基于RS/GIS的新疆察布查尔县绿洲动态变化研究

Study on the change of Qapqal county oasis in Xinjiang based on RS/GIS

以察布查尔县绿洲1975年和2005年2个不同时期的遥感影像(MSS和SPOT)为数据源,利用ARCGIS和ERDAS软件对其进行配准、解译和分类处理,以人机交互的方式对其进行分类得出分类图和绿洲转移矩阵。对比分析察布查尔县绿洲30多年来的动态变化,对其动态度进行分析并进一步探讨绿洲变化驱动机制。结果表明,1975～2005年30年间,察布查尔县绿洲在外观特征和分布上均有显著变化,面积也有明显扩张,尤其是人工绿洲增长极为显著。但是,察布查尔县绿洲面积扩大的同时原有的自然生态平衡也被打破。荒漠化和绿洲化的冲突加剧等一系列生态环境问题不容忽视。

This paper discusses the dynamic changes of the Qapqal oasis over a 30 year period by using 2 periods of remote sensing imagery：Mss （1975）and SPOT （2005）. Remote sensing data were interpreted and classified using ARCGIS and ERDAS software and we obtain classification map and land use conversion matrix by human-machine interaction classification. At last,we obtain the dynamic changes of Qapqal oasis and find out the mason of drive which cause the dynamic changes. The result shows that the appearance characters and distribute area of Qapqal oasis has changed greatly, the oasis area has also enlarged. Especially the artifical oasis changed much more obviously than before. But with the expansion of Qapqal oasis,it also be confronted with some ecological and environmental problems at the same time. We shouldn＇t neglect the problem of ecosystem environment such as the balance of primary nature and the confliction between desertification and the oasis.