内蒙古蒙中经济区大城市边缘带LUCC时空过程分析

蒙中经济区是内蒙古自治区唯一自成体系的经济区,自然资源丰富、区位优势显著,不仅是内蒙古的社会经济重心,也是中国北方最具发展潜力和活力的地区之一。文章应用陆地卫星遥感数据,在GIS技术支持下,进行了蒙中经济区大城市边缘带1990—2000年的土地利用/覆盖变化时空动态分析。1990—2000年间呼和浩特和包头市的城市建成区面积分别增长2 512.55ha和2 259.33ha,净增加率分别高达33.00%和23.72%,城市用地的向外扩展,大面积蚕食建成区周边地带耕地和牧草地的同时,一定程度上加剧了城市边缘带耕地和草原的退化过程。研究证明,在包头市边缘带耕地和草原的退化形势极其严峻。

TIME AND SPACE PROCESS ANALYSIS OF LUCC IN THE METROPOLITAN FRINGE OF MID-INNER MONGOLIAN ECONOMIC REGION

Mid-Inner Mongolian economic region is the only one of its own system in Inner Mongolia municipality,it is rich in nature resource and is prominent in area superiority.It is not only the social and economical barycentre in Inner Mongolia,but also one of the most potential and vigorous areas in the north of China.This article conducts the land use/land cover change's time and space dynamic analysis in the metropolitan fringe of the Mid-Inner Mongolian economic region in 1990-2000 by applying landsat remote sensing data,with the support of GIS technology.The size of built-up areas in the city of Huhhot and Baotou increases by 2 512.55 ha and 2 259.33 ha respectively in the year 1990-2000, the net increasing ratio reaches apart 33.00% and 23.72% highly.The city land's extending nibbles plantation and grassland in the periphery belt of built-up areas over a wide area.Meanwhile,it exacerbates further the degeneration process of plantation and grassland in the city fringe to some extent.The research demonstrates plantation and grassland's degeneration phenomenon in the city of Baotou is extremely severe.