摘要
长时间序列的土地调查与监测能为社会可持续发展提供有效的数据支撑。基于大英县地区的Landsat系列影像,从土地利用面积变化、动态变化幅度、动态度和转移矩阵4个方面对2002-2017年土地利用时空变化情况进行了分析。结果表明:(1)15 a间大英县耕地面积减少,建设用地和林地面积呈逐期增加趋势,水域面积先减后增,其他用地面积先增后减;(2)耕地面积变化幅度为负值,面积缩减率先增后减,林地和建设用地面积变化幅度为正值,面积增长率先增后减,动态度变化较剧烈的是耕地和林地,建设用地动态度先增后减,直至平稳;(3)大英县土地利用转移类型以耕地向建设用地和林地转移、林地和耕地相互转移为主。研究成果可为大英县资源集约节约利用和土地资源可持续发展提供参考。
Long-term land survey and monitoring can provide effective data support for social sustainable development.Based on the Landsat images in Daying County,we analyzed the spatio-temporal changes of land use from 2002 to 2017 from four aspects,including land use area change,dynamic change range,dynamic degree and transfer matrix.The results show that(1)the area of cultivated land in Daying County decreased during the 15 years,while the areas of construction land and forest land showed a gradual increase trend.The water area decreased at first and then increased,and other land areas increased at first and then decreased.(2)The change range of cultivated land area was negative.The area reduction rate increased at first and then decreased.The area change ranges of forest land and construction land are positive,and the area growth rate increased at first and then decreased.Cultivated land and woodland were the main areas where the dynamic degree changed drastically,and the dynamic degree of construction land increased at first and then decreased to stable.(3)The land use conversion types in Daying County were mainly the transfer from cultivated land to construction land and forest land,and the mutual transfer between forest land and cultivated land.The research results can provide references for the intensive and economical utilization of resources and sustainable development of land resources in Daying County.
出处
《地理空间信息》
2022年第1期56-60,65,I0002,I0003,共8页
Geospatial Information
基金
自然资源部测绘科学与地理空间信息技术重点实验室开放基金资助项目(2020-1-3)
西南科技大学城市学院科研资助项目(2020XJXM03)。
