粤港澳大湾区城市群水资源配置模型

Water resources allocation model of urban agglomeration in Guangdong-Hong Kong-Macao Greater Bay Area

现有水资源评估和规划(WEAP)模型缺乏考虑地区配水优先顺序,研究基于用水安全度确定的地区配水优先度改进现有WEAP模型,并应用于粤港澳大湾区城市群水资源配置,比较了不同地区和行业配水优先顺序下的WEAP模型配水方案效果。结果表明,大湾区各市用水安全度随地区及用水行业不同呈现差异,广州、深圳、东莞生活及工业用水安全度较低;在保障生态基流的前提下,同时考虑地区和行业配水优先顺序的配水方案提升了重点地区生活及工业用水满足度,配水结果更合理;枯水期深圳及东莞用水受限,大湾区河库互联互通工程十分必要。研究同时考虑地区和行业配水优先顺序,为WEAP模型改进提供了新思路。

The existing water evaluation and planning system(WEAP)models lack consideration of regional water allocation priorities.In this paper,an improved WEAP model is developed by integrating these priorities determined by water safety degree,and is applied to water resources allocation for Guangdong-Hong Kong-Macao Greater Bay Area.The effects of allocation schemes with different regional and industrial priorities are compared.The results show the water safety of each city in this area varies across regions and industries.Guangzhou,Shenzhen and Dongguan have lower degrees of domestic and industrial water safety.Under the premise of ecological basic flows guaranteed,an allocation scheme that considers regional and industrial priorities improves the satisfaction of domestic and industrial water uses in the key areas,resulting in more reasonable allocation.In the dry period,the water demands by Shenzhen and Dongguan cannot be satisfied,and the river and reservoir connections are essential to the Greater Bay Area.This study demonstrates both regional and industrial allocation priorities are key factors to consider in improvement of the WEAP model.