气候变暖背景下扎龙湿地气候变化特征  

Characteristics of Climate Change in Zhalong Wetland in Context of Global Warming

作　　者：沃晓棠[1] 孙彦坤[1] 玄明君[1] 王鼎震[1] 刘艳茹[1] 

机构地区：[1]东北农业大学资源与环境学院,哈尔滨150030

出　　处：《气象科技》2011年第1期38-43,共6页Meteorological Science and Technology

基　　金：黑龙江省留学归国人员科学技术专项资金项目(LC07C34)资助

摘　　要：基于扎龙湿地1955—2004年逐日气温和降水量资料,采用滑动平均、趋势分析、小波分析和Mann-Kendall及Yamamoto检验等方法,探讨了扎龙湿地近50年的气候变化特征。结果表明:①研究时段内扎龙湿地年及四季平均气温均呈上升趋势,年平均气温在1988年发生了一次明显的突变,其后气温达到一个更显著的增暖时期,20世纪90年代以来的增温非常显著,是50年以来的最高温期;②扎龙湿地年及各季降水量除春季外均呈减少趋势,秋季降水减少趋势最显著,研究时段内没有明显的突变过程;③20世纪80年代中期之后扎龙湿地暖冬和热夏事件的发生频率和强度显著增加,大气湿润度在减小,气候在向暖干方向发展。By means of the methods of moving average,trend analysis,wavelet transform,Mann-Kendall and Yamamoto tests,the climate change characteristics in the recent 50 years are analyzed based on the precipitation and temperature data of the Zhalong wetland from 1955 to 2004.The main results indicate：（1） Annual mean temperature and seasonal mean temperature appear to be ascending;annual mean temperature had a sudden change in 1988,and since then a warmer period appeared;the period from the 1990s to date is the warmest in recent 50 years.（2） Annual precipitation and seasonal precipitation all show a decreasing trend except in spring,especially remarkable in fall;there was no obvious sudden change during the concerned time period.（3） After 1985,the frequency and intensity of summer and warm winter events conspicuously increased and atmospheric moisture decreased;there is a warming trend in the Zhalong wetland.

关 键 词：扎龙湿地 气候变化 气温 降水 

分 类 号：P467[天文地球—大气科学及气象学]