The reason is the spatial concentration of population and resources had the effect of increasing returns to scale.
原因是人口和资源的空间集聚产生了规模收益递增的效应。
The field scale spatial variability of soil properties is one of the key factors which have considerable effect on water flow and solute transport.
田块尺度土壤特性的空间变异性对水分与溶质运移具有明显的影响。
With the spatial resolution of gridding cells improved and the spatial scale of administration cell increased, this method of data gridding will have a more satisfied effect.
如果提高网格单元的分辨率和行政单元数据的空间尺度，网格化的结果就会达到更加令人满意的效果。
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