中国粮食供需的区域格局研究

发布时间：2018-03-12 12:35

本文选题：粮食供需　切入点：空间格局　出处：《地理学报》2016年08期 　论文类型：期刊论文

【摘要】：粮食安全问题在世界范围内一直被高度关注。本文主要以中国333个地级市为基本研究单元,在粮食供需现状分析的基础上,借助GIS和Geoda空间分析工具,从区域的空间差异和时空变化两个角度,建立粮食供需模型,研究中国粮食供需的结构特征和空间分布规律。结果表明:(1)2012年中国粮食供需结构为净余粮,仅有约52%的地级市能通过粮食生产保障基本粮食需求。(2)粮食供需的空间分布具有区域差异性,基本呈现西缺粮东余粮,南缺粮北余粮的特点;(3)在省域和地级市两种空间单元尺度上,粮食供需有一定的规律,表现出明显相关性,呈集聚状态。(4)2008-2012年,中国的净余粮量增加,高余粮和高缺粮是主要的变化类型,其中高余粮区对余粮量增长的贡献率达到75.24%。
[Abstract]:The problem of food security has been highly concerned in the world. This paper mainly China 333 cities as the basic research unit, based on analyzing the situation of supply and demand of grain, with the help of GIS and Geoda spatial analysis tools, from two angles of regional differences in spatial and temporal changes, establishment of grain supply and demand model, distribution structure and the space research China grain supply and demand. The results showed that: (1) 2012 China grain supply and demand structure for the net surplus, only about 52% of the prefecture level city can guarantee the basic demand for grain by grain production. (2) the spatial distribution of grain supply and demand has regional differences, showing the west east north south food surplus, the surplus of food features; (3) in the provincial and prefecture level two spatial scales, the supply and demand of food has certain characteristics, showed significant correlation, a cluster state. (4) for 2008-2012 years, the net amount of grain Chinese increases, high surplus And change is the main type of high food, including high surplus of surplus amount of contribution to the growth rate of 75.24%.

【作者单位】：北京大学城市规划与设计学院;国土资源部土地整治重点实验室;中国地质大学(北京)土地科学技术学院;
【分类号】：F326.11

【相似文献】