西藏纳木错湖泊面积变化对气候变化的响应  

Response of Namtso Lake Area Change to Climate Change in Tibet

作　　者：德吉央宗[1,2] 强巴欧珠 白玛央宗 曾林 DEJI Yangzong;QIANGBA Ouzhu;BAIMA Yangzong;ZENG Lin(Lhasa Branch, Chengdu Institute of Meteorology, China Meteorological Administration,Lhasa Tibet 850001;Climate Center of the Tibet Autonomous Region,Lhasa Tibet 850001;Tibet Linzhi City Meteorological Bureau,Linzhi Tibet 860000)

机构地区：[1]中国气象局成都高原气象研究所拉萨分部,西藏拉萨850001 [2]西藏自治区气候中心,西藏拉萨850001 [3]西藏林芝市气象局,西藏林芝860000

出　　处：《河南科技》2019年第10期133-136,共4页Henan Science and Technology

基　　金：西藏自治区重点科技计划项目(XZ201703-GA-01);国家自然科学基金项目(41665002、41165003、41561017);西藏自治区气象局高原遥感技术应用创新团队联合资助

摘　　要：本文根据1975年地形图、多源卫星数据以及气象资料分析纳木错湖面面积、湖面高度变化。结果表明,1975—2017年,纳木错湖面面积总体扩张了64.68km^2,扩张率为3.32%。2003—2009年,纳木错湖泊面积和湖面高度均呈现增长和上升趋势,湖泊面积增长了17.2km2、湖面高度上升了1.2m。综合分析表明,纳木错流域近47年来气温升高,降水量增加;同时暖季降水量的增加,补给了湖泊水量,而蒸发量减少也抑制了湖水的蒸发。这些要素的变化对纳木错湖泊面积的扩张具有较大影响。Based on the topographic map, multi-source satellite data and meteorological data of 1975, this paper ana. lyzed the change of lake area and lake height in namuchou. The results showed that from 1975 to 2017, the total area of the lake in Namco expanded by 64.68km2, with an expansion rate of 3.32%. From 2003 to 2009, the lake area and lake height of Namcuo showed an increasing trend. The lake area increased by 17.2km2 and the lake height increased by 1.2m. The comprehensive analysis showed that the temperature of Namcuo basin had increased and the precipita. tion had increased in the past 47 years. At the same time, the increase in precipitation in the warm season restores the amount of water in the lake, and the decrease in evaporation also inhibits the evaporation of the lake. The changes of these factors are helpful to the expansion of the lake area of Namtso.

关 键 词：纳木错 湖面变化 湖面高度 气候变化 

分 类 号：P343.3[天文地球—水文科学]