| 摘要: |
| 利用东北地区89个气象站的逐日地面气候观测资料，采用气象气候倾向率、MK检验等气候统计 诊断方法，分析54年来东北地区热量资源要素的变化规律，研究结果表明:（1）东北地区无论是年平均 气温还是各季节平均气温都表现明显的升高趋势，但各季节间气温增幅存在差异，冬季增温幅度最大，为 0.49℃/10年，夏季增温增幅最小，为0.17℃/10年;（2）≥0℃和≥10℃积温增加趋势明显，倾向率分别 为58.74℃/10年和60.97℃/10年;（3）≥0℃初日平均提前1.98天/10年，终日平均延后0.53天/10年， 持续天数平均延长2.34天/10年;≥10℃活动积温初日平均提前1.18天/10年，终日平均延后0.57天/10 年，持续天数平均延长2.49天/10年;（4）较1956～1979年，1980～2009年各界限温度和活动积温等值 线在空间上明显北移。 |
| 关键词: 气候变化 东北地区 热量资源 特征分析 |
| DOI：10.7621/cjarrp.1005-9121.20130203 |
| 分类号: |
| 基金项目:基金项目:国家重点基础研究发展计划（2010CB951501） |
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| SPATIO-TEMPORAL CHARACTERISTICS OF THERMAL RESOURCES IN NORTHEAST CHINA DURING 1956—2009 |
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Liu Yang1, Wang Zhanhai2, Jiang Wenlai1, Xiao Bilin1, Lei Bo3
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1.Institute of Agricultural Resources and Regional Planning， Chinese Academy of Agricultural Sciences， Beijing 100081;2.Institute of Agricultural Sciences of Hulunbeier，Zhalantun 162650;3.National Center for Efficient Irrigation Engineering and Technology Research， Ministry of Water Resources， Beijing 100044
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| Abstract: |
| Based on the climate data of 89 meteorological stations， the characteristics of thermal change from 1956 to 2009 in Northeast China were studied using the climatic tendency rate and the non-parametric Mann-Kendall （MK） statistical test. The results showed that（1） both annual average temperature and seasonal average tempera- ture increased， but the warming range varied in different seasons， which increased 0.49℃/10a in winter and 0.17℃/10a in summer.（2） active accumulated temperature above 0℃ and 10℃ increased by 58.74℃/10a and 60.97℃/10a， respectively.（3） the first day when the daily temperature reached above 0℃ was 1.98d/10a earli- er， while the last day was 0.53d/10a later， and days keeping above 0℃ increased by 2.34d/10a; the first day when the daily temperature arrived above 10℃ was 1.18d/10a earlier， while the last day was 0.53d/10a later， and days keeping above 10℃ increased by 2.49d/10a.（4） Compared with the period of 1956 to 1979， isotherms and the contours of active accumulative temperature in Northeast China remarkably moved northward during the pe- riod of 1980 to 2009. |
| Key words: climate change Northeast China thermal resources characteristics |
