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[1]ZHANG Wei-jiang,SUN Bao-ping,GUO Wen-feng,et al.Approach to the Sediments Prediction Model of Check Dam in Loess Hilly-gully Area[J].Research of Soil and Water Conservation,2002,9(01):107-111.

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Approach to the Sediments Prediction Model of Check Dam in Loess Hilly-gully Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 9 Number of periods: 2002年01期 Page number: 107-111 Column: Public date: 1900-01-01

Title:: Approach to the Sediments Prediction Model of Check Dam in Loess Hilly-gully Area

Author(s):: ZHANG Wei-jiang¹, SUN Bao-ping¹, GUO Wen-feng², LI Ya-jun³; 1. Resource and Environment College of Beijing Forestry University, Beijing 100083, China;
2. Soil and Water conservation Bureau of Ningxia, Yinchuan 750001, Ningxia Autonomous Region, China

Keywords:: small watershed check dam; soil erosion; loess hilly gully area; amount of sediments

CLC:: S17

DOI:: -

Abstract:: Sediments of check dam in small watersheds in loess hilly gully area come from three proportion, i.e., soil erosion on the sloping area, gully erosion and bank breakdown around the reservoir. Amounts of soil erosion on slope could be calculated on the basis of the data of plot experiment in the same area,and the sediments induced from bank breakdown could be calculated out by comparing the original and current landform of the bank. Through surveying the sediments of the check dam, the sediments from gully erosion would be the difference between total amounts and parts from slope erosion and bank breakdown. According to the prediction models established firstly between the slope erosion amounts, gully erosion amounts and their corresponding predictors such as rainfall, land use and topographic features of the small watershed, a model for predicting the total sediments of check dam could be derived with a precision of 79% at least.

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Last Update: 1900-01-01