Pedosphere 15(6): 695--706, 2005
ISSN 1002-0160/CN 32-1315/P
©2005 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Methodological framework for a multi-scale study on hydrological processes and soil erosion in subtropical southeast China |
H. ZEPP1 , TANG Jia-Liang2 and ZHANG Bin2 |
1 Geographical Institute, Ruhr-University Bochum, D-44780 Bochum, (Germany). E-mail: harald.zepp@rub.de
2 Institute of Soil Science, Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China) |
| ABSTRACT |
| This paper introduces and illustrates the concepts of geoecological process combinations and geographical or landscape dimensions by outlining the methodology of a Sino-German cooperative project in Southeast China and presents the first results of the modelling process for the catchment scale. The project equipped a catchment in subtropical Southeast China from plot scale to catchment scale in order to study the hydrological and soil erosion processes. Distinct spatial differences in principal water and soil material fluxes were quantified. Deep drainage peaks occurred in May, June and July and even in August and November. Measurements in erosion plots as well as sedimentary deposits revealed that there was soil erosion connected with overland flow. Consistent with the results from the regular catenary variations of soil colors, textural stratification and hydrograph analysis, there was also a clear indication of interflow from measured soil moisture data. The experimental set up has the potential to further deepen the understanding of small-scale processes involved in lateral water fluxes and soil erosion. The expected results and interpretations will lead to a further integration of the collected data. In the future, to understand matter transfer in and between landscape ecological units, agricultural influence on nutrient status and flux data will be incorporated. |
| Key Words: catchment, geoecological process combination, landscape ecology, soil erosion |
| Citation: Zepp, H., Tang, J. L. and Zhang, B. 2005. Methodological framework for a multi-scale study on hydrological processes and soil erosion in subtropical southeast China. Pedosphere. 15(6): 695-706. |
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