基于RS/GIS岩溶区的土地利用/覆被变化及驱动力分析:以贵州省息烽县为例

为喀斯特地区土地资源的合理开发利用提供科学依据,以促进喀斯特地区生态环境和经济的可持续发展,以贵州省息烽县为研究对象,利用遥感(RS)与地理信息系统(GIS)技术获得2000—2015年土地利用/覆被的现状、动态度、土地利用/覆被类型转移矩阵等数据,结合经济、人口等统计数据进行土地利用/覆被变化及驱动力分析。结果表明:2000—2015年,息烽县草地、建设用地和林地面积保持持续上升,耕地和裸岩地面积持续下降,水域和园地面积先减少后略有增加,且转移面积一直很小;耕地主要转向建设用地、草地和林地,裸岩地转向草地;息烽县土地利用/覆被变化强度处于中等水平。人口增长、城镇化、经济发展和政策的共同推动作用是研究区土地利用/覆被变化的主导因素。提出了喀斯特地区土地可持续发展的建议。

Research of Land Use/Land Cover Change and Driving Force Factors Based on RS/GIS in Karst Area:A case study of Xifeng County in Guizhou Province

In order to provide scientific basis for reasonable exploitation and utilization of land resources and promote the sustainable development of ecological environment and economy in Karst area of Guizhou,taking Xifeng County as the study area,remote sensing (RS) and geographic information system (GIS) technology were employed to obtain the data of 2000-2015 land use/cover status,dynamic degree and land use / cover type transfer matrix,then,the driving force of land use / cover change were analyzed combined with economic and population statistical data.Results:From 2000 to 2015,grassland,construction land and forest land area kept rising,the area of cultivated land and bare rock continued to decline,water and the garden area first decreased and then increased slightly,and the transfer area was very small all the time;Arable land was mainly converted to construction land,grass land and forest land,then bare rock land was converted to grassland;the intensity of land use/cover change was in the middle level in the study area.Population growth and urbanization,economic development and policy were the dominant factors of land use / cover change in Xifeng County.At last some suggestions on sustainable development of land in Karst area were put forward.