广东省汕尾市土壤侵蚀动态变化分析  

Analysis on Dynamic Change of Soil Erosion in Shanwei City,Guangdong Province

作　　者：黄明 HUANG Ming(Guangdong Hydropower Planning & Design Institute Co., Ltd, Guangzhou 510635, China)

机构地区：[1]广东省水利电力勘测设计研究院有限公司,广东广州510635

出　　处：《广东水利水电》2021年第5期94-98,共5页Guangdong Water Resources and Hydropower

摘　　要：基于通用土壤流失方程(USLE)计算并结合卫星遥感图像数据信息提取、目视解译等方法,研究了汕尾市2018年土壤侵蚀现状,并对比2006年、2012年、2013年普查结果,分析土壤侵蚀动态变化。结果表明:汕尾市土壤侵蚀面积461.25 km2,以自然侵蚀为主,占侵蚀总面积的75.04%,人为侵蚀占侵蚀总面积24.96%。自然侵蚀以轻度侵蚀为主,占总侵蚀面积的52.86%;人为侵蚀以火烧迹地为主,占总侵蚀面积的9.65%。汕尾市各区县的自然侵蚀以轻度侵蚀为主,人为侵蚀以火烧迹地为主。汕尾市2018年土壤侵蚀总面积比2006年、2012年、2013年,侵蚀面积分别减少141 km2、248.56 km2、120.06 km2,土壤侵蚀呈减少趋势。研究成果可为研究汕尾市土壤侵蚀特点、引发的因素及其发展规律提供依据。Based on the calculation of the Universal Soil Loss Equation(USLE),combined with the methods of extracting satellite remote sensing image data and visual interpretation,the current situation of soil erosion in Shanwei City in 2018 was studied,and the results of the census in 2006,2012,and 2013 were compared to analyze the soil Dynamic changes in erosion.The results show that the soil erosion area of Shanwei City is 461.25 km2,mainly natural erosion,accounting for 75.04%of the total erosion area,and human erosion accounting for 24.96%of the total erosion area.Natural erosion is dominated by light erosion,accounting for 52.86%of the total erosion area;man-made erosion is dominated by fire burned areas,accounting for 9.65%of the total erosion area.The total area of soil erosion in Shanwei City in 2018 was 141 km2,248.56 km2,and 120.06 km2 less than those in 2006,2012,and 2013,respectively,and soil erosion showed a decreasing trend.The research results can provide a basis for studying the characteristics of soil erosion in Shanwei City,the factors causing it and the law of development.

关 键 词：通用土壤流失方程 汕尾市 土壤侵蚀现状 土壤侵蚀动态变化 

分 类 号：S157.1[农业科学—土壤学]