内蒙古阿拉善盟生态环境“3S”技术定量动态分析

“3S” Technology quantitative dynamic analysis of ecological environment in alxa league,inner mongolia

20 0 2年,应用RS、GIS高新技术,对全盟生态环境现状进行1 996年、2 0 0 0年、2 0 0 2年度定量动态对比监测,选择2 0 0 0、2 0 0 2年美国七号卫星ETM数据、1 996年美国五号卫星TM数据为新、旧时相,采用计算机影像融合、动态监测、监督分类等遥感技术,对全盟前后7年间生态环境现状进行遥感定量获取,在1 32个外业遥感样区的验证下,获得了阿拉善盟遥感动态监测数据,建立了生态环境现状本底数据库。在“海量”的GIS数据库支持下,实现了全盟生态环境定量动态分析。本文着重介绍全盟生态环境定量动态分析成果。

In 2002,using RS and GIS,we completed quantitative dynamic contrastive monitor of entironment up-to-date state of whole Alxa league in 1996,2000 and 2002.Choosing the United States Landsat 7 ETM data in 2000 and 2003 and Landsat 5 satellite TM data in 1996 as current and past aspection and using the Remote Sensing technique including image resolution merge、dynamic monitor、supervised classification etc,we quantificationally acquired the entironment up-to-date state of Alxa league within 7 years.By validating 132 outside samples,acquired dynamic monitor data and established understratum database of the entironment of Alxa league.Supportted by the “sea quantity” GIS database,we carried out quantitative dynamic analyzing of entironment of the whole Alxa league.This paper introduces the quantitative dynamic analyzing result of the entironment of Alxa league.