汾河流域土地利用土地覆被变化分析

Analysis of land use and land cover change in Fenhe River Basin

为解析汾河流域土地利用土地覆被情况及其动态的演变过程,本文采用1980年、2000年、2015年三期土地利用数据,应用土地利用转移矩阵分析方法,构建了汾河流域6种地类的转移矩阵,分析了1980—2015年各地类的总变化量、净变化量及交换变化量。结果表明,汾河流域内占比最大的土地利用类型为耕地,而改革开放以后,随着经济的发展和城市的不断扩张,建设用地面积不断增加,1980—2015年汾河流域建设用地面积增加了495km^(2),主要由耕地转化而来,贡献率为82%。该研究结果可为汾河流域的水土资源科学管理提供一定的数据支撑。

In order to analyze the land use and land cover in Fenhe River Basin and its dynamic evolution process,this paper uses the land use data of 1980,2000 and 2015,and uses the land use transfer matrix analysis method to construct the transfer matrix of six land types in Fenhe River Basin,and analyzes the total change,net change and exchange change of each land type from 1980 to 2015.The results show that the largest land use type in Fenhe River Basin is cultivated land.After the reform and opening up,with the development of economy and the continuous expansion of cities,the construction land area in Fenhe River Basin has increased by 495km^(2) from 1980 to 2015,mainly from cultivated land,with a contribution rate of 82%.The research results can provide some data support for scientific management of water and soil resources in Fenhe River Basin.