基于RS、GIS的松嫩沙地土地利用变化研究——以吉林省前郭县为例

土地利用变化是自然与人文因素综合作用的结果。在较短时间尺度上,社会经济因素是土地利用变化的主要驱动力。本文以吉林省前郭尔罗斯县为例,运用1987年和1996年TM影像及相关统计数据,采用空间分析、统计分析和遥感信息与空间化非遥感信息集成等方法,研究了10a来该县土地利用变化过程及其社会经济驱动机制。结果表明,近10a来,耕地面积明显增加,林地、牧草地面积减少,其它土地利用类型面积变化不大,农业产值、牧业产值、农业人口数和粮食产量是该县土地利用变化的主要社会经济驱动力.

STUDY ON LAND USE CHANGE OF SONGNEN SANDY PLAIN BASED ON RS AND GIS

Land use change is a result of complex interaction between natural factor and various human work, and soc_economic factor are the important drive force in short term. The study area is Qianguo county of Jilin province lies in northeast of China. To discuss the progress of land use change and the soc_economic driving mechanism of these changes since 10 years in study area, we analyze TM image of 1987 and 1996, and related statistic data by using spatial analysis, statistic analysis and the method integrated image data with vector data. The result shows that farmland area increased significantly while forest and grassland area decreased, and others changed a little. The main driving forces lead to these changes are agriculture production, breeding production, agriculture population and food production.