level fluctuations of different orders and later diagenetic overprinting.}, language = {en} } @article{TianCaoDallmeyeretal.2017, author = {Tian, Fang and Cao, Xianyong and Dallmeyer, Anne and Zhao, Yan and Ni, Jian and Herzschuh, Ulrike}, title = {Pollen-climate relationships in time (9 ka, 6 ka, 0 ka) and space (upland vs. lowland) in eastern continental Asia}, series = {Quaternary science reviews : the international multidisciplinary research and review journal}, volume = {156}, journal = {Quaternary science reviews : the international multidisciplinary research and review journal}, publisher = {Elsevier}, address = {Oxford}, issn = {0277-3791}, doi = {10.1016/j.quascirev.2016.11.027}, pages = {1 -- 11}, year = {2017}, abstract = {Temporal and spatial stability of the vegetation climate relationship is a basic ecological assumption for pollen-based quantitative inferences of past climate change and for predicting future vegetation. We explore this assumption for the Holocene in eastern continental Asia (China, Mongolia). Boosted regression trees (BRT) between fossil pollen taxa percentages (Abies, Artemisia, Betula, Chenopodiaceae, Cyperaceae, Ephedra, Picea, Pinus, Poaceae and Quercus) and climate model outputs of mean annual precipitation (P-ann) and mean temperature of the warmest month (Mt(wa)) for 9 and 6 ka (ka = thousand years before present) were set up and results compared to those obtained from relating modern pollen to modern climate. Overall, our results reveal only slight temporal differences in the pollen climate relationships. Our analyses suggest that the importance of P-ann compared with Mt(wa) for taxa distribution is higher today than it was at 6 ka and 9 ka. In particular, the relevance of P-ann for Picea and Pinus increases and has become the main determinant. This change in the climate tree pollen relationship parallels a widespread tree pollen decrease in north-central China and the eastern Tibetan Plateau. We assume that this is at least partly related to vegetation climate disequilibrium originating from human impact. Increased atmospheric CO2 concentration may have permitted the expansion of moisture-loving herb taxa (Cyperaceae and Poaceae) during the late Holocene into arid/semi-arid areas. We furthermore find that the pollen climate relationship between north-central China and the eastern Tibetan Plateau is generally similar, but that regional differences are larger than temporal differences. In summary, vegetation climate relationships in China are generally stable in space and time, and pollen-based climate reconstructions can be applied to the Holocene. Regional differences imply the calibration-set should be restricted spatially.}, language = {en} } @misc{Heberer2006, author = {Heberer, Thomas}, title = {Party State im "Reich der Mitte" : zum politischen System in China}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-12484}, year = {2006}, abstract = {China ist auf dem Weg zu einer offeneren Gesellschaft mit zunehmender Partizipation, gr{\"o}ßerer rechtlicher Sicherheit und individueller Autonomie. Der Staat zog sich aus vielen Bereichen zur{\"u}ck, {\"o}konomische Ziele bestimmen seine Priorit{\"a}ten. Die Entwicklungserfolge brachten jedoch eine Legitimationskrise des Staates mit sich. Vier Dilemmata, die China heute konfrontieren, werden aufgezeigt und Hypothesen zur Charakterisierung des chinesischen party state diskutiert.}, language = {de} } @misc{deHaas2011, author = {de Haas, Marcel}, title = {Moskaus n{\"u}tzliches Instrument? : Russland und die Shanghai-Gruppe}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-50046}, year = {2011}, abstract = {Russland sieht in der Shanghai-Gruppe ein wichtiges außen- und sicherheitspolitisches Instrument. Damit sollen sowohl das internationale Profil verbessert als auch milit{\"a}rische Interessen (Waffenexporte) umgesetzt werden. Obwohl sich das Verh{\"a}ltnis zu China deutlich verbesserte, ist es russisches Interesse, mittels der SCO Chinas Einfluss in Zentralasien zu begrenzen. Angesichts der strategischen Differenzen zwischen Moskau und Peking stellt sich das Problem des m{\"o}glichen Bruchs der Shanghai-Gruppe.}, language = {de} } @phdthesis{Michalczyk2019, author = {Michalczyk, Anna}, title = {Modelling of nitrogen cycles in intensive winter wheat-summer maize double cropping systems in the North China Plain}, doi = {10.25932/publishup-44421}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-444213}, school = {Universit{\"a}t Potsdam}, pages = {X, 154}, year = {2019}, abstract = {The North China Plain (NCP) is one of the most productive and intensive agricultural regions in China. High doses of mineral nitrogen (N) fertiliser, often combined with flood irrigation, are applied, resulting in N surplus, groundwater depletion and environmental pollution. The objectives of this thesis were to use the HERMES model to simulate the N cycle in winter wheat (Triticum aestivum L.)-summer maize (Zea mays L.) double crop rotations and show the performance of the HERMES model, of the new ammonia volatilisation sub-module and of the new nitrification inhibition tool in the NCP. Further objectives were to assess the models potential to save N and water on plot and county scale, as well as on short and long-term. Additionally, improved management strategies with the help of a model-based nitrogen fertiliser recommendation (NFR) and adapted irrigation, should be found. Results showed that the HERMES model performed well under growing conditions of the NCP and was able to describe the relevant processes related to soil-plant interactions concerning N and water during a 2.5 year field experiment. No differences in grain yield between the real-time model-based NFR and the other treatments of the experiments on plot scale in Quzhou County could be found. Simulations with increasing amounts of irrigation resulted in significantly higher N leaching, higher N requirements of the NFR and reduced yields. Thus, conventional flood irrigation as currently practised by the farmers bears great uncertainties and exact irrigation amounts should be known for future simulation studies. In the best-practice scenario simulation on plot-scale, N input and N leaching, but also irrigation water could be reduced strongly within 2 years. Thus, the model-based NFR in combination with adapted irrigation had the highest potential to reduce nitrate leaching, compared to farmers practice and mineral N (Nmin)-reduced treatments. Also the calibrated and validated ammonia volatilisation sub-module of the HERMES model worked well under the climatic and soil conditions of northern China. Simple ammonia volatilisation approaches gave also satisfying results compared to process-oriented approaches. During the simulation with Ammonium sulphate Nitrate with nitrification inhibitor (ASNDMPP) ammonia volatilisation was higher than in the simulation without nitrification inhibitor, while the result for nitrate leaching was the opposite. Although nitrification worked well in the model, nitrification-born nitrous oxide emissions should be considered in future. Results of the simulated annual long-term (31 years) N losses in whole Quzhou County in Hebei Province were 296.8 kg N ha-1 under common farmers practice treatment and 101.7 kg N ha-1 under optimised treatment including NFR and automated irrigation (OPTai). Spatial differences in simulated N losses throughout Quzhou County, could only be found due to different N inputs. Simulations of an optimised treatment, could save on average more than 260 kg N ha-1a-1 from fertiliser input and 190 kg N ha-1a-1 from N losses and around 115.7 mm a-1 of water, compared to farmers practice. These long-term simulation results showed lower N and water saving potential, compared to short-term simulations and underline the necessity of long-term simulations to overcome the effect of high initial N stocks in soil. Additionally, the OPTai worked best on clay loam soil except for a high simulated denitrification loss, while the simulations using farmers practice irrigation could not match the actual water needs resulting in yield decline, especially for winter wheat. Thus, a precise adaption of management to actual weather conditions and plant growth needs is necessary for future simulations. However, the optimised treatments did not seem to be able to maintain the soil organic matter pools, even with full crop residue input. Extra organic inputs seem to be required to maintain soil quality in the optimised treatments. HERMES is a relatively simple model, with regard to data input requirements, to simulate the N cycle. It can offer interpretation of management options on plot, on county and regional scale for extension and research staff. Also in combination with other N and water saving methods the model promises to be a useful tool.}, language = {en} } @incollection{Kuhlmann2016, author = {Kuhlmann, Sabine}, title = {Local Government in Germany}, series = {Comparative Studies on Vertical Administration Reforms in China and Germany (Speyerer Forschungsberichte ; 285)}, booktitle = {Comparative Studies on Vertical Administration Reforms in China and Germany (Speyerer Forschungsberichte ; 285)}, editor = {Wang, Yukai and F{\"a}rber, Gisela}, publisher = {Deutsches Forschungsinstitut f{\"u}r {\"o}ffentliche Verwaltung}, address = {Speyer}, organization = {Deutsches Forschungsinstitut f{\"u}r {\"o}ffentliche Verwaltung Speyer}, isbn = {978-3-941738-23-2}, publisher = {Universit{\"a}t Potsdam}, pages = {51 -- 67}, year = {2016}, language = {en} } @article{OpitzWuennemannAichneretal.2012, author = {Opitz, Stephan and W{\"u}nnemann, Bernd and Aichner, Bernhard and Dietze, Elisabeth and Hartmann, Kai and Herzschuh, Ulrike and IJmker, Janneke and Lehmkuhl, Frank and Li, Shijie and Mischke, Steffen and Plotzki, Anna and Stauch, Georg and Diekmann, Bernhard}, title = {Late Glacial and Holocene development of Lake Donggi Cona, north-eastern Tibetan Plateau, inferred from sedimentological analysis}, series = {Palaeogeography, palaeoclimatology, palaeoecology : an international journal for the geo-sciences}, volume = {337}, journal = {Palaeogeography, palaeoclimatology, palaeoecology : an international journal for the geo-sciences}, number = {23}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0031-0182}, doi = {10.1016/j.palaeo.2012.04.013}, pages = {159 -- 176}, year = {2012}, abstract = {Sediments of Lake Donggi Cona on the northeastern Tibetan Plateau were studied to infer changes in the lacustrine depositional environment, related to climatic and non-climatic changes during the last 19 kyr. The lake today fills a 30x8 km big and 95 m deep tectonic basin, associated with the Kunlun Fault. The study was conducted on a sediment-core transect through the lake basin, in order to gain a complete picture of spatio-temporal environmental change. The recovered sediments are partly finely laminated and are composed of calcareous muds with variable amounts of carbonate micrite, organic matter, detrital silt and clay. On the basis of sedimentological, geochemical, and mineralogical data up to five lithological units (LU) can be distinguished that document distinct stages in the development of the lake system. The onset of the lowermost LU with lacustrine muds above basal sands indicates that lake level was at least 39 m below the present level and started to rise after 19 ka, possibly in response to regional deglaciation. At this time, the lacustrine environment was characterized by detrital sediment influx and the deposition of siliciclastic sediment. In two sediment cores, upward grain-size coarsening documents a lake-level fall after 13 cal ka BP, possibly associated with the late-glacial Younger Dryas stadial. From 11.5 to 4.3 cal ka BP, grain-size fining in sediment cores from the profundal coring sites and the onset of lacustrine deposition at a litoral core site (2 m water depth) in a recent marginal bay of Donggi Cona document lake-level rise during the early to mid-Holocene to at least modern level. In addition, high biological productivity and pronounced precipitation of carbonate micrites are consistent with warm and moist climate conditions related to an enhanced influence of summer monsoon. At 4.3 cal ka BP the lake system shifted from an aragonite- to a calcite-dominated system, indicating a change towards a fully open hydrological lake system. The younger clay-rich sediments are moreover non-laminated and lack any diagenetic sulphides, pointing to fully ventilated conditions, and the prevailing absence of lake stratification. This turning point in lake history could imply either a threshold response to insolation-forced climate cooling or a response to a non-climatic trigger, such as an erosional event or a tectonic pulse that induced a strong earthquake, which is difficult to decide from our data base.}, language = {en} } @article{JagtianiWellek2022, author = {Jagtiani, Sharinee L. and Wellek, Sophia}, title = {In the Shadow of Ukraine}, series = {Survival}, volume = {64}, journal = {Survival}, number = {3}, publisher = {Routledge, Taylor \& Francis Group}, address = {Abingdon}, issn = {126962024X}, doi = {10.1080/00396338.2022.2078045}, pages = {29 -- 48}, year = {2022}, abstract = {In 2022, India captured global attention over its response to the war in Ukraine. While calling for both parties' return to diplomacy, India abstained from several United Nations resolutions condemning Russian aggression. For a country that ostensibly subscribes to the values of democracy and territorial integrity, its response appeared frustrating and contradictory, but it is broadly consistent with its long-standing policy of non-alignment. Although India's relationship with China is increasingly contentious, New Delhi is not yet fully convinced that it is in India's interest to swing westwards. The country's relations with Russia and China are deep, complex and substantive. In addition to the military and economic benefits it derives from its connection with Russia, New Delhi and Moscow share an avowed preference for a more equal, multipolar world. India will eventually have to reflect on the extent to which it can sustain its balancing act.}, language = {en} } @misc{Kiraly2013, author = {Kiraly, Attila}, title = {Hoher Besuch : Xi Jinping in Russland}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-66669}, year = {2013}, abstract = {Wenn ein neuer Mann (das gilt auch f{\"u}r entsprechende Frauen) an die Spitze des Staates oder der Regierung tritt, macht er Besuche im Ausland. Allerdings hatte schon der chinesische Philosoph Laotse im 6. Jahrhundert v. u. Z. festgestellt: „Auch der l{\"a}ngste Marsch beginnt mit dem ersten Schritt." Es gibt immer nur einen ersten Schritt, bereits der zweite ist nicht mehr der erste. So kann auch ein Staatsoberhaupt nur einen ersten Auslandsbesuch machen.}, language = {de} } @phdthesis{Schimpf2020, author = {Schimpf, Stefan}, title = {Herkunft und Ablagerungsmilieu quart{\"a}rer Sedimente im Einzugsgebiet des Heihe, NW China}, school = {Universit{\"a}t Potsdam}, pages = {xi, 186}, year = {2020}, abstract = {Der zentralasiatische Naturraum, wie er sich uns heute pr{\"a}sentiert, ist das Ergebnis eines Zusammenwirkens vieler verschiedener Faktoren {\"u}ber Jahrmillionen hinweg. Im aktuellen Kontext des Klimawandels zeigt sich jedoch, wie stark sich Stofffl{\"u}sse auch kurzfristig {\"a}ndern und dabei das Gesicht der Landschaft verwandeln k{\"o}nnen. Die Gobi-W{\"u}ste in der Inneren Mongolei (China), als Teil der gleichnamigen Trockenregionen Nordwestchinas, ist aufgrund der Ausgestaltung ihrer landschaftspr{\"a}genden Elemente sowie ihrer Landschaftsdynamik, im Zusammenhang mit der Lage zum Tibet-Plateau, in den Fokus der klimageschichtlichen Grundlagenforschung ger{\"u}ckt. Als großes Langzeitarchiv unterschiedlichster fluvialer, lakustriner und {\"a}olischer Sedimente stellt sie eine bedeutende Lokalit{\"a}t zur Rekonstruktion von lokalen und regionalen Stofffl{\"u}ssen dar.. Andererseits ist die Gobi-W{\"u}ste zugleich auch eine bedeutende Quelle f{\"u}r den {\"u}berregionalen Staubtransport, da sie aufgrund der klimatischen Bedingungen insbesondere der Erosion durch Ausblasung preisgegeben wird. Vor diesem Hintergrund erfolgten zwischen 2011 und 2014, im Rahmen des BMBF-Verbundprogramms WTZ Zentralasien - Monsundynamik \& Geo{\"o}kosysteme (F{\"o}rderkennzeichen 03G0814), mehrere deutsch-chinesische Expeditionen in das Ejina-Becken (Innere Mongolei) und das Qilian Shan-Vorland. Im Zuge dieser Expeditionen wurden f{\"u}r eine Bestimmung potenzieller Sedimentquellen erstmals zahlreiche Oberfl{\"a}chenproben aus dem gesamten Einzugsgebiet des Heihe (schwarzer Fluss) gesammelt. Zudem wurden mit zwei Bohrungen im inneren des Ejina-Beckens, erg{\"a}nzende Sedimentbohrkerne zum bestehenden Bohrkern D100 (siehe W{\"u}nnemann (2005)) abgeteuft, um weit reichende, erg{\"a}nzende Informationen zur Landschaftsgeschichte und zum {\"u}berregionalen Sedimenttransfer zu erhalten. Gegenstand und Ziel der vorliegenden Doktorarbeit ist die sedimentologisch-mineralogische Charakterisierung des Untersuchungsgebietes in Bezug auf potenzielle Sedimentquellen und Stofffl{\"u}sse des Ejina-Beckens sowie die Rekonstruktion der Ablagerungsgeschichte eines dort erbohrten, 19m langen Sedimentbohrkerns (GN100). Schwerpunkt ist hierbei die Kl{\"a}rung der Sedimentherkunft innerhalb des Bohrkerns sowie die Ausweisung von Herkunftssignalen und m{\"o}glichen Sedimentquellen bzw. Sedimenttransportpfaden. Die methodische Herangehensweise basiert auf einem Multi-Proxy-Ansatz zur Charakterisierung der klastischen Sedimentfazies anhand von Gel{\"a}ndebeobachtungen, lithologisch-granulometrischen und mineralogisch-geochemischen Analysen sowie statistischen Verfahren. F{\"u}r die mineralogischen Untersuchungen der Sedimente wurde eine neue, rasterelektronenmikroskopische Methode zur automatisierten Partikelanalyse genutzt und den traditionellen Methoden gegen{\"u}bergestellt. Die synoptische Betrachtung der granulometrischen, geochemischen und mineralogischen Befunde der Oberfl{\"a}chensedimente ergibt f{\"u}r das Untersuchungsgebiet ein logisches Kaskadenmodell mit immer wiederkehrenden Prozessbereichen und {\"a}hnlichen Prozesssignalen. Die umfangreichen granulometrischen Analysen deuten dabei auf abnehmende Korngr{\"o}ßen mit zunehmender Entfernung vom Qilian Shan hin und erm{\"o}glichen die Identifizierung von vier texturellen Signalen: den fluvialen Sanden, den D{\"u}nensanden, den Stillwassersedimenten und St{\"a}uben. Diese Ergebnisse k{\"o}nnen als Interpretationsgrundlage f{\"u}r die Korngr{\"o}ßenanalysen des Bohrkerns genutzt werden. Somit ist es m{\"o}glich, die Ablagerungsgeschichte der Bohrkernsedimente zu rekonstruieren und in Verbindung mit eigenen und literaturbasierten Datierungen in einen Gesamtkontext einzuh{\"a}ngen. F{\"u}r das Untersuchungsgebiet werden somit vier Ablagerungsphasen ausgewiesen, die bis in die Zeit des letzten glazialen Maximums (LGM) zur{\"u}ckreichen. W{\"a}hrend dieser Ablagerungsphasen kam es im Zuge unterschiedlicher Aktivit{\"a}ts- und Stabilit{\"a}tsphasen zu einer kontinuierlichen Progradation und {\"U}berpr{\"a}gung des Schwemmf{\"a}chers. Eine besonders aktive Phase kann zwischen 8 ka und 4 ka BP festgestellt werden, w{\"a}hrend der es aufgrund zunehmender fluvialer Aktivit{\"a}ten zu einer deutlich verst{\"a}rkten Schwemmf{\"a}cherdynamik gekommen zu sein scheint. In den Abschnitten davor und danach waren es vor allem {\"a}olische Prozesse, die zu einer {\"U}berpr{\"a}gung des Schwemmf{\"a}chers gef{\"u}hrt haben. Hinsichtlich der mineralogischen Herkunftssignale gibt es eine große Variabilit{\"a}t. Dies spiegelt die enorme Heterogenit{\"a}t der Geologie des Untersuchungsgebietes wider, wodurch die r{\"a}umlichen Signale nicht sehr stark ausgepr{\"a}gt sind. Dennoch, k{\"o}nnen f{\"u}r das Einzugsgebiet drei gr{\"o}ßere Bereiche deklariert werden, die als Herkunftsgebiet in Frage kommen. Das {\"o}stliche Qilian Shan Vorland zeichnet sich dabei durch deutlich h{\"o}here Chloritgehalte als prim{\"a}re Quelle f{\"u}r die Sedimente im Ejina-Becken aus. Sie unterscheiden sich insbesondere durch stark divergierende Chloritgehalte in der Tonmineral- und Gesamtmineralfraktion, was das {\"o}stliche Qilian Shan Vorland als prim{\"a}re Quelle f{\"u}r die Sedimente im Ejina-Becken auszeichnet. Dies steht in Zusammenhang mit den Gr{\"u}nschiefern, Ophioliten und Serpentiniten in diesem Bereich. Geochemisch deutet vor allem das Cr/Rb-Verh{\"a}ltnis eine große Variabilit{\"a}t innerhalb des Einzugsgebietes an. Auch hier ist es das {\"o}stliche Vorland, welches aufgrund seines hohen Anteils an mafischen Gesteinen reich an Chromiten und Spinellen ist und sich somit vom restlichen Untersuchungsgebiet abhebt. Die zeitliche aber auch die generelle Variabilit{\"a}t der Sedimentherkunft l{\"a}sst sich in den Bohrkernsedimenten nicht so deutlich nachzeichnen. Die mineralogisch-sedimentologischen Eigenschaften der erbohrten klastischen Sedimente zeugen zwar von zwischenzeitlichen {\"A}nderungen bei der Sedimentherkunft, diese sind jedoch nicht so deutlich ausgepr{\"a}gt, wie es die Quellsignale in den Oberfl{\"a}chensedimenten vermuten lassen. Ein Grund daf{\"u}r scheint die starke Vermischung unterschiedlichster Sedimente w{\"a}hrend des Transportes zu sein. Die Kombination der Korngr{\"o}ßenergebnisse mit den Befunden der Gesamt- und Schwermineralogie deuten darauf hin, dass es zwischenzeitlich eine Phase mit {\"u}berwiegend {\"a}olischen Prozessen gegeben hat, die mit einem Sedimenteintrag aus dem westlichen Bei Shan in Verbindung stehen. Neben der Zunahme ultrastabiler Schwerminerale wie Zirkon und Granat und der Abnahme opaker Schwerminerale, weisen vor allem die heutigen Verh{\"a}ltnisse darauf hin. Der Vergleich der traditionellen Schwermineralanalyse mit der Computer-Controlled-Scanning-Electron-Microscopy (kurz: CCSEM), die eine automatisierte Partikelauswertung der Proben erm{\"o}glicht, zeigt den deutlichen Vorteil der modernen Analysemethode. Neben einem zeitlichen Vorteil, den man durch die automatisierte Abarbeitung der vorbereiteten Proben erlangen kann, steht vor allem die deutlich gr{\"o}ßere statistische Signifikanz des Ergebnisses im Vordergrund. Zudem k{\"o}nnen mit dieser Methode auch chemische Variet{\"a}ten einiger Schwerminerale bestimmt werden, die eine noch feinere Klassifizierung und sicherere Aussagen zu einer m{\"o}glichen Sedimentherkunft erm{\"o}glichen. Damit ergeben sich außerdem verbesserte Aussagen zu Zusammensetzungen und Entstehungsprozessen der abgelagerten Sedimente. Die Studie verdeutlicht, dass die Sedimentherkunft innerhalb des Untersuchungsgebietes sowie die ablaufenden Prozesse zum Teil stark von lokalen Gegebenheiten abh{\"a}ngen. Die Heterogenit{\"a}t der Geologie und die Gr{\"o}ße des Einzugsgebietes sowie die daraus resultierende Komplexit{\"a}t der Sedimentgenese, machen exakte Zuordnungen zu klar definierten Sedimentquellen sehr schwer. Dennoch zeigen die Ergebnisse, dass die Sedimentzufuhr in das Ejina-Becken in erster Linie durch fluviale klastische Sedimente des Heihe aus dem Qilian Shan erfolgt sein muss. Die Untersuchungsergebnisse zeigen jedoch ebenso die Notwendigkeit einer erg{\"a}nzenden Bearbeitung angrenzender Untersuchungsgebiete, wie beispielsweise den Gobi-Altai im Norden oder den Beishan im Westen, sowie die Verdichtung der Oberfl{\"a}chenbeprobung zur feineren Aufl{\"o}sung von lokalen Sedimentquellen.}, language = {de} } @phdthesis{Kunkel2023, author = {Kunkel, Stefanie}, title = {Green industry through industry 4.0? Expected and observed effects of digitalisation in industry for environmental sustainability}, doi = {10.25932/publishup-61395}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613954}, school = {Universit{\"a}t Potsdam}, pages = {vii, 168}, year = {2023}, abstract = {Digitalisation in industry - also called "Industry 4.0" - is seen by numerous actors as an opportunity to reduce the environmental impact of the industrial sector. The scientific assessments of the effects of digitalisation in industry on environmental sustainability, however, are ambivalent. This cumulative dissertation uses three empirical studies to examine the expected and observed effects of digitalisation in industry on environmental sustainability. The aim of this dissertation is to identify opportunities and risks of digitalisation at different system levels and to derive options for action in politics and industry for a more sustainable design of digitalisation in industry. I use an interdisciplinary, socio-technical approach and look at selected countries of the Global South (Study 1) and the example of China (all studies). In the first study (section 2, joint work with Marcel Matthess), I use qualitative content analysis to examine digital and industrial policies from seven different countries in Africa and Asia for expectations regarding the impact of digitalisation on sustainability and compare these with the potentials of digitalisation for sustainability in the respective country contexts. The analysis reveals that the documents express a wide range of vague expectations that relate more to positive indirect impacts of information and communication technology (ICT) use, such as improved energy efficiency and resource management, and less to negative direct impacts of ICT, such as electricity consumption through ICT. In the second study (section 3, joint work with Marcel Matthess, Grischa Beier and Bing Xue), I conduct and analyse interviews with 18 industry representatives of the electronics industry from Europe, Japan and China on digitalisation measures in supply chains using qualitative content analysis. I find that while there are positive expectations regarding the effects of digital technologies on supply chain sustainability, their actual use and observable effects are still limited. Interview partners can only provide few examples from their own companies which show that sustainability goals have already been pursued through digitalisation of the supply chain or where sustainability effects, such as resource savings, have been demonstrably achieved. In the third study (section 4, joint work with Peter Neuh{\"a}usler, Melissa Dachrodt and Marcel Matthess), I conduct an econometric panel data analysis. I examine the relationship between the degree of Industry 4.0, energy consumption and energy intensity in ten manufacturing sectors in China between 2006 and 2019. The results suggest that overall, there is no significant relationship between the degree of Industry 4.0 and energy consumption or energy intensity in manufacturing sectors in China. However, differences can be found in subgroups of sectors. I find a negative correlation of Industry 4.0 and energy intensity in highly digitalised sectors, indicating an efficiency-enhancing effect of Industry 4.0 in these sectors. On the other hand, there is a positive correlation of Industry 4.0 and energy consumption for sectors with low energy consumption, which could be explained by the fact that digitalisation, such as the automation of previously mainly labour-intensive sectors, requires energy and also induces growth effects. In the discussion section (section 6) of this dissertation, I use the classification scheme of the three levels macro, meso and micro, as well as of direct and indirect environmental effects to classify the empirical observations into opportunities and risks, for example, with regard to the probability of rebound effects of digitalisation at the three levels. I link the investigated actor perspectives (policy makers, industry representatives), statistical data and additional literature across the system levels and consider political economy aspects to suggest fields of action for more sustainable (digitalised) industries. The dissertation thus makes two overarching contributions to the academic and societal discourse. First, my three empirical studies expand the limited state of research at the interface between digitalisation in industry and sustainability, especially by considering selected countries in the Global South and the example of China. Secondly, exploring the topic through data and methods from different disciplinary contexts and taking a socio-technical point of view, enables an analysis of (path) dependencies, uncertainties, and interactions in the socio-technical system across different system levels, which have often not been sufficiently considered in previous studies. The dissertation thus aims to create a scientifically and practically relevant knowledge basis for a value-guided, sustainability-oriented design of digitalisation in industry.}, language = {en} } @misc{HelmutScholz2012, author = {Helmut Scholz,}, title = {Gemeinsam springen : zum j{\"u}ngsten Gipfel der EU und China}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-63290}, year = {2012}, abstract = {Mediale Aufregung wie selten, aber auch intensive Gespr{\"a}che und Verhandlungen {\"u}ber Investitionsabkommen. So k{\"o}nnte man knapp das j{\"u}ngste Treffen zwischen der Europ{\"a}ischen Union und der Volksrepublik China Ende September dieses Jahres umreißen. Es gab sehr kritische Worte vom chinesischen Premier Wen Jiabao an die Adresse der EU. Peking kritisierte die Nichtanerkennung als Marktwirtschaft, das Waffenembargo und die Behinderung des Zugangs zum EU-Markt. Br{\"u}ssel hielt entgegen: Nichteinhaltung individueller Menschenrechte, Raubbau an der Natur und die Tatsache, dass geistiges Eigentum nicht gesch{\"u}tzt ist. Neben der Kritik offerierte China eine erste Skizze f{\"u}r ein Handels- und Partnerschaftsabkommens, dass den Beziehungen eine wahrhaft strategische Perspektive geben kann. Der j{\"u}ngste EU-China-Gipfel zeigte (erneut) das zwiesp{\"a}ltige Verh{\"a}ltnis zwischen den „strategischen Partnern".}, language = {de} }