Throughfall in the terra firme forest of Western Amazonia

  • Throughfall measurements were made under primary terra firme rainforest in the Rio Pichis valley, in the Upper Amazon Basin of Peru. Based on 214 precipitation events over nearly 18 months, throughfall was estimated to be 83.1±8.8% of gross precipitation. Regression analysis of all events revealed that gross precipitation is the only significant explanatory variable; the use of one-burst events does not significantly improve the regression relationship. Gross precipitation is, however, a poor predictor of throughfall for small rainfall events. The two forest structure parameters, canopy capacity, S, and free throughfall coefficient, p, were determined to be 1.3±0.2 mm and 0.32±0.18 mm. Rainfall intensity was found to influence these parameters. New methods which attempt to minimize the influence of meteorologic variables are used to estimate the potential values of these canopy parameters.

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Author:Helmut Elsenbeer, Keith Cassel, L. Zuñiga
Series (Serial Number):Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (paper 049)
Document Type:Postprint
Year of Completion:1994
Publishing Institution:Universität Potsdam
Release Date:2008/03/28
Source:Journal of Hydrology. - 32 (1994), 2, p. 30 - 44. - ISSN 0022-1694
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geoökologie
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften
Licence (German):License LogoKeine Nutzungslizenz vergeben - es gilt das deutsche Urheberrecht
Notes extern:
first published in:
Journal of Hydrology - 32 (1994), 2, p. 30 - 44
ISSN: 0022-1694