1961—2014年陕西省气候资源变化趋势及突变分析
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  • 英文篇名:Climate resources trend and abrupt climate change in Shaanxi Province during 1961 to 2014
  • 作者:高茂盛 ; 李红梅 ; 王卫东 ; 李化龙 ; 董金芳
  • 英文作者:GAO Maosheng;LI Hongmei;WANG Weidong;LI Hualong;DONG Jinfang;Remote Sensing Information Center for Agriculture of Shaanxi Province;
  • 关键词:气候资源 ; 陕西省 ; 突变 ; 干燥度
  • 英文关键词:climate resources;;Shaanxi Province;;abrupt change;;aridity index
  • 中文刊名:NYDX
  • 英文刊名:Journal of China Agricultural University
  • 机构:陕西省农业遥感信息中心;
  • 出版日期:2017-11-15
  • 出版单位:中国农业大学学报
  • 年:2017
  • 期:v.22
  • 基金:陕西省自然科学基础研究计划(2017JQ3025);; 陕西省农业科技创新项目(2012NKC10-19);; 陕西省气象局博士基金项目(2014-B-2)
  • 语种:中文;
  • 页:NYDX201711014
  • 页数:12
  • CN:11
  • ISSN:11-3837/S
  • 分类号:127-138
摘要
为揭示陕西气候变化趋势,特别是气候要素的突变特征,为合理开发利用气候资源提供参考。基于陕西省78个气象站点1961—2014年逐日气象观测数据,运用线性趋势法、Mann-Kendall非参数检验法和滑动T检验法,分析陕西省光、热、水等气候资源的变化趋势与突变特征。结果表明:50多年来陕西及各区域气温及积温均呈显著上升趋势,平均气温在20世纪90年代中期发生显著突变,北部突变时间早于中部及南部;降水减少趋势不显著,且没有检测到显著突变;日照时数及风速均呈显著下降趋势,且均存在显著突变,日照突变发生在70年代中期,风速突变发生在90年代前期;蒸散量呈不显著下降趋势,突变发生在70年代中后期;干燥度呈不显著上升趋势,没有检测到显著突变。陕西温、光及风资源变化趋势显著,这些气候资源的显著变化对陕西农业生产和生态环境的影响利弊共存,热量资源的显著增加利于越冬农作物生长,但农作物病虫害发生及遭遇高温热害的风险也加大,在农业生产和生态环境决策上应合理利用气候资源,进而趋利避害。
        To provide references for the rational exploitation and utilization of climatic resources,the trend of climate change,especially the abrupt change characteristics of climatic factors in Shaanxi were investigated.Based on the observed meteorological data from 78 meteorological stations,the trend and abrupt change of climate resources,e.g.sunshine time,thermal resources and water,in Shaanxi Province from 1961 to 2014 were analyzed using linear trend analysis,Mann-Kendall abrupt test,nonparametric test and moving-t test methods.The results indicated that:By taking Shaanxi Province as whole,the average temperature,accumulated temperature displayed significant increasing trends.The precipitation and potential evapotranspiration had no significant decreasing trends,sunshine time and wind speed had significant decreasing trends,and aridity index had no significant increasing trend.The abrupt change of temperature occurred significantly in the mid-1990 sin Shaanxi as a whole,moreover,it occurred earlier in north Shaanxi than in central and south Shaanxi.The abrupt change of accumulated temperature occurred significantly in the late 1990 s,and accumulated temperature occurred significantly in the 2004.There had no tested significantly abrupt change of precipitation in Shaanxi as a whole.However,the abrupt change of precipitation occurred only in the south Shaanxi in the mid-1980 s.The abrupt change of sunshine time occurred in the mid-1970 s,it occurred earlier in north Shaanxi and south Shaanxi than in central Shaanxi.The abrupt change of wind speed occurred in the early 1990 s,it occurred earlier in north Shaanxi than in central Shaanxi and in south Shaanxi.Their abrupt change of potential evapotranspiration occurred in mid1970 s,and there is no abrupt change of aridity index.Although the change trends of temperature,light and wind resource during the period were obvious,their impact on agricultural production and ecological environment had advantages anddisadvantages:Significant increase of temperature was beneficial to the growth of overwintering crops,but the risk of crop diseases and insect pests and high temperature stress is also increased.Therefore,decisions about rational exploitation and utilization of climatic resources should be made to develop advantages and avoid disadvantages.
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