摘要
柴达木盆地北缘地处我国西北干旱半干旱地区,为研究区内冰川、湖泊对气候变化的响应,利用遥感地物信息提取技术与GIS空间分析技术,提取了近25 a来该地区的卫星遥感影象研究柴达木盆地北缘冰川、湖泊的演变特征。研究结果表明:大柴旦湖面积稳定;小柴旦湖面积动态变化大,在2000年以后面积扩大约60%,而冰雪覆盖面积急剧减少,威胁今后该区域生态环境的安全。
The North Qaidam Basin is located in the arid and semi-arid regions in northwest China. In order to study the response of the glacier and lakes in north Qaidam Basin to the climate change,satellite imagines of the area in recent 25 years are abstracted by using the technologies of remote topographic feature abstract and GIS spatial analysis,and the evolution characteristics of the glacier and lakes are analyzed. The analysis results show that the bigger Qaidam lake is stable while the area of smaller Qaidam lake changed a lot,which has enlarged by 60% after 2000; the area of the glacier shrieked rapidly after 2000,which threatened the future ecological safety.
出处
《人民长江》
北大核心
2015年第7期64-66,91,共4页
Yangtze River
基金
国家地质调查项目"青海重要能源基地水文地质环境地质调查"(G201505)
关键词
遥感动态监测
生态环境演变
气候变化
柴达木盆地
remote sensing dynamic monitoring
ecology evolution
climate change
Qaidam Basin
