Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (22): 123-129.doi: 10.11924/j.issn.1000-6850.casb19010139

Special Issue: 农业气象

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Long Sequence Runoff in the Source of the Yangtze River: Variation Law and Its Relationship with Meteorological Elements

  

  • Received:2019-01-28 Revised:2019-04-12 Accepted:2019-04-24 Online:2019-08-13 Published:2019-08-13

Abstract: Based on the hydrometeorological data of the source of the Yangtze River(SYR) during 1956 and 2012, we used concentration period and concentration degree, linear trend test, mutation test and wavelet transform to analyze the trend of mutation and periodicity of annual runoff time series of Tuotuohe station and Zhimen station, and study the response of runoff variation to meteorological factors. The results showed that the concentration ratio of runoff in the SYR basically increase slightly,and the concentration period postponed slightly. The annual runoff presented