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| Soil erosion modelling and scenario analysis for the small catchment in the purple hilly masses of Sichuan basin |
| Chen Yibing1,Lin Chaowen1,Huang Jingjing1,Ing.J.Stolte2, Dr.J.Reijnders2 |
1.Soil and Fertilizer Institute,Sichuan Academy of Agricultural Sciences,Chengdu,610066,China;2.Department of soil and land use,Alterra Green
world research,Wageningen 6708 PB,The Netherlands |
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Abstract This study was carried out within the framework of the EroChiNut project.The objective of this study is to carry out scenario analysis based on alternative land use and construction of a susceptibility matrix,the effect of land use and slope on erosion.First scenario analyses were carried out to get more insight in the effect of land use on erosion.The results of these scenarios were used to define alternative land use for further analyses.At last a tillage direction was defined for all cultivated land to study the effect of tillage direction on erosion using LISEM.A susceptibility matrix was constructed,what gives the average soil loss under different kinds of land use and slope.This was done for 23 crops and 10 different slope angles.This matrix can be used for defining alternative land use.The matrix can also used for up-scaling to a larger area.
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Received: 09 March 2005
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