基于MRIO与SNA的中国水资源空间转移网络分析

Analysis of China’s water resources spatial transfer network based on MRIO and SNA

基于2002年、2007年和2012年的多区域投入产出表的相关数据,利用多区域投入产出(MRIO)模型和社会网络分析法(SNA)分析了中国水资源流动网络的空间关联性和结构特征。结果表明:网络中的链接数量没有随水足迹贸易值的增加而增加,链接路径上的流量不断增加,网络的韧性不够,空间关联渠道有待拓展,存在一定的等级差异,稳定性需要加强;网络中一些省份链接的增加,会削弱其他省份的链接数目,这种可塑性特征有利于在全国范围内合理配置水资源;将网络划分为4个板块,板块间的溢出关系主要是以板块内部为主,且少数板块之间没有任何的溢出关系。

Based on the relevant data of multi-region input-output(MRIO)tables in the year of 2002,2007 and 2012,the spatial correlation and structural characteristics of China’s water resource flow network were analyzed by using MRIO model and social network analysis(SNA).The results show that the number of links in the network does not increase with the increase of water footprint trade value.The traffic on the link path is increasing,the network is not strong enough,the spatial connection channel needs to be expanded,there is a certain level difference,and the stability needs to be strengthened.The increase in links in some provinces will weaken the number of links in other provinces.This plasticity feature is conducive to the rational allocation of water resources across the country.The network is divided into four plates,and the spillover relationship between plates is mainly internal.There is no spillover relationship between individual plates.