冬小麦种植空间区划研究

Study on Spatial Division of Winter Wheat Planting

随着人口的逐渐增多,人们对粮食的需求量加大。冬小麦作为世界上主要农作物之一,对其进行研究具有重要意义。针对以往对冬小麦进行研究没有考虑到物候期差异的情况,本文利用温度数据对冬小麦种植空间区划进行研究,首先利用气温点状矢量数据进行插值,然后对其进行分类整理得到华北地区冬小麦种植空间区划结果。插值过程中利用了趋势面插值法、样条函数法、反距离权重插值法、自然邻域法和克里金插值法,通过实验分析得出克里金插值法的结果比较理想,选择此结果划分区划,并且证明了它适用于区域变量存在空间相关性的点状矢量数据。

With the gradual increase of the population,people′s demand for food has increased.As one of the main crops in the world,winter wheat is of great significance to its research.In view of the fact that the phenological differences were not taken into account in previous studies on winter wheat,this paper uses temperature to study the spatial division of winter wheat planting.First,it interpolates the temperature point vector data,and then classifies them to get the results of winter wheat planting spatial division in North China.In the interpolation process,the trend surface interpolation method,spline function method,inverse distance weight interpolation method,natural neighborhood method and kriging interpolation method are used.The result of kriging interpolation method is found to be ideal through experimental analysis.This result is selected for division,and it is proved that it is suitable for the point vector data with spatial correlation of regional variables.