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Chinese Agricultural Science Bulletin ›› 2013, Vol. 29 ›› Issue (5): 199-203.doi: 10.11924/j.issn.1000-6850.2012-2554

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Distribution Characteristics and Main Causes of Drought in Liaoning Province

  

  • Received:2012-07-19 Revised:2012-08-30 Online:2013-02-15 Published:2013-02-15

Abstract: In order to study the distribution characteristics of drought and to explore the fundamental causes of leading to agricultural drought in Liaoning Province and put forward targeted measures for responding drought. Based on the meteorological data and drought data from 1949 to 2009 of Liaoning Province, the main causes and the distribution characteristics of regional and seasonal were analyzed. The results showed that: (1) considering the temporal scale, drought occurred relatively concentrated in spring or summer and sometimes happened continuously from spring to summer. Drought most frequently happened in spring other than in summer, but the possibility of drought which continued from spring to summer was lower than it came out separately in these seasons. (2) In the spatial scale, drought often distributed in whole regions with significant regional characteristics. Drought happened more frequently in western region than in southern region and seldom in the central plain region of Liaoning Province. The main cause of drought was the seasonal distribution characteristics of precipitation.