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Study on the response relationship between water supply ultimate regulation and
ecological economic effects under severe drought scenarios

LÜ Cuimei，LI Xuefeng，LING Minhua，WU Zening，HU Yuguang，LI Shuang

（School of Water Resources and Transportation，Zhengzhou University，Zhengzhou 450001，China）

Abstract：To mitigate severe drought disaster losses and ensure socio-economic growth，it′s crucial to overcome con⁃

ventional regulatory boundaries and augment potential supply，such as utilizing reservoir dead storage capacity and

groundwater overexploitation，which may increase water supply and mitigate drought loss，delivering a positive

impact，but could also inflict functional damage and destruction on the water supply system，leading to adverse

effects. In this paper，under the comprehensive consideration of the social，economic and ecological environment

impact brought by the extreme regulation measures on the water supply side，the ecological and economic effect com⁃

position system is constructed. Based on the emergy theory and analysis method of ecological economics，the effect

quantification system is proposed. Taking Chuxiong Prefecture of Yunnan Province as an example，the response rela⁃

tionship between the increase of water supply，regulation cost and ecological and economic effects of the extreme

regulation measures is analyzed. The results show that the two control measures of emergency backup water source
and temporary emergency water supply have the largest net benefit of unilateral water，but the increase of water

supply is limited，while the total increase of water supply and the total benefit of regulation and control are the largest

when the dead storage capacity of the reservoir is used. Comprehensive discussion，the use of emergency standby

water sources，the use of reservoir dead storage capacity and temporary emergency water supply are the priority con⁃
trol measures under the severe drought situation in Chuxiong Prefecture.

Keywords：severe drought；water supply side；ultimate regulation；emergy theory；ecological and economic effects

（责任编辑：韩 昆）
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