喀斯特地区相对水资源承载力时空差异研究--以广西区为例

Spatio-temporal Variability Analysis of Relative Carrying Capacity of Water Resources in Guangxi

采用相对水资源承载力的研究方法,分别以全国和广西区为参照区域,对广西区及其14个市2004-2017年间相对水资源的人口、农业和经济承载力的时空差异进行了研究。结果表明:(1)相对于全国而言,不论水资源总量还是利用量,广西水资源可承载的人口、农业和GDP均始终高于实际的人口、农业和GDP,一直处于富余状态;(2)相对全区而言,各市水资源承载力差异明显,高承载区主要集中于桂北,中等承载区主要集中于桂西,低承载区主要集中于桂中和桂东南。研究结果为广西区水土资源的合理配置及高效利用提供了科学依据。

Taking China and Guangxi autonomous region as reference zones,the relative population carrying capacity of water resources(RPCCWR),relative agricultural carrying capacity of water resources(RACCWR)and relative economic carrying capacity of water resources(RECCWR)were calculated for the whole Guangxi Autonomous Region and its each region from 2004 to 2017,respectively by using the method of the relative carrying capacity of water resources(RCCWR).The results showed that:(1)take the whole nation,the RPCCWR,RACCWR and RECCWR were always in surplus from 2004 to 2017 whether gross amount of water resources or utilization amount of water re⁃source;(2)take the Guangxi Autonomous Region as the reference zone,the discrepancy of carrying capacity of water resources(CCWR)between different city was pronounced,and high CCWR wasin the north of Guangxi autonomous re⁃gion,middle in the west,low in the middle,south and east.This study provides a scientific reference for rational allo⁃cation and high efficient use of water and land.