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Methodological Framework for a Multi-Scale Study on Hydrological Processes and Soil Erosion in Subtropical Southeast China

查看全文 作　　者：H. [1]ZEPP;TANG Jia-[2]Liang;ZHANG [2]Bin 高影响力作者 机构地区：[1]Geographical Institute, Ruhr-University Bochum, D-44780 Bochum, (Germany);[2]Institute of Soil Science, Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China)高影响力机构 出　　处：《Pedosphere》索引2005年第15卷第6期,共12页高影响力期刊 基　　金：Project supported by the German Research Foundation (DFG) (No. ZE 254/4), the National Natural Science Foundationof China (No. 40071044), and the Chinese Academy of Sciences (No. KZCX2-413-5) 摘　　要：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. 关 键 词：水文学 土壤侵蚀 中国 西南地区 地质生态 水土流失
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