大东北地区稳定通过10℃热量条件的时空变化特征  

Spatiotemporal Change of Heat Resources at Temperature over 10 ℃ in Northeast China

作　　者：胡燕宇[1] 延军平[1] 薛然尹[1] 李敏敏[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《干旱区研究》2014年第2期279-284,共6页Arid Zone Research

基　　金：国家自然科学基金项目(41171090)

摘　　要：选取东北三省、河北、山西、内蒙古东部、北京、天津120个标准气象站点日平均气温资料,运用克里格插值法、距平分析法、小波分析等方法,对这些站点稳定通过10℃的初日、终日、持续时间以及积温进行整理、分析,用以研究这一地区气温的变化趋势和幅度。结果表明:①大东北地区气候变化与全球气候变暖趋势一致,升温幅度很大,温度变化明显;②运用空间插值法,得出温度变化的敏感区位于河北省东北部和黑龙江东部;③初日等日线、终日等日线及持续时间等日线均发生不同程度的北移,在河北北部、黑龙江、吉林地区有较大变化,积温明显增加;④在时间序列方面,年积温的距平值明显增加,气温上升是主要趋势;⑤52 a内积温距平极端差达592℃,气候变化幅度较大;⑥作物生长季逐渐延长,对农业影响很大。Based on the climate data from 120 meteorological stations in east Inner Mongolia, Hebei Province, Shanxi Province, Beijing and Tianjin, the data of the initial day, final day and duration of stabile temperature over 10 ℃ were analyzed using the Kriging, anomaly analysis, wavelet analysis, etc. , the spatiotemporal change of ac- cumulated temperature and the variation trend and range of air temperature in northeast China were researched. The results were as follows ： The trend of climate change in northeast China was consistent with that of global climate change, and the warming extent was high; The Kriging was used to reveal that the areas sensitive to temperature change were located in northeast Hebei Province and east Heilongjiang Province ; The plot lines of initial day, fi nal day and duration of temperature over 10 ℃ shifted northward in varying degrees, temperature changed signifi cantly in north Hebei, Heilongjiang and Jilin provinces, and the accumulated temperature increased markedly; Temporally, the annual accumulated temperature increased markedly; Extreme difference of accumulated temperature anomaly in recent 52 years was as high as 592 ℃ and climate change was significant; In the whole study area, the growing season of crops prolonged gradually, which was advantageous for agricultural production.

关 键 词：10℃热量条件 初日 终日 持续时间 积温 时空变化 大东北地区 

分 类 号：P423[天文地球—大气科学及气象学]