河南省县域粮食生产格局演化及影响因素

优化粮食生产布局、探讨粮食发展规律是有效调整农业空间结构、最大限度地提高土地生产效率的有效途径.以县域为单元,借用OpenGeoDa中空间自相关和ArcGIS 10.2中地理加权回归探究了1995-2014年河南省县域粮食生产格局演化及影响因素.结果表明:① 河南省粮食产量在全国粮食总产量中的比重总体呈现增长趋势;② 县域粮食生产现状显示"东部多西部少"的分布格局,其粮食生产多集中分布在中东部平原区的产粮大县,县域粮食生产空间集聚性逐渐增强;③ 粮食生产的影响因素在不同的空间上具有不同的影响程度,且粮食生产朝低碳有机和规模化方向发展.

The Pattern Evolution and Influencing Factors of the County-level Grain Production in Henan Province

Optimizing the grain production layout and discussing the law of development of grain are effective ways to adjust the agricultural spatial structure and fully improve the land productivity.Based on the county unit in this study, with the aid of the spatial autocorrelation method in OpenGeoDa and geographically weighted regression in ArcGIS 10.2, this paper explores the influencing factors and dynamic evolution characteristics of grain production pattern at county level of Henan Province from 1995 to 2014.The results showed that: Firstly, the proportion of the grain production in Henan Province accounts for the national grain output increase gradually;Secondly, the status of the grain production at county level of Henan Province shows that the distribution pattern of "more-east and less-west ", and grain production is centrally distributed in the major grain-producing counties of the eastern central plains;And there is a feature of space agglomeration that plays more and more significant role in the county level of grain production;Thirdly, the influence factors of grain production has different influence on different space, and grain production is developing towards the direction of low carbon organic and large-scale.