Research on the Changes of Resources and Environment around Beijing Area Using 3S Technology

摘要

In order to investigate the past 10 years changes of resources and entironment in this area, a special research was carried out mainly based on 3S(GIS, RS, GPS) technology. Through analyzing, we can draw this conclusion that because China government began to implement the policy of returning some farmland into woodland and grassland in 1996, the status of resources and entironment around Beijing area is becoming more and more optimistic in the following years. Farmland reduced distinctly in 10 years, yet accordingly both woodland and grassland increased evidently. What's more, entironment degradation is mainly influenced by Mt. Dahinggan Ling-Yinshan Mountain terrain.