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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (19): 152-157.doi: 10.11924/j.issn.1000-6850.casb16020016

Special Issue: 农业气象

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Precipitation: Response to Local Climate Change in Jinta of Heihe River Basin

王胜 and 郭海瑛   

  • Received:2016-02-03 Revised:2016-05-30 Accepted:2016-03-25 Online:2016-07-15 Published:2016-07-15

Abstract: The paper aims to get the response features of precipitation to local climate change in Jinta of Heihe River Basin, the authors analyzed the precipitation and related climate factors data by wavelet analysis and other statistical methods. The results showed that: (1) in recent years, the annual precipitation and seasonal (except autumn) precipitation in Jinta were significantly rising; (2) through the multiple time scale analysis of precipitation, a 15-year scale mainly existed in a 42-year period; there was more precipitation amount from 1975 to 1982, 1988 to 1996, and 2004 to 2014, however the precipitation amount from 1982 to 1988, and 1996 to 2004 was less; local precipitation had fluctuations in 1973-2014 verified by using Mann-Kendall method and T slide test, but no mutations; (3) in summer, precipitation and other meteorological elements had obvious response relationship, in order to find the relationship between them, the correlation analysis indicated that: with the change of precipitation, air temperature, sunshine hours and surface temperature all showed an increasing trend, the precipitation and surface temperature had the closest relationship, and their correlation coefficient was the highest.