摘要
长江干流区在我国经济发展中有举足轻重的地位，是我国东西经济联系的纽带和桥梁。气候变化是当今气象界讨论的重要课题，其对全球日益紧张的水资源影响已引起各国政府、学者的关注。以重庆、万县、汉口、宜昌、贵池五站为代表，通过长江干流区近８０年观测资料和每站对应的气温、降水资料，分析了气候变化对长江干流区径流量的影响。以分组频率法找出了各站的枯水年、平水年、丰水年。丰枯水年降水量距平百分率分别为２２．６％～３０．８％及－２２．１％～－２９．４％，径流量为６．４～９．６％及－２．７～－７．０％。
Areas in which the trunk stream of Changjing River flows have important position in economic development of China.The effects of climatic change on the flow in the trunk stream of Changjiang River in these areas were analysed based on climatic and hydrorographic data of Chongqing,Wanxian,Hankou,Yichang and Guiqi stations High,normal and low water years were identified for each station in terms of frequency distribution.Anormalous percentage of annual precipitation was +22.6%～+30.8% in high water year and -22.1%～-29.4% in low water year,while the anormalous percentage of flow was +6.4%～9.6% and -2.7%～-7.9% respectively.
出处
《长江流域资源与环境》
CAS
CSCD
1998年第4期337-340,共4页
Resources and Environment in the Yangtze Basin
基金
南京气象学院科研基金
关键词
长江干流区
气候变化
径流量
气候模式
水资源
climatic change,flow,climate model,trund stream of Changjiang River
