近30年来安固里淖湖面监测与变化分析  

Dynamic Monitoring on Water Level of Angulinao Lake and the Causes of Its Drying up

作　　者：赵玉灵[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083

出　　处：《地球信息科学》2009年第3期312-318,共7页Geo-information Science

基　　金：地质大调查项目:"中国东部重要经济区带基础地质环境遥感调查与监测"(1212010510706)

摘　　要：应用MSS、TM、ETM和CBERS-2遥感数据和G IS技术对安固里淖湖,近30年来水体分布变化进行调查与监测,结果是调查区安固里淖湖面积,在30年来变化比较大。1975～2007年间,水域面积逐年萎缩,并在2004年秋干涸;2005年短暂的蓄水后,2006年、2007年又再度干涸;而其上游水库的水域面积在30年间变化不大。综合分析认为,安固里淖湖干涸有三个主要原因：（1）降水量逐年减少和气温逐年增高;（2）安固里淖湖上游过多水库的修建和蓄水;（3）地下水超采。Angulinao Lake is located in Zhangbei County, Hebei Province. It is the largest lake formed by continental rivers in Haihe basin. The lake covered up to 18 000 hm^2 when it was the largest. And it was getting eompletely dry in recent years. Based on MSS ／ TM ／ ETM ／ CBERS-1 ／ CBERS-2 remote sensing data and GIS Technology; this paper studied the evolution of the water level of Angulinao Lake from 1975 to 2007. The results showed that the surface area of Angulinao Lake changed greatly, while the upriver reserviors changed little. The surface area of the lake is about 4300hm^2 in 1975, changed to about 5100hm^2 in 2000, and then reduced the scope every year. These changes corresponded well to the climate changes in northern China and to the changes of upriver discharge capacity during the same period. Dry climate and the weak period of the upriver discharge capacity responds to the period of small surface area; while damp climate and the strong period of the upriver discharge capacity corresponds to large surface area. The study also showed that the Eco-environment has degraded in recent years. The salinized area had increased about 170km^2 from 1977 to 1987, and increased about 120km^2 from 1987 to 2007. These changes corresponded well to the surface area changes of Angulinao Lake. The causes resulting in drying up of the Angulinao Lake have been studied. The geological factors, such as faults, strata, earthquake, have no influences on it. The main reasons are climate change and human＇s activities, such as the excessive interception of upriver reserviors and over extraction for groundwater. Dry climate and lower upriver discharge capacity are the killers of the Angulinao Lake. To keep balance between economic development and environmental protection, there is a long way to go.

关 键 词：遥感动态监测 GIS 安固里淖湖 

分 类 号：P343.3[天文地球—水文科学] P237[天文地球—地球物理学]