塔里木盆地绿洲与沙质荒漠演化遥感研究  

Remote Sensing Research on Oasis and Sandy Desertification in Tarim Basin

作　　者：吕俊娥[1] 

机构地区：[1]中国煤炭地质总局航测遥感局,陕西西安710199

出　　处：《地理空间信息》2018年第8期60-63,共4页Geospatial Information

基　　金：中国地质调查局地调资助项目(12120114090701)

摘　　要：以叶城地区为例,采用1975、2000、2007年和2014年遥感数据作为数据源,应用"3S"技术,分析了绿洲化及沙质荒漠化的空间特征及重心迁移趋势。结果表明:(1)近40 a间,绿洲面积从1975年的977.76 km^2增加到2014年的1 170.85 km^2;沙质荒漠化面积从1975年的444.12 km^2减少到2007年的325.85 km^2,到2014年再增加到463.69 km^2。(2)绿洲退缩区面积25.46 km^2,扩张区的面积218.41 km^2,绿洲存在着一定的扩张趋势;沙质荒漠化退缩区面积209.61 km^2,扩张区面积266.63 km^2,沙质荒漠化基本稳定且有较小的扩张。(3)绿洲重心向东南方向迁移1.632 1 km,同时,沙质荒漠化先向东北再向西南迁移9.499 3 km。近40 a间叶城地区绿洲扩张,沙质荒漠化先退缩后扩张。Taking Yecheng Area for example, using the remote sensing data in 1975, 2000, 2007 and 2014, we used 3 S technologies to analyze the spatial characteristics and trend of the oasis and sandy desertification. The results show that(1) the past 40 years, the oasis area increases from 977.76 km^2 to 1 170.85 km^2, and the sandy desertification area decreases from 444.12 km^2 in 1975 to325.85 km^2 in 2007, and increases to 463.69 km^2 in 2014.(2) Oasis retreat total area is 25.46 km^2, the expansion area is 218.41 km^2, there are some oasis expansion trends, and sandy desertification retreat total area is 209.61 km^2, the expansion area is 266.63 km^2, sandy desertification has a more stable small expansion.(3) The focus of oasis migrate to southeast 1.632 1 km, while the sandy desertification migrate to northeast and migrate southwest again 9.499 3 km.

关 键 词：绿洲化 沙质荒漠化 时空演化 遥感研究 

分 类 号：P237[天文地球—摄影测量与遥感]