广西壮族自治区土地利用变化图谱研究

Mapping Analysis Study on Land Use Change in Guangxi Zhuang Autonomous Region

采用地学信息图谱方法,以广西壮族自治区3期(2005年、2010年和2015年)遥感影像解译数据为基础,运用ArcGIS软件分析了土地利用格局变化图谱特征,揭示广西壮族自治区10 a以来土地利用变化的时空规律。结果表明:在2005～2015年期间,耕地面积呈先减少后增加的趋势,林地面积呈先增加后减少的趋势,草地和水域面积变化量较小,建设用地呈逐年增加趋势,未利用地变化不明显;新增建设用地变化幅度较大的地区主要发生在南宁市、桂林市、柳州市、"钦北防"沿海的城市、贺州市和梧州市;2005～2015年土地利用类型的变化以耕地、草地、林地之间的相互转移为主;草地、水域、建设用地和未利用地以涨势为主,耕地和林地则以落势为主。

Based on the remote sensing image interpretation data of Guangxi Zhuang Autonomous Region （2005, 2010 and 2015）, the characteristics of land use pattern change map were analyzed by using ArcGIS software, and the temporal and spatial regularity of land use change in Guangxi Zhuang Autonomous Region in the past 10 years was revealed. The results showed that during the period of 2005-2015, cultivated land area decreased frst and then increased, forest land area increased frst and then decreased, grassland and water area change was small, construction land was increasing year by year, and the change of unused land was not obvious. The newly-added construction land mainly occurred in Nanning, Guilin, Liuzhou, Qinbeifang coastal cities, Hezhou and Wuzhou. The change of land use types in 2005~2015 was mainly due to the transfer of cultivated land, grassland and woodland. Grassland, water area, construction land and unused land were mainly rising, while cultivated land and forest land were mainly falling.