摘要
本文运用ESDA空间相关分析理论,结合GIS技术,探讨了1980-2009年江西省县域粮食生产的地域格局变化规律及特征。结果表明:研究期内江西省粮食生产向产粮大县、湖区和平原区集中分布;近30a粮食生产重心一直在丰城市境内,略微向东北偏移2.09km;县域单元粮食生产具有明显的正相关性,空间聚集分布显著;1980、1990、2000和2009年位于HH和LL象限的县域分别占总单元数的49.45%、59.34%、58.24%和71.43%,局部集聚格局显著,集聚能力不断增强;粮食生产局部空间集聚显著高产区(HH)以鄱阳湖平原南部地区为中心,包括南昌县、进贤县、高安市、樟树市、丰城市、新干县、余干县、抚州市区、东乡县,显著低产区(LL)县域很少,仅包括1980年的湖口县和2000年的湖口县、星子县、永修县。影响粮食产量空间格局主要因素为粮食播种面积、有效灌溉面积、农业机械总动力、化肥使用量等。
This paper used the Exploratory Spatial Data Analysis（ESDA）,combined with GIS technology,analyzed regional pattern changes of grain production in Jiangxi Province from 1980 to 2009.Research showed that grain production of Jiangxi Province concentrated on the major grain-producing counties,Lake District and plain area in the study phase.The focus of grain production was all in Fengcheng City,shifted 2.09 km to the east-north direction in nearly 30 a.County grain production showed a positive spatial autocorrelation and significant global spatial clustering pattern.Counties fell into the quadrant of the HH and LL accounted for 49.45%,59.34%,58.24% and 71.43% of the total size in 1980,1990,2000 and 2009,respectively.The significant local spatial clustering pattern was showed,the clustering power enhancing constantly.The grain production distributed mainly in the South of Poyanghu Plain high-yield（HH）,including Nanchang County,Jinxian County,Gaoan City,Zhangshu City,Fengcheng City,Xingan County,Fuzhou Urban District and Dongxiang County.The counties of low-yield（LL） were less,only including Hukou County in 1980,and Hukou County,Xingzi County,Yongxiu County in 2000.The main factors which affected the regional pattern of grain production are grain sown area,the effective irrigated area,the total power of farm machinery,fertilizer application rate and so on.
出处
《农业现代化研究》
CSCD
北大核心
2011年第3期315-319,共5页
Research of Agricultural Modernization
基金
江西省教育厅科技项目(编号:GJJ10173)
江西省数字国土重点实验室开放基金(编号:DLLJ201008)
关键词
粮食生产
县域单元
地域格局
ESDA
江西省
grain production
county unit
regional pattern
ESDA
Jiangxi Province
