摘要
根据齐齐哈尔市1951-2008年气象观测数据,利用统计分析方法分析了58年来扎龙湿地气温和降水的变化情况。分析结果表明:年平均气温变化呈上升趋势,年降水量变化呈波动趋势,存在2～3年、6～7年变化周期。气温的季节变化呈不同程度的上升趋势,降水的季节变化呈不同程度的波动趋势;年均气温的代际变化较为和缓,呈小幅上升趋势,季节气温的代际变化70年代之前变化不大,之后明显上升。年降水量和夏季降水量的代际变化明显,其它季节变化不大;1987年为气温发生突变的年份,降水无突变发生。
The changes of air temperature and precipitation were analyzed by using statistical analysis method based on the observed meteorological data from 1951 to 2008 in Zhalong wetland.The results indicated that the trend of annual mean air temperature was upward and the trend of annual precipitation was fluctuated.The results also showed that there were precipitation cycles of 2～3 years and 6～7 years in the area.The trends of four seasonal air temperatures were increasing at different degrees and the trends of four seasonal precipitations were changing in fluctuation at indifferent degrees;Decadal variations of annual mean air temperature were upward at small extent,the decadal variations of seasonal mean air temperature were increasing obviously after 70＇s but the change was not significant before 70＇s.Decadal variations of annual precipitation and summer precipitation were more significant than other seasons;The abrupt change of air temperature occurred in 1987 but the abrupt change of precipitation didn＇t occur.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2011年第11期86-92,共7页
Journal of Arid Land Resources and Environment
基金
2010年白头鹤国际援助基金项目(GMIA)资助
关键词
气温
降水
变化特征
周期
突变
扎龙湿地
air temperature
precipitation
characteristics of change
cycle
abrupt change
Zhalong wetland
