Soil erosion spatial distribution character of sloping field in the Sichuan Hilly Basin: Taking a cultivated slope in Neijiang as example

Zheng Jiniun, Qi Yongging, Hua Lizhong, He Xiubin and Zhang Xinbao

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Abstract

137Cs nuclear tracing technique was used to estimate rates of soil redistribution on a sloping field with traditional erosion control measures located near Shangqiao Village, Neijiang City, in the Sichuan Hilly Basin of China. The downslope changes of137Cs inventory and its corresponding soil erosion rates in the sloping field show a rolling trend and have two peak values in two inflexions of the sloping field, these result reflects that the changes of microphysiognomy play a key role on the spatial soil redistribution of the sloping field.

Key words  the Sichuan Hilly Basin -  137Cs - soil erosion rates - micro-physiognomy

CLC number  S 157

Foundation item: Supported by the National Basic Research Program of China (973 Program, G2003CB415201) (2003CB415201), the National Natural Science Foundation of China (40271015) and the International Atomic Energy Agency (12322/RO).
Biography: ZHENG Jinjun (1978-), male, Ph. D. candidate, research direction: soil and water conservation and 3S integration.

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