摘要
结合信息熵、锡尔指数统计方法与空间数据分析方法,探讨中国膳食虚拟水消费的区域特征,得到主要结论:(1)东、中、西部的膳食虚拟水消费结构均衡度略有上升,东部地区的膳食虚拟水消费结构更趋多元化,中部次之、西部最低。(2)各类膳食虚拟水消费结构差异对地区差异的贡献份额基本稳定在一个数值上,且上下波动;东、中部地区植物性食物虚拟水消费的贡献份额呈下降的态势,西部反之,相比之下东、中、西部地区动物性食物虚拟水消费的贡献份额逐步增强。(3)根据冷热点区变化,发现中国膳食虚拟水消费的空间总体格局没有明显的跃迁,消费热点一直分布在东南沿海,而冷点区域同样在空间分布上表现出稳定的特征。
Based on the information entropy,the Theil index statistical method and the spatial data analysis method,the regional features of consumption of the dietary virtual water in China are discussed. The main conclusions are drawn as follows:( 1) The balance of consumption structure of the dietary virtual water in the east,middle and west areas of China slightly increases. The consumption structure in the east areas is more diversified,followed by the middle areas,and that in the west is the lowest.( 2) The contribution of differences of consumption structure of various types of dietary virtual water to the regional differences is stable at certain value. It fluctuates and shows a slight increase or decrease. The contribution of consumption of vegetable food virtual water in the east and middle areas exhibits a decrease trend,and that in the west areas is contrary. While the contribution of consumption of animal food virtual water in the east, middle and west areas gradually increases.( 3) According to the change of hot and cold spot areas,it is found that there is no obvious transition in the overall spatial pattern of consumption of dietary virtual water in China. The hot spot of consumption has been distributed in the southeast coast,and the cold spot areas also show stable characteristics in space.
出处
《水利经济》
2018年第3期29-34,62,共7页
Journal of Economics of Water Resources
关键词
膳食虚拟水
信息熵
锡尔指数
区域特征
冷热点格局
dietary virtual water
information entropy
Theil index
regional feature
cold-hot spot pattern
