地理科学

地理科学 ›› 2003, Vol. 23 ›› Issue (6): 661-667.doi: 10.13249/j.cnki.sgs.2003.06.661

• 论文 • 上一篇    下一篇

三江平原气候突变分析

闫敏华1, 邓伟1, 陈泮勤2   

  1. 1. 中国科学院东北地理与农业生态研究所, 吉林 长春 130012;
    2. 中国科学院资源环境科学与技术局, 北京 100864
  • 收稿日期:2003-03-04 修回日期:2003-05-20 出版日期:2003-11-20 发布日期:2003-11-20
  • 基金资助:
    中国科学院知识创新工程重要方向项目(KZCX2-SW-320、KZCX2-SW-118,KZCX3-SW-NA-63)、国家自然科学基金项目(40171017)。

Analysis of Climate Jumps in the Sanjiang Plain

Yan Min-Hua1, Deng Wei1, Chen Pan-Qin2   

  1. 1. Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun, Jilin 130012;
    2. Bureau of Science and Technology for Resources and Environment, Chinese Academy of Sciences, Beijing 100864
  • Received:2003-03-04 Revised:2003-05-20 Online:2003-11-20 Published:2003-11-20

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摘要： 采用累积距平法、Jy参数法和Mann-Kendall法联合检测1955~2000年三江平原气候变化过程中的突变现象,讨论了引发三江平原气候突变的可能原因。分析发现,三江平原年降水量在20世纪60年代发生了减少突变;而三江平原在20世纪70年代和80年代连续两次经历的增温突变,使其气温变化与东北北部平原其它地区明显不同;年日照时数和平均风速的减少突变均发生在20世纪80年代。总体来看,三江平原气候变化在20世纪80年代最明显。

Abstract: The Sanjiang Plain has gone through 4 periods of large-scale reclamation from 1956 to the present. Over 50% of wetlands in the region had changed into agricultural fields. The underlying surface of the plain has changed tremendously. In this paper, monthly records of 4 climatic factors (air temperature, precipitation, sunshine-hour, and wind speed) for 21 meteorological stations covering the period 1955-2000 were used. The climate jumps in the plain were examined by accumulated departure, Jy parameter and Mann-Kendall methods in the paper. Spring months defined in the paper were March-May, summer was June-September, autumn was October-November and winter was December-February of the next year. The results of seasonal and annual climate jumps showed that a jump of annual precipitation occurred in the 1960s, which had a decrease of 66.5mm; two warming jumps of annual mean temperature happened in the 1970s and the 1980s, which made the plain be different from around areas, and had the increases of 0.4℃and 1.0℃, respectively; the jumps of annual sunshine-hour and mean wind speed of the plain in the 1980s had decreased by 121.3h and 0.5m/s, respectively. The greenhouse effect and large-scale reclamation were probably direct reasons that resulted in climate jumps of the Sanjiang Plain.

中图分类号: 

  • P467