摘要
依据祁连山西段党河山区气象台站的气温、降水和出山口水文站的径流等观测数据,分析1960-2010年51a来党河出山径流量的变化特征、趋势及其对气候变化的响应.结果表明:近51a来,党河山区气候转暖湿明显,气温上升,降水量增加、冰川消融增加.受山区气候变化影响,出山径流量总体亦呈增长趋势.从径流的补给来源与季节水量变化上讲,与主要受降水影响的河西走廊中、东部的黑河、石羊河水系不同,由于党河河源分布的冰川面积较多、个体较大,冰川融水受气温变化的影响更甚于降水.预计在未来几十年内,山区气候继续受向暖湿转化的影响,党河出山径流量呈持续增长的可能性较大.
In this paper,the characteristics,variation and respond to climate change of the runoff in the mountain area of the Danghe River basin in the past more than 50 years are analyzed based on the observation of runoff,precipitation and air temperature at correlative hydrometric station and weather station in the study area.The results show that climate has changed a lot,that is,air temperature has risen and precipitation has increased,the climate has become more wet and warm in the mountain area of the Danghe River basin.Because of the effect of mountain climate change,the mountain runoff of the Danghe River has also increased as a whole in the past more than 50 years.Different from some other rivers in the east and middle parts of the Hexi Corridor,such as Heihe River,shiyanghe River and so on,which are supplied by more rainfall,the mountain runoff of the Danghe River is mainly controlled by air temperature,because there are more glaciers meltwater supply,and then controlled by precipitation in the mountain area.It is expected that the mountain runoff may continue to increase,because the possibility of temperature rise and precipitation increase will be large in the future 50 a.
出处
《冰川冻土》
CSCD
北大核心
2011年第6期1259-1267,共9页
Journal of Glaciology and Geocryology
基金
中国科学院寒区旱区环境与工程研究所内陆河流域生态水文院重点实验室开放基金
中国科学院知识创新重要方向项目(KZCX1-YW-328)资助
关键词
气候变化
祁连山区
出山径流
全球变暖
党河流域
climate change
Qilian Mountains
runoff from mountain area
global warming
Danghe River basin
