基于3s技术的2000年以来贵州省林地资源动态变化分析

Analysis of the change of forest resources in Guizhou since 2000 based on 3s technology

林地作为陆地上最大的生态系统,是地球表面一种重要的植被类型,对维持全球生态平衡具有不可替代的作用。选取Landsat TM/ETM卫星影像数据,利用面向对象分类方法提取出贵州省2000、2008以及2015年三期林地资源数据,分析其在空间和时间上的变化规律。

As the largest land-based ecosystem,forest is an important vegetation type on the surface of the Earth,and plays an irreplaceable role in the maintenance of the global ecological balance. In this paper,based on the Landsat TM / ETM satellite image data,we used object-oriented method to extract three periods of forest resource data（ 2000,2008,2015）,and analyzed its change rules in space and in time.