2013~2018年广东省陆河县土壤侵蚀动态变化分析  

Analysis on the Dynamic Changes of Soil Erosion in Luhe County of Guangdong Province from Year 2013 to 2018

作　　者：黄明 胡利强 唐磊 Huang Ming;Hu Liqian;Tang Lei(Guandong Hydropower Planning & Design Institute Co. Ltd., Guangzhou Municipality 510635, P. R. 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：《亚热带水土保持》2021年第3期1-4,15,共5页Subtropical Soil and Water Conservation

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,研究了陆河县2018年土壤侵蚀现状,并对比2013年普查结果,分析土壤侵蚀动态变化。结果表明:①陆河县总侵蚀面积82.51km2,其中自然侵蚀面积43.83km2,占总侵蚀面积的53.12%,自然侵蚀以轻度侵蚀为主,面积为32.80km2,占总侵蚀面积的39.75%;人为侵蚀面积38.68km2,占总侵蚀面积的46.88%,人为侵蚀以火烧迹地为主,面积为15.60km2,占总侵蚀面积的18.91%。②陆河县2013年遥感普查土壤侵蚀面积为85.77km2,2018年土壤侵蚀面积比2013年减少3.26 km2,自然侵蚀面积减少了3.92km2,人为侵蚀面积增加了0.66km2,陆河县土壤侵蚀总体呈减少趋势。研究成果可为研究陆河县土壤侵蚀特点、引发的因素及其发展规律提供依据。It was studied the current situation of soil erosion in Luhe County in 2018 based on the calculation of the Universal Soil Loss Equation(USLE)combing with the methods of extracting satellite remote sensing image data and visual interpretation.Then it was compared with the results of the 2013 census so as to analyze the dynamic changes of soil erosion.The results show that,①the total erosion area of Luhe County is 82.51km2,including 43.83km2 natural erosion area and 38.68km2 man-made erosion area,accounting for 53.12%and 46.88%of the total erosion area respectively.Of which,the natural erosion is dominated by mild erosion with an area of 32.80km2,accounting for 39.75%of the total erosion area;while the man-made erosion is dominated by fire-burned area with an area of 15.60 km2,accounting for 18.91%of the total erosion area;②the soil erosion area of Luhe County in 2013 was 85.77km2.Compared with the areas in 2013,the soil erosion area in 2018 is decreased by 3.26 km2.Of which,the natural erosion area is decreased by 3.92 km2,while the man-made erosion area is increased by 0.66km2.The trend of soil erosion in Luhe County is decreasing generally.The results can provide the basis for study of the characteristics,the initiating factors and the law of development of soil erosion in Luhe County.

关 键 词：通用土壤流失方程 陆河县 土壤侵蚀现状 动态变化分析 

分 类 号：S157.1[农业科学—土壤学]