京津风沙源治理水利建设项目区土壤侵蚀敏感性评价

Evaluation on Sensitivity of Soil Erosion in Water Conservancy Construction Project Area of Beijing-Tianjin Sandstorm Source Control

以平泉市2018年京津风沙源治理二期工程水利建设项目小流域综合治理工程为背景,在水土流失日益严重情势的基础上,采用Arc GIS软件及《生态功能区划技术暂行规程》中所规定的土壤侵蚀敏感性指数计算方法,采用降雨侵蚀力、地形变化度、土壤类型、植被类型等指标构建起项目区土壤侵蚀敏感性评价指标体系,并对项目区土壤侵蚀敏感性进行定量分析和评价,深入分析项目区土壤侵蚀敏感性空间分布及原因,并提出切实可行的水土保持优化对策。

This article is based on the comprehensive treatment of small watersheds of the second-phase water conservancy construction project of the Beijing-Tianjin sandstorm source treatment project in Pingquan City in 2018.On the basis of the increasingly serious situation of soil erosion,the soil erosion sensitivity index calculation method specified in the ArcGIS software and the"Interim Regulations for Ecological Function Zoning Technology"is adopted.The index system of soil erosion sensitivity evaluation in the project area is constructed using indicators such as rainfall erosivity,topographic change degree,soil type,vegetation type and so on.And quantitatively analyze and evaluate the soil erosion sensitivity in the project area.In-depth analysis of the spatial distribution and causes of soil erosion sensitivity in the project area,and put forward practical and feasible water and soil conservation optimization countermeasures.