青藏高原湖泊与气候变化的GRA空间响应  

Variation of lakes in Qinghai-Tibet Plateau and its spatial response to climatic change based on Grey relational analysis

作　　者：邢宇[1,2] 孙永军[1] 李文庆[3] 李瑜[1] 付长亮[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083 [2]中国科学院生态环境研究中心,北京100085 [3]中国电建集团北京勘测设计研究院有限公司,北京100024

出　　处：《干旱区资源与环境》2017年第3期158-163,共6页Journal of Arid Land Resources and Environment

基　　金：中国地质调查局项目(DD20160077);中国科学院科技服务网络计划项目(KFJ-EW-STS-021-03)资助

摘　　要：利用地形图、MSS、TM、ETM和CBERS数据以及青藏高原气温和降水数据,通过人机交互目视解译获取5期湖泊水体信息,时间跨度37年左右;然后,根据年份分别生成5期遥感数据的时相分布图,以此图层再分别控制生成全区的气温、降水差值镶嵌的变化图;最后,基于Arc GIS软件对湖泊和气候变化进行基于像元的灰色关联度计算,并按流域单元对其进行统计。结果表明:在青藏高原2006年左右,面积大于0.1km2的湖泊有45693.37km2,整体先减少1190.52km2,1990年后持续增加了6429.18km2,37年净增加了5238.66km2;在青藏高原北、西、南边缘地带的大多地区气温升高对湖泊增加的影响比降水大,在青藏高原腹部地区降水对湖泊变化的关联度较高。Based on remote sensing data of topographic map, MSS, TM, ETM and CBERS, temperature and precipitation data of Qinghai - Tibet, the lakes information data of five periods were acquired by human - computer interaction visual interpretation in the past 37 years. The phase distribution of five periods of the remote sensing data were taken as the control layer, the temperature mosaic difference images and the precipitation mosaic difference images were generated. The Grey relational analysis（GRA） between lakes change and climate change were calculated based on pixel by using ArcGIS software, and the GRA of watershed unit were counted. The re- sults show that the total lake area in Tibetan Plateau was 45693.37kin2, in the early period lakes decreased 1190.52km~, the lako area increased 6429. 18kin2 after 1990, and the lake area of net increase was 5238. 66km2, Precipitation and temperature played more important role in lake increase in north, west and south margins of Qinghai - Tibet Plateau. The Grey relational degree between precipitation and lake change were relatively high in the central of Qinghai- Tibet Plateau.

关 键 词：湖泊变化 灰色关联分析(GRA) 空间响应 青藏高原 遥感 地理信息系统 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]