@article{GoetzKohrsParraHormazabaletal.2021,
  author    = {Goetz, Jason and Kohrs, Robin and Parra Hormaz{\´a}bal, Eric and Bustos Morales, Manuel and Araneda Riquelme, Mar{\´i}a Bel{\´e}n and Henr{\´i}quez Ruiz, Cristian and Brenning, Alexander},
  title     = {Optimizing and validating the Gravitational Process Path model for regional debris-flow runout modelling},
  series = {Natural hazards and earth system sciences : NHESS / European Geophysical Society},
  volume    = {21},
  journal   = {Natural hazards and earth system sciences : NHESS / European Geophysical Society},
  number    = {8},
  publisher = {European Geophysical Society},
  address   = {Katlenburg-Lindau},
  issn      = {1561-8633},
  doi       = {10.5194/nhess-21-2543-2021},
  pages     = {2543 -- 2562},
  year      = {2021},
  abstract  = {Knowing the source and runout of debris flows can help in planning strategies aimed at mitigating these hazards. Our research in this paper focuses on developing a novel approach for optimizing runout models for regional susceptibility modelling, with a case study in the upper Maipo River basin in the Andes of Santiago, Chile. We propose a two-stage optimization approach for automatically selecting parameters for estimating runout path and distance. This approach optimizes the random-walk and Perla et al.'s (PCM) two-parameter friction model components of the open-source Gravitational Process Path (GPP) modelling framework. To validate model performance, we assess the spatial transferability of the optimized runout model using spatial crossvalidation, including exploring the model's sensitivity to sample size. We also present diagnostic tools for visualizing uncertainties in parameter selection and model performance. Although there was considerable variation in optimal parameters for individual events, we found our runout modelling approach performed well at regional prediction of potential runout areas. We also found that although a relatively small sample size was sufficient to achieve generally good runout modelling performance, larger samples sizes (i.e. >= 80) had higher model performance and lower uncertainties for estimating runout distances at unknown locations. We anticipate that this automated approach using the open-source R software and the System for Automated Geoscientific Analyses geographic information system (SAGA-GIS) will make process-based debris-flow models more readily accessible and thus enable researchers and spatial planners to improve regional-scale hazard assessments.},
  language  = {en}
}
@techreport{DillenardtThieken2021,
  author    = {Dillenardt, Lisa and Thieken, Annegret},
  title     = {Untersuchung der r{\"a}umlichen Verteilung von Bodenk{\"u}hlpotenzialen in Remscheid},
  doi       = {10.25932/publishup-52667},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-526670},
  pages     = {III, 40},
  year      = {2021},
  abstract  = {Eine Zunahme der allgemeinen Temperatur auf Grund des Klimawandels und die damit einhergehende Zunahme von Hitzewellen f{\"u}hrten dazu, dass das Landesamt f{\"u}r Umwelt und Verbraucherschutz Nordrhein-Westfalen (LANUV) einen Leitfaden f{\"u}r den Schutz der positiven Klimafunktion urbaner B{\"o}den herausgab. Darauf aufbauend wurde auf regionaler Ebene f{\"u}r die Stadt D{\"u}sseldorf die K{\"u}hlleistung der urbanen B{\"o}den quantifiziert, um besonders schutzw{\"u}rdige Bereiche zu identifizieren. Im Rahmen des Projektes ExTrass sollte nun die K{\"u}hlleistung urbaner B{\"o}den innerhalb Remscheids quantifiziert werden, jedoch auf Basis von frei zug{\"a}nglichen Daten. Eine solche Datengrundlage schließt eine Modellierung des Bodenwasserhaushaltes, welches die Grundlage der Quantifizierung in D{\"u}sseldorf war, f{\"u}r Remscheid aus. Jedoch bietet der vorgestellte Ansatz die M{\"o}glichkeit, eine solche Untersuchung auch in anderen Gemeinden innerhalb Deutschlands mit relativ wenig Aufwand durchzuf{\"u}hren. Die K{\"u}hlleistung der B{\"o}den wurde {\"u}ber die nutzbare Feldkapazit{\"a}t abgesch{\"a}tzt, welche das Wasserspeichervolumen der obersten durchwurzelten Bodenzone angibt. Es ist der Bodenwasserspeicher, der Wasser f{\"u}r die Evapotranspiration zur Verf{\"u}gung stellt und damit maßgeblich die K{\"u}hlleistung eines Bodens definiert, d.h. durch direkte Evaporation des Bodenwassers sowie durch die Transpiration von Wasser durch Pflanzen. In die Erstellung der Karte sind eingegangen: (a) die Bodenkarte Nordrhein-Westfalens (BK50), um die nutzbare Feldkapazit{\"a}t (nFK) je Fl{\"a}che zu bestimmen; (b) der Landnutzungsdatensatz UrbanAtlas 2012, in Verbindung mit einer Literaturrecherche, um den Einfluss der Landnutzung auf die Werte der nFK, insbesondere im Hinblick auf Versiegelung und Verdichtung herzuleiten; und (c) OpenStreetMap (OSM), um den Anteil der versiegelten Fl{\"a}chen genauer zu bestimmen, als dies auf Basis des UrbanAtlas m{\"o}glich gewesen w{\"a}re. Es hat sich gezeigt, dass dieser Ansatz geeignet ist, um die r{\"a}umliche Verteilung der potenziellen Bodenk{\"u}hlfunktion innerhalb einer Stadt zu untersuchen. Es ist zu beachten, dass der Einfluss des Grundwassers in Remscheid nicht ber{\"u}cksichtigt werden konnte. Denn es ist damit zu rechnen, dass die Grundwasserverh{\"a}ltnisse aufgrund der geologischen und topographischen Situation in Remscheid kleinr{\"a}umig Variationen unterliegen und es somit keinen durchg{\"a}ngigen und kartierten Aquifer gibt. Kleingartenanlagen, Parks und Friedh{\"o}he im innerst{\"a}dtischen Bereich und allgemein die Landnutzungsklassen Wald und Gr{\"u}nland wurden als Fl{\"a}chen mit einem besonders hohem potenziellen Bodenk{\"u}hlpotenzial identifiziert. Solche Fl{\"a}chen sind besonders sch{\"u}tzenswert. Die Analyse der Speicherf{\"u}llst{\"a}nde der oberen Bodenzone, basierend auf der erstellten Karte der potenziellen Bodenk{\"u}hlfunktion und der klimatischen Wasserbilanz, ergab, dass besonders innerst{\"a}dtische Fl{\"a}chen, die einen kleinen Bodenwasserspeicher haben, in einem trockenen Jahr bereits fr{\"u}h im Sommer ihre K{\"u}hlfunktion verlieren und bei Hitzewellen somit eine verringerte positive Klimafunktion haben. Gest{\"u}tzt wird diese Aussage durch eine Auswertung des normalisierten differenzierten Vegetationsindex (NDVI), der genutzt wurde, um die Ver{\"a}nderung der Pflanzenvitalit{\"a}t vor und nach einer Hitzeperiode im Juni/Juli 2018 zu untersuchen. Messungen mit Meteobikes, einer Vorrichtung, die dazu geeignet ist, w{\"a}hrend einer Radfahrt kontinuierlich die Temperatur zu messen, st{\"u}tzen die Erkenntnis, dass innerst{\"a}dtische Gr{\"u}nfl{\"a}chen wie Parks eine positive Wirkung auf das urbane Mikroklima haben. Weiterhin zeigen diese Messungen, dass die Topographie innerhalb des Untersuchungsgebietes die Aufheizung einzelner Fl{\"a}chen und die Temperaturverteilung vermutlich mitbestimmt. Die hier vorgestellte Karte der potenziellen K{\"u}hlfunktion f{\"u}r Remscheid sollte als Erg{\"a}nzung in die Klimafunktionskarte f{\"u}r Remscheid eingehen und den bestehenden Layer „fl{\"a}chenhafte Klimafunktion", der nur die Landnutzung ber{\"u}cksichtigt, ersetzen.},
  language  = {de}
}
@article{MuellerSchuelerZechetal.2022,
  author    = {M{\"u}ller, Sebastian and Sch{\"u}ler, Lennart and Zech, Alraune and Heße, Falk},
  title     = {GSTools v1.3: a toolbox for geostatistical modelling in Python},
  series = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  volume    = {15},
  journal   = {Geoscientific model development : an interactive open access journal of the European Geosciences Union},
  number    = {7},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {1991-959X},
  doi       = {10.5194/gmd-15-3161-2022},
  pages     = {3161 -- 3182},
  year      = {2022},
  abstract  = {Geostatistics as a subfield of statistics accounts for the spatial correlations encountered in many applications of, for example, earth sciences. Valuable information can be extracted from these correlations, also helping to address the often encountered burden of data scarcity. Despite the value of additional data, the use of geostatistics still falls short of its potential. This problem is often connected to the lack of user-friendly software hampering the use and application of geostatistics. We therefore present GSTools, a Python-based software suite for solving a wide range of geostatistical problems. We chose Python due to its unique balance between usability, flexibility, and efficiency and due to its adoption in the scientific community. GSTools provides methods for generating random fields; it can perform kriging, variogram estimation and much more. We demonstrate its abilities by virtue of a series of example applications detailing their use.},
  language  = {en}
}
@article{BauerBoersigPhametal.2022,
  author    = {Bauer, Jonas and B{\"o}rsig, Nicolas and Pham, Van Cam and Hoan, Tran Viet and Nguyen, Ha Thi and Norra, Stefan},
  title     = {Geochemistry and evolution of groundwater resources in the context of salinization and freshening in the southernmost Mekong Delta, Vietnam},
  series = {Journal of Hydrology: Regional Studies},
  volume    = {40},
  journal   = {Journal of Hydrology: Regional Studies},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {2214-5818},
  doi       = {10.1016/j.ejrh.2022.101010},
  pages     = {17},
  year      = {2022},
  abstract  = {Study region: Ca Mau Province (CMP), Mekong Delta (MD), Vietnam. Study focus: Groundwater from deep aquifers is the most reliable source of freshwater in the MD but extensive overexploitation in the last decades led to the drop of hydraulic heads and negative environmental impacts. Therefore, a comprehensive groundwater investigation was conducted to evaluate its composition in the context of Quaternary marine transgression and regression cycles, geochemical processes as well as groundwater extraction. New hydrological insights for the region: The abundance of groundwater of Na-HCO3 type and distinct ion ratios, such as Na+/Cl-, indicate extensive freshwater intrusion in an initially saline hydrogeological system, with decreasing intensity from upper Pleistocene to deeper Miocene aquifers, most likely during the last marine regression phase 60-12 ka BP. Deviations from the conservative mixing line between the two endmembers seawater and freshwater are attributed to ion-exchange processes on mineral surfaces, making ion ratios in combination with a customized water type analysis a useful tool to distinguish between salinization and freshening processes. Elevated salinity in some areas is attributed to HCO3- generation by organic matter decomposition in marine sediments rather than to seawater intrusion. Nevertheless, a few randomly distributed locations show strong evidence of recent salinization in an early stage, which may be caused by the downwards migration of saline Holocene groundwater through natural and anthropogenic pathways into deep aquifers.},
  language  = {en}
}
@article{FaireyTimmermanSudoetal.2019,
  author    = {Fairey, Brenton J. and Timmerman, Martin Jan and Sudo, Masafumi and Tsikos, Harilaos},
  title     = {The role of hydrothermal activity in the formation of Karst-hosted manganese deposits of the Postmasburg Mn Field, Northern Cape Province, South Africa},
  series = {Minerals},
  volume    = {9},
  journal   = {Minerals},
  number    = {7},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {2075-163X},
  doi       = {10.3390/min9070408},
  pages     = {28},
  year      = {2019},
  abstract  = {The Postmasburg Manganese Field (PMF), Northern Cape Province, South Africa, once represented one of the largest sources of manganese ore worldwide. Two belts of manganese ore deposits have been distinguished in the PMF, namely the Western Belt of ferruginous manganese ores and the Eastern Belt of siliceous manganese ores. Prevailing models of ore formation in these two belts invoke karstification of manganese-rich dolomites and residual accumulation of manganese wad which later underwent diagenetic and low-grade metamorphic processes. For the most part, the role of hydrothermal processes and metasomatic alteration towards ore formation has not been adequately discussed. Here we report an abundance of common and some rare Al-, Na-, K- and Ba-bearing minerals, particularly aegirine, albite, microcline, banalsite, serandite-pectolite, paragonite and natrolite in Mn ores of the PMF, indicative of hydrothermal influence. Enrichments in Na, K and/or Ba in the ores are generally on a percentage level for most samples analysed through bulk-rock techniques. The presence of As-rich tokyoite also suggests the presence of As and V in the hydrothermal fluid. The fluid was likely oxidized and alkaline in nature, akin to a mature basinal brine. Various replacement textures, particularly of Na- and K- rich minerals by Ba-bearing phases, suggest sequential deposition of gangue as well as ore-minerals from the hydrothermal fluid, with Ba phases being deposited at a later stage. The stratigraphic variability of the studied ores and their deviation from the strict classification of ferruginous and siliceous ores in the literature, suggests that a re-evaluation of genetic models is warranted. New Ar-Ar ages for K-feldspars suggest a late Neoproterozoic timing for hydrothermal activity. This corroborates previous geochronological evidence for regional hydrothermal activity that affected Mn ores at the PMF but also, possibly, the high-grade Mn ores of the Kalahari Manganese Field to the north. A revised, all-encompassing model for the development of the manganese deposits of the PMF is then proposed, whereby the source of metals is attributed to underlying carbonate rocks beyond the Reivilo Formation of the Campbellrand Subgroup. The main process by which metals are primarily accumulated is attributed to karstification of the dolomitic substrate. The overlying Asbestos Hills Subgroup banded iron formation (BIF) is suggested as a potential source of alkali metals, which also provides a mechanism for leaching of these BIFs to form high-grade residual iron ore deposits.},
  language  = {en}
}
@article{NeugartWiesnerReinholdFredeetal.2018,
  author    = {Neugart, Susanne and Wiesner-Reinhold, Melanie and Frede, Katja and Jander, Elisabeth and Homann, Thomas and Rawel, Harshadrai Manilal and Schreiner, Monika and Baldermann, Susanne},
  title     = {Effect of Solid Biological Waste Compost on the Metabolite Profile of Brassica rapa ssp chinensis},
  series = {Frontiers in plant science : FPLS},
  volume    = {9},
  journal   = {Frontiers in plant science : FPLS},
  publisher = {Frontiers Media},
  address   = {Lausanne},
  issn      = {1664-462X},
  doi       = {10.3389/fpls.2018.00305},
  pages     = {13},
  year      = {2018},
  abstract  = {Large quantities of biological waste are generated at various steps within the food production chain and a great utilization potential for this solid biological waste exists apart from the current main usage for the feedstuff sector. It remains unclear how the usage of biological waste as compost modulates plant metabolites. We investigated the effect of biological waste of the processing of coffee, aronia, and hop added to soil on the plant metabolite profile by means of liquid chromatography in pak choi sprouts. Here we demonstrate that the solid biological waste composts induced specific changes in the metabolite profiles and the changes are depending on the type of the organic residues and its concentration in soil. The targeted analysis of selected plant metabolites, associated with health beneficial properties of the Brassicaceae family, revealed increased concentrations of carotenoids (up to 3.2-fold) and decreased amounts of glucosinolates (up to 4.7-fold) as well as phenolic compounds (up to 1.5-fold).},
  language  = {en}
}
@techreport{BerghaeuserSchoppaUlrichetal.2021,
  author    = {Bergh{\"a}user, Lisa and Schoppa, Lukas and Ulrich, Jana and Dillenardt, Lisa and Jurado, Oscar E. and Passow, Christian and Samprogna Mohor, Guilherme and Seleem, Omar and Petrow, Theresia and Thieken, Annegret},
  title     = {Starkregen in Berlin},
  doi       = {10.25932/publishup-50056},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-500560},
  pages     = {44},
  year      = {2021},
  abstract  = {In den Sommern der Jahre 2017 und 2019 kam es in Berlin an mehreren Orten zu {\"U}berschwemmungen in Folge von Starkregenereignissen. In beiden Jahren f{\"u}hrte dies zu erheblichen Beeintr{\"a}chtigungen im Alltag der Berliner:innen sowie zu hohen Sachsch{\"a}den. Eine interdisziplin{\"a}re Taskforce des DFG-Graduiertenkollegs NatRiskChange untersuchte (1) die meteorologischen Eigenschaften zweier besonders eindr{\"u}cklicher Unwetter, sowie (2) die Vulnerabilit{\"a}t der Berliner Bev{\"o}lkerung gegen{\"u}ber Starkregen. Eine vergleichende meteorologische Rekonstruktion der Starkregenereignisse von 2017 und 2019 ergab deutliche Unterschiede in der Entstehung und den {\"U}berschreitungswahrscheinlichkeiten der beiden Unwetter. So war das Ereignis von 2017 mit einer relativ großen r{\"a}umlichen Ausdehnung und langer Dauer ein untypisches Starkregenereignis, w{\"a}hrend es sich bei dem Unwetter von 2019 um ein typisches, kurzzeitiges Starkregenereignis mit ausgepr{\"a}gter r{\"a}umlicher Heterogenit{\"a}t handelte. Eine anschließende statistische Analyse zeigte, dass das Ereignis von 2017 f{\"u}r l{\"a}ngere Niederschlagsdauern (>=24 h) als großfl{\"a}chiges Extremereignis mit {\"U}berschreitungswahrscheinlichkeiten von unter 1 \% einzuordnen ist (d.h. Wiederkehrperioden >=100 Jahre). Im Jahr 2019 wurden dagegen {\"a}hnliche {\"U}berschreitungswahrscheinlichkeiten nur lokal und f{\"u}r k{\"u}rzere Zeitr{\"a}ume (1-2 h) berechnet. Die Vulnerabilit{\"a}tsanalyse basiert auf einer von April bis Juni 2020 in Berlin durchgef{\"u}hrten Onlinebefragung. Diese richtete sich an Personen, die bereits von vergangenen Starkregenereignissen betroffen waren und thematisierte das Schadensereignis selbst, daraus entstandene Beeintr{\"a}chtigungen und Sch{\"a}den, Risikowahrnehmung sowie Notfall- und Vorsorgemaßnahmen. Die erhobenen Umfragedaten (n=102) beziehen sich vornehmlich auf die Ereignisse von 2017 und 2019 und zeigen, dass die Berliner Bev{\"o}lkerung sowohl im Alltag (z.B. bei der Beschaffung von Lebensmitteln) als auch im eigenen Haushalt (z.B. durch {\"U}berschwemmungssch{\"a}den) von den Unwettern beeintr{\"a}chtigt war. Zudem deuteten die Antworten der Betroffenen auf M{\"o}glichkeiten hin, die Vulnerabilit{\"a}t der Gesellschaft gegen{\"u}ber Starkregen weiter zu reduzieren - etwa durch die Unterst{\"u}tzung besonders betroffener Gruppen (z.B. Pflegende), durch gezielte Informationskampagnen zum Schutz vor Starkregen oder durch die Erh{\"o}hung der Reichweite von Unwetterwarnungen. Eine statistische Analyse zur Effektivit{\"a}t privater Notfall- und Vorsorgemaßnahmen auf Grundlage der Umfragedaten best{\"a}tigte vorherige Studienergebnisse. So gab es Anhaltspunkte daf{\"u}r, dass durch das Umsetzen von Vorsorgemaßnahmen wie beispielsweise das Installieren von R{\"u}ckstauklappen, Barriere-Systemen oder Pumpen Starkregensch{\"a}den reduziert werden k{\"o}nnen. Die Ergebnisse dieses Berichts unterstreichen die Notwendigkeit f{\"u}r ein integriertes Starkregenrisikomanagment, das die Risikokomponenten Gef{\"a}hrdung, Vulnerabilit{\"a}t und Exposition ganzheitlich und auf mehreren Ebenen (z.B. staatlich, kommunal, privat) betrachtet.},
  language  = {de}
}
@article{JobeLiBookhagenetal.2018,
  author    = {Jobe, Jessica Ann Thompson and Li, Tao and Bookhagen, Bodo and Chen, Jie and Burbank, Douglas W.},
  title     = {Dating growth strata and basin fill by combining Al-26/Be-10 burial dating and magnetostratigraphy},
  series = {Lithosphere},
  volume    = {10},
  journal   = {Lithosphere},
  number    = {6},
  publisher = {American Institute of Physics},
  address   = {Boulder},
  issn      = {1941-8264},
  doi       = {10.1130/L727.1},
  pages     = {806 -- 828},
  year      = {2018},
  abstract  = {Cosmogenic burial dating enables dating of coarse-grained, Pliocene-Pleistocene sedimentary units that are typically difficult to date with traditional methods, such as magnetostratigraphy. In the actively deforming western Tarim Basin in NW China, Pliocene-Pleistocene conglomerates were dated at eight sites, integrating Al-26/Be-10 burial dating with previously published magnetostratigraphic sections. These samples were collected from growth strata on the flanks of growing folds and from sedimentary units beneath active faults to place timing constraints on the initiation of deformation of structures within the basin and on shortening rates on active faults. These new basin-fill and growthstrata ages document the late Neogene and Quaternary growth of the Pamir and Tian Shan orogens between >5 and 1 Ma and delineate the eastward propagation of deformation at rates up to 115 km/m.y. and basinward growth of both mountain belts at rates up to 12 km/m.y.},
  language  = {en}
}
@article{PuppeLeueSommeretal.2022,
  author    = {Puppe, Daniel and Leue, Martin and Sommer, Michael and Schaller, J{\"o}rg and Kaczorek, Danuta},
  title     = {Auto-fluorescence in phytoliths},
  series = {Frontiers in Environmental Science},
  volume    = {10},
  journal   = {Frontiers in Environmental Science},
  publisher = {Frontiers Media},
  address   = {Lausanne},
  issn      = {2296-665X},
  doi       = {10.3389/fenvs.2022.915947},
  pages     = {14},
  year      = {2022},
  abstract  = {The detection of auto-fluorescence in phytogenic, hydrated amorphous silica depositions (phytoliths) has been found to be a promising approach to verify if phytoliths were burnt or not, especially in archaeological contexts. However, it is unknown so far at what temperature and how auto-fluorescence is induced in phytoliths. We used fluorescence microscopy, scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDX), and Fourier transform infrared spectroscopy to analyze auto-fluorescence in modern phytoliths extracted from plant samples or in intact leaves of winter wheat. Leaves and extracted phytoliths were heated at different temperatures up to 600 degrees C. The aims of our experiments were i) to find out what temperature is needed to induce auto-fluorescence in phytoliths, ii) to detect temperature-dependent changes in the molecular structure of phytoliths related to auto-fluorescence, and iii) to derive a mechanistic understanding of auto-fluorescence in phytoliths. We found organic compounds associated with phytoliths to cause auto-fluorescence in phytoliths treated at temperatures below approx. 400 degrees C. In phytoliths treated at higher temperatures, i.e., 450 and 600 degrees C, phytolith auto-fluorescence was mainly caused by molecular changes of phytolith silica. Based on our results we propose that auto-fluorescence in phytoliths is caused by clusterization-triggered emissions, which are caused by overlapping electron clouds forming non-conventional chromophores. In phytoliths heated at temperatures above about 400 degrees C dihydroxylation and the formation of siloxanes result in oxygen clusters that serve as non-conventional chromophores in fluorescence events. Furthermore, SEM-EDX analyses revealed that extractable phytoliths were dominated by lumen phytoliths (62\%) compared to cell wall phytoliths (38\%). Our findings might be not only relevant in archaeological phytolith-based examinations, but also for studies on the temperature-dependent release of silicon from phytoliths and the potential of long-term carbon sequestration in phytoliths.},
  language  = {en}
}
@article{SchmidtNendelFunketal.2019,
  author    = {Schmidt, Martin and Nendel, Claas and Funk, Roger and Mitchell, Matthew G. E. and Lischeid, Gunnar},
  title     = {Modeling Yields Response to Shading in the Field-to-Forest Transition Zones in Heterogeneous Landscapes},
  series = {Agriculture},
  volume    = {9},
  journal   = {Agriculture},
  number    = {1},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {2077-0472},
  doi       = {10.3390/agriculture9010006},
  pages     = {15},
  year      = {2019},
  abstract  = {In crop modeling and yield predictions, the heterogeneity of agricultural landscapes is usually not accounted for. This heterogeneity often arises from landscape elements like forests, hedges, or single trees and shrubs that cast shadows. Shading from forested areas or shrubs has effects on transpiration, temperature, and soil moisture, all of which affect the crop yield in the adjacent arable land. Transitional gradients of solar irradiance can be described as a function of the distance to the zero line (edge), the cardinal direction, and the height of trees. The magnitude of yield reduction in transition zones is highly influenced by solar irradiance-a factor that is not yet implemented in crop growth models on a landscape level. We present a spatially explicit model for shading caused by forested areas, in agricultural landscapes. With increasing distance to forest, solar irradiance and yield increase. Our model predicts that the shading effect from the forested areas occurs up to 15 m from the forest edge, for the simulated wheat yields, and up to 30 m, for simulated maize. Moreover, we estimated the spatial extent of transition zones, to calculate the regional yield reduction caused by shading of the forest edges, which amounted to 5\% to 8\% in an exemplary region.},
  language  = {en}
}