中国农业发展的空间格局

我国农业发展水平在空间上呈现出较明显的区域性梯度分布格局，表现在：（１）宏观上，东部、中部和西部的发展速度不均衡，呈现东部快于中部，中部又快于西部的现象；（２）中观上，以城市为中心，同一区域不同地区的发展水平和农业生产结构随距城市的远近不同而变化；（３）微观上，农业发展水平随地理海拔高度的降低而提高的趋势。本文对我国２发展的空间格局形成的过程及原因进行了初步的分析。

A Spatial Gradient Model For Assessment of Agricultural Development Level in China

The agricultural development between different regions in China have obviously showed with a spatial gradient distribution. The following phenomenon and regular patterns can be used to develop a model for assessing the agricultural developing status or level in different regions. Firstly, the developing speeds are unbalanced among the Eastern. Central and Western regions, i. e. the Eastern is macroscopic developing faster than the Central and the Central faster than the Western. Secondly, the cities in each region serve as the developing polar, so that a spatial concentric circles is formed. The greater are the distances of the rural regions to the nearly cities, the lower are the agricultural development levels, Thirdly, there is a microscopic tendency, that the developing levels are reversal relative to the geographic height above sea level. The reasons and process for the formation of these spatial distributive gradients were discussed in this paper.