新疆果蔬生产集聚与产地预冷的空间差异分析

基于探索性空间数据分析(ESDA)方法,以新疆84个市县为空间观测单元,利用2009—2015年果蔬产量和保鲜储藏设备量数据,对新疆果蔬生产集聚和产地预冷保鲜现状进行全局和局域时空差异实证分析。结果表明:果蔬生产空间分布具有集聚性,但蔬菜和果用瓜的集聚区有所不同,而产地预冷保鲜未见明显集聚区,且发展水平较低;全局Moran′s I统计分析可以看出,果蔬生产存在显著的空间自相关,而产地预冷保鲜呈随机分布,无明显相关性;通过局域分析空间相关模式及时空演变态势可以看出,蔬菜分布变化较小,果用瓜H-H集聚区有扩大趋势;蔬菜生产集聚在乌昌地区、果用瓜生产集聚在吐哈地区,喀什地区是果蔬生产的双集聚区;最后,该研究为解决生鲜农产品"最先一公里"问题提出了政策建议。

Spatial Differences of Fruits and Vegetables Field Pre-cooling and Production Agglomeration in Xinjiang

The empirical analysis of spatial differences between fruit-and-vegetable production and field pre-cooling was based on the method of Exploratory Spatial Data Analysis by using the output data and quantity of postharvest fresh-keeping equipments in Xinjiang.The global distribution of vegetables and melons production had significant characteristics of spatial concentration but with different agglomeration areas respectively.On the contrary,field pre-cooling had no remarkable agglomeration areas with low developing level.Moran′s I statistics showed strong evidence that spatial autocorrelation existing in the vegetables and melons production,but random on field pre-cooling with no obvious spatial correlation.Further local analys about spatial correlation mode and space-time evolution indicated that distribution of vegetables changed smaller than melons,which trended to expand.Urumqi and Changji districts were cluster areas of vegetables,while Turpan and Hami were that of melons.Kashgar Prefecture was the common agglomeration area of vegetables and melons.Finally,policy suggestions would be given to solve‘the first one kilometer’problems of fresh agricultural product accordingly.