Arid Zone Research ›› 2019, Vol. 36 ›› Issue (6): 1487-1493.

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Spatiotemporal Variation of Precipitation in Tomur Peak Nature Reserve from 1967 to 2018

ZHAO Jing-qi, Mansur Sabit, Mailikai Aimaiti, Nijiati Yimier   

  1. School of Geographic Science and Tourism, Xinjiang Normal University, Urumqi 830054, Xinjiang, China
  • Received:2019-06-09 Revised:2019-08-08 Online:2019-11-15 Published:2019-11-15

Abstract: In this paper, the precipitation data from 6 meteorological stations around Tomur Peak Nature Reserve from 1967 to 2018 were selected for linear regression analysis and reliability test of precipitation, precipitation days and precipitation intensity. The results showed that: ①The annual precipitation, precipitation days and precipitation intensity in Tomur Peak Nature Reserve were all in a fluctuating trend, and they all passed the significance level (α=0.05) test; ②The seasonal difference of precipitation in Tomur Peak Nature Reserve was obvious. Precipitation was mainly concentrated in summer, and the humidification was mainly concentrated in summer and autumn. Seasonal precipitation was in an increase trend in a fluctuation way. The credibility test of the increase trend of precipitation and precipitation intensity in each season revealed that the increase trend of precipitation in spring, summer and autumn was obvious at the level of 0.05, and the increase trend of precipitation intensity in winter was obvious; ③An annual precipitation mutation occurred in 1997, and the significance level (α=0.05) was tested. 

Key words: precipitation, spatiotemporal change, mutation analysis, Xinjiang