摘要
在全球气候变暖的背景下,通过对洪湖湿地区域5个气象站点1960年～2008年年平均气温、年降水量、年蒸发量的实测数据的分析,研究了其气候变化特征.结果表明:近50年以来,洪湖湿地区域升温的趋势显著且存在不对称性,气温倾向率为0.31℃/10a;年降水量有微弱增加趋势,但降水强度增加,洪湖区域年雨量的增加主要是因为强降水天气的增多;而干旱指数上升,加剧了洪湖湿地旱季缺水涝季洪水的局面;人类活动的影响进一步加速了这种趋势.
In the context of global warming, This paper analyzes the characteristics of climate change in Honghu lake wetland by means of a large number of practical measure data from five meteorological stations in this area, such as temperature, annual precipitation and evaporation from 1961 to 2008. The results show that： in the last 50 years, the warming trend is remarkable, with the rate of 0.31 ℃/10a,and there is significant asymmetry. While there is a slight increasing trend in precipitation. The increase in annual rainfall in Honghu region mainly due to the increase in heavy precipitation. The drought index rose. This results in the spring drought and summer flood more serious. Human factors have intensified this trend in a certain degree.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第2期304-307,共4页
Journal of Central China Normal University：Natural Sciences
基金
国家自然科学基金项目(40871251)
中国气象局气候变化专项(CCSF-10-04)
中国科学院知识创新工程重要方向项目(kzcx2-yw-141)
关键词
洪湖
气候变化
回归分析
气候倾向率
Honghu Lake
climate change
regression analysis
climate trend rate
