Risk Assessment and Change Monitoring of Soil and Water Loss in Ruijin City Based on RS and GIS

作     者：Zhou Peng Wang Li Xie Wanting Lu Jiangyue Zhang Xiaoxu Xu Wei 

作者机构：School of Civil Engineering and ArchitectureWuhan Institute of Technology School of Statistics and MathematicsZhongnan University of Economics and Law 

出 版 物：《Meteorological and Environmental Research》 (气象与环境研究（英文版）)

年 卷 期：2018年第9卷第4期

页      面：89-93页

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082802[工学-农业水土工程] 090707[农学-水土保持与荒漠化防治] 0907[农学-林学] 07[理学] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程] 0713[理学-生态学] 

基　　金：Supported by Scientific Research Foundation of Wuhan Institute of Technology(16QD24) 

主　　题：Land use Change monitoring Soil and water loss Soil and water conservation 

摘      要：The land use information extraction technology for the high-resolution remote sensing images of the Gaofen No. 1 satellite was construc-ted. According to the spectral, band, texture and shape attributes, land use types were divided, and the changing laws of land use types were ana- lyzed. Aftewards,according to the Table of Grading Standard of Sooil Erosion Intensity（SL190-96）,as well as vegetation coverage index NDVI slope, the risks of soil and water loss were assessed. Meanwhile, the level, scale, location and scope of changes in the risks of soil and water loss were monitored by using spatial visualization and spatial statistical techniques. The results showed that the area of areas without soil erosion and moderate soil erosion areas decreased obviously from 2015 to 2017, and the decreases were up to 22.929 3 and 13.626 3 km2 respectively. The ar-ea of mild soil erosion areas increased fast, and the increase reached 31.140 0 km2. The area of extremely strong soil erosion areas increased by 7.267 4 km2. In the city, moderate and strong soil erosion areas reduced, while extremely strong soil erosion patches increased fast, which was mainly related to road construction and construction and development of orchards. The extremely strong soil erosion areas were distributed in the shape of a banded loop, surrounded the suburbs of the city, and shrank towards the center of Ruijin City. The constructed technology to monitor the changes in land use and soil and water loss, as well as the changing laws of land use and soil and water loss provide the theoretical basis and plan-ning basis of soil and water conservation for urban planning departments and soil and water conservation departments.