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Journal of Animal and Veterinary Advances
Year: 2012  |  Volume: 11  |  Issue: 20  |  Page No.: 3668 - 3676

Climate Change and its Impacts on the Winter Wheat Yield in Wugong Region of Shaanxi Province

Hao Ding, Zhi-Nong Wang, Hu-Jun Shang and You-Gong Zhang    

Abstract: Understanding the impacts of climate change on the Winter wheat yield in Wugong region is important for effectively making relevant countermeasures and policy. Based on the monthly weather data and Winter wheat yield data in Wugong station from 1935-2010, the Mann-Kendall Method, Rescaled Range Analysis Method (R/S), Straight Line Slipping Average Simulating Method and Path Analysis Method were adopted to study the changing tendency of the main meteorological factors, the aridity-humidity as well as the impacts of climate change on the winter wheat yield in Wugong region. The results have shown that the minimum temperature had an increasing trend, the wind speed, hours of sunshine and ET0 were all gradually decreasing, they have come to a remarkable level; SPI was dropped, the climate trended to be drought gradually. Hurst indexes of ET0 and SPI (annual value and winter wheat growth period) were all >0.5 which will appear to be the persistent trend in the future. The minimum temperature increasing trend had the most powerful comprehensive determined ability on winter wheat yield; the maximum temperature was the major limited weather factor of the Winter wheat yield increasing. However, the negative impact of climate change on the winter wheat production in Wugong region can be mitigated to some extent by some technological innovations.

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