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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (36): 264-270.doi: 10.11924/j.issn.1000-6850.2014-1749

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Sunshine Luxi Plains Distribution in Time and Space in 1961-2012

  

  • Received:2014-06-23 Revised:2014-06-23 Accepted:2014-08-08 Online:2015-03-20 Published:2015-03-20

Abstract: In order to adapt to agricultural production restructure and guide agricultural production in Liaocheng, and give a full play of its agricultural advantage, the author studied the temporal and spatial sunshine variations in the past 52 years. Climate trend rate, the trend coefficient method and GIS technology were used to clarify the temporal and spatial characteristics of shine of Luxi plains. Based on data of sunshine hours in 1961-2012 of eight counties in Liaocheng, the author constructed time series data set of the number of daily sunshine on monthly, quarterly and yearly basis, and analyzed their variation trend and spatial distribution characteristics. The results showed that: the annual hours of sunshine and the seasonal hours of sunshine of Luxi Plains both had a decreasing trend, sunshine hours of each month had a slight increase only in April and a significant decreasing trend in the rest of the months. Among the counties (cities, districts), sunshine hours in the center of Liaocheng reduced obviously, followed by Chiping in the east, Guanxian in the west and Gaotang in the northeast, while Linqing in the northwest and Shenxian in the southwest had the minimum decreasing rate. Annual monthly average sunshine time curve showed a single peak, the peak appeared in May, the least was December. Annual monthly average shine hours were the maximum in Gaotang and gradually reduced to the southwest, and were the minimum in Shenxian in spring, summer and autumn, and in Yanggu in winter. Average annual sunshine hours were the maximum in Gaotang and the minimum in Shenxian. The results could provide a scientific basis for the rational utilization of agricultural climate resources and the construction of ecological agriculture.