【摘要】 基于黔桂岩溶山区1990、2015年的土地利用数据和社会经济统计资料,利用典范对应分析方法对1990-2015年25年间的土地利用变化及社会经济驱动因素进行了实证分析。结论如下:(1)黔桂岩溶山区土地利用变化存在明显的时空分异现象;(2)贵州高原区以草地大幅减少和林地增加为主要特征;黔桂峰丛洼地区以水域面积增加和草地减少为主要特征;广西丘陵区的主要特征是耕地减少和建设用地增加。(3)贵州高原区土地利用类型变化以经济和人口因素为主要驱动力;广西丘陵区土地利用类型变化以经济因素和农业结构水平为主要驱动力;农业因素对黔桂峰丛洼地区的土地利用变化驱动作用明显。未来应提高贵州高原和黔桂峰丛洼地区岩溶山区草地生态功能重要性的认识,在加强森林植被恢复的同时加强草地资源保护;城镇化发展背景下黔桂岩溶山区应减少优质耕地占用,开发低丘缓坡土地,建设山地特色城市。更多还原

【Abstract】 This paper is based on data of land use and economic and social statistics of karst mountainous areas in Guizhou and Guangxi in 1990 and 2015. A demonstration analysis is conducted to land-use changes and economic and social driving factors during the period from 1990 to 2015. Results show that there are obvious spatial and temporal variations in land-use changes in the study area.(2) The Guizhou plateau area is characterized by the decrease of grassland and the increase of forest land. The peak cluster areas in Guizhou and Gangxi are featured by the increase of water area and the decrease of grassland; The main features of the Guangxi hilly areas are the reduction of cultivated land and the increase of construction land.(3) The land-use change in the Guizhou Plateau is mainly driven by economic and demographic factors; the economic factors of land use change and the level of agricultural structure in the Guangxi hilly area. The agricultural factors have a significant driving effect on land use change in the peak cluster areas. In the future, the importance of ecological function of grassland in karst mountainous areas of the Guizhou plateau and the peak cluster areas should be raised, and the protection of grassland resources should be strengthened while the restoration of forest vegetation should be strengthened. Under the background of urbanization development, these karst mountain areas should reduce the occupation of high-quality cultivated land, develop the land of low hills and gentle slopes, and build characteristic cities in mountainous areas.更多还原