基于景观生态学的宁都县LUCC研究及驱动力分析

Research and Driving Force Analysis of LUCC in Ningdu County based on Landscape Ecology

基于3S技术和景观生态学理论,以江西省宁都县为研究对象,利用ENVI/GIS手段对2009年10月10日与2016年11月3日的两幅Landsat TM遥感影像进行地物分类时空对比,并以此来分析宁都县经济、生态发展方式的变化。通过LUCC图幅显示和矩阵结果分析,得出以下结论:耕地、林地和建筑用地景观之间的大量转移是宁都县LUCC的主要特征,具体表现为大量农田转向建筑用地和林草地,而水域和农田为林草地面积的增加做了巨大贡献,未利用土地面积占比总体较少,但面积稍有增加。变化发生的根本原因是社会经济的发展,主要驱动力是人类活动,包括国家政策,人口增多,城市扩张等因素。

Based on 3S technology and landscape ecology theory, this paper takes Ningdu County of Jiangxi Province as the research object, and uses ENVI/GIS method to compare two Landsat TM remote sensing images on October 10, 2009 and November 3, 2016, and analyzes the changes of economic and ecological development mode in Ningdu County. Through LUCC map display and matrix results analysis, the following conclusions are drawn: The major feature of LUCC in Ningdu County is the massive transfer of farmland, woodland and building land landscape, which is specifically manifested as a large number of farmland to building land and forest and grassland, while water and farmland make a great contribution to the increase of forest and grassland area, and the unused land occupies a small proportion, but the area increases slightly. The fundamental cause of change is the development of social economy, and the main driving force is human activities, including national policies,population increase, urban expansion and other factors.