基于ESDA的河南省县域烟草生产空间格局演变分析

目的]以河南省县域为研究对象,分析烟草生产空间格局演变特征,为河南省烟草生产提供科学的参考依据。方法]选用1990—2015年河南省县域烟草产量数据,采用区域重心计算模型和探索性空间数据分析方法(ESDA),对河南省县域烟草生产空间格局进行分析。结果](1)从空间分布上看,烟草高产区主要分布在豫西、豫中,豫南有少量分布,低产区则集中在豫北和豫南地区;(2)从重心格局上看,河南省烟草生产重心整体呈西移的态势,南北波动幅度较小,空间格局趋向稳定;(3)从空间相关性来看,全局自相关分析显示:河南省烟草生产分布呈现显著的空间聚集性特征,空间聚集性逐渐减弱;局部自相关分析显示:河南省烟草生产大部分地区呈现无显著相关性,高—高类型主要分布在豫中和豫西地区,高—低类型和低—高类型分布变化较大。结论]1990—2015年河南省烟草空间分布差异较大,高产区分布范围较小,且空间集聚性逐渐减弱。可通过加大科技投入、发展特色烟叶、完善基础设施等方式推动河南省烟草业的发展。

ANALYSIS ON SPATIAL PATTERN EVOLUTION OF TOBACCO PRODUCTION IN HENNAN PROVINCE AT COUNTY LEVEL BASED ON ESDA

In order to provide relatively scientific evidence to the production of tobacco in Henan province, this research takes Henan province as object of study to analyze the character of the spatial pattern evolution of tobacco production at county level. Based on the model of regional gravity and methods of exploratory data analysis ( ESDA ), the spatial pattern of county tobacco production in Henan province was analyzed by using the data of County tobacco yield in Henan province from 1990 to 2015. The results were showed as follows. (1) Based on the spatial distribution level, the high yield district of tobacco production was mainly on the west and middle of Henan province and rarely on the south of Henan, while the low yield region of tobacco production was mostly on the northern and southern part of Henan. (2) Based on the production focus level, the tobacco production focus in Henan province was westward on the whole, the fluctuation range between south and north was small, and the spatial pattern trended to be stable. (3) Based on the spatial autocorrelation level, the tobacco production distribution presented notable characteristic of spatial clustering, but the spatial clustering was wearing off from global spatial autocorrelation point. While from partial autocorrelation point, the majority districts of Henan province presented minor autocorrelation. H~H cluster was shown in the west and middle of Henan province, and there was a great change of the region of H~L cluster and L~H cluster. In summary, the spatial distribution shows great differences between regions, the scope of high yield district is relatively narrow, and the spatial cluster is wearing off. The provincial government can push the development of tobacco by various methods, like increasing input in science and technology institutions, develop tobacco with Henan characteristic and improve infrastructure.