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[1]TANG Zheng-hong,CAI Qiang-guo,XU Feng,et al.Study on the GIS-based Simulation of Erosion Control for Agroforestry[J].Research of Soil and Water Conservation,2001,8(04):170-174.

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Study on the GIS-based Simulation of Erosion Control for Agroforestry

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 8 Number of periods: 2001年04期 Page number: 170-174 Column: Public date: 1900-01-01

Title:: Study on the GIS-based Simulation of Erosion Control for Agroforestry

Author(s):: TANG Zheng-hong¹, CAI Qiang-guo¹, XU Feng², WANG Zhong-ke³, WU Shu-an¹; 1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
2. Monitoring Center of Soil and Water Conservation, Ministry of Water Resources, Beijing, China;
3. Experimental Station of Soil and Water Conservation in Zhangjiakuo, Hebei Province, China

Keywords:: Northwest of Hebei Province; agroforestry; hedgerow-crops system; conflux networks

CLC:: S157.4;TP79

DOI:: -

Abstract:: Based on the data of Guojialiang test site, soil erosion and sediment yield models and erosion control models of the hedgerow were established. The study produced water and sediment transport networks of the catchment from digital elevation model (DEM) and brought them to the models. The combination of GIS and models simulated the influence of upper-runoff to the lower-slope and the spatial process of runoff and sediment transport in a catchment. The result of the simulation from 1995 to 1999 showed that cultivated slope land, bare slope land and natural grass land with low vegetative cover have the highest erosion modulus in Qingbiankohe catchment, and they are the important regions for erosion control. Authors simulated the system of the hedgerow-crops in these regions whose area only has 18.2% of the whole catchment. The results show that the control effect for runoff is between 8% and 46% and the control effect for sediment is between 42% and 50%. The simulation results of nutrient loss shows that the loss of organic matter is severe on current conditions. However, it is an effective method to control the nutrient loss on the condition of hedgerow-crops system.

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Last Update: 1900-01-01