Impact of climate change on crop planting structure in Anhui Province
In order to assess the influence of climate change on the planting structure of food crops in Anhui Province,this study analyzed the spatial-temporal characteristics of meteorological variables,food crop yields and sown areas based on the statistics and observational data from 2000 to 2020.By using the geographic centroid model and statistical analysis methods,the results showed as follows:(1)The air temperature show an increasing trend,acting as a"rise-drop-rise"mode;the trend of anomalous wind speed was decreasing,presenting a"positive-negative-phase change"feature;the sunshine hours show an increasing trend.(2)The changing of the center of gravity of the sown area of rice,corn,and wheat were,respectively,northeastward,northwestward,and southeastward.(3)The changing of the center of gravity of the yield of rice,corn,and wheat were northeastward,southwestward,and southeastward,respectively.(4)Air temperature had a significantly positive effect on the yield of rice,and wind speed had a significantly positive effect on rice.There was negative relationship between the yield of wheat and wind speed.Besides,sunlight hours had a significantly positive effect on the yield of rice,corn,and wheat,with a positive relationship between humidity and the yield of corn.The impact of climate change on the agricultural crop planting structure over the past 21 years was significant.The research results are expected to provide a theoretical basis for the formulation of grain production layout in Anhui Province.
planting structureclimate changegeographical center of gravityArcGISAnhui Province
万方数据
维普
