Chinese Journal of Agrometeorology

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Characteristics of Temporal and Spatial Distribution of Precipitation During Crop Growing Season in Jilin Province

ZHANG Wei1,3, YAN Min-Hua1, CHEN Pan-Qin2, XU He-Lan4, LIU Zhe-shu5(1. Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, China; 2. Bureau of Science and Technology for Resources and Environment, Chinese Academy of Sciences; 3. Graduate School of Chinese Academy of Sciences; 4. University of Engineering and Technology of Liaoning; 5. Meteorological Bureau of Baoqing County)   

  • Online:2007-08-10 Published:2007-08-10

Cited

46

Abstract: Based on the precipitation data observed in 47 meteorological stations in 1961-2001 from May to September which was defined as the crop growing season in Jilin Province, the characteristics of time series, temporal and spatial distribution, tendency and persistence of the precipitation during the crop growing season in Jilin Province was analyzed by using Empirical Orthogonal Function (EOF), Rotated Empirical Function (REOF), Man-Kendall test and R/S method. The results showed that four parts were identified as highly related regions. The precipitation during crop growing season in Jilin Province had decreased by 0.969 mm per year. The change tendency of the precipitation during crop growing season was the same as the before in the most regions of Jilin Province.

Key words: Jilin Province, Jilin Province, EOF, REOF, Mann-Kendall, R/S analysis