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Wavelet Analysis on Food Yield Change in Guangxi

YU Ping-fu et al (Agricultural and Technological Information Research Institute,Guangxi Academy of Agricultural Sciences,Nanning,Guangxi 530007)  
The present study was conducted to the mult-time scale analysis of food yield change in Guangxi and its trend forecast using Complex Gaussian wavelet transformation method.The food yield of 1949-2008 in Guangxi was used as data sample.Therefore,the stable planting area of food crops,accelerating the scientfic and technological innovation,optimizing the planting structure of food crops,and perfect the production policy of food,etc.,should be strengthened to ensure the safety of food production in Guangxi.
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