A multi-objective optimization approach for harnessing rainwater in changing climate  

作　　者：Ling-Yu MENG Zhan TIAN Dong-Li FAN Frans H.M.VAN DE VEN Laixiang SUN Qing-Hua YE San-Xiang SUN Jun-Guo LIU Laura NOUGUES Daan ROOZE 

机构地区：[1]School of Chemical and Environmental Engineering,Shanghai Institute of Technology,Shanghai 201418,China [2]Guangdong Provincial Key Laboratory of Soil and Groundwater Poution Control,School of Environmental Science and Engineering,Southern University of Scienceand Technology,Shenzhen 518055,China [3]Pengcheng Laboratory,Shenzhen 518000,China [4]Deltares,Delft 2629 HV,Netherlands [5]Water Management,Faculty of Civil Engineering and Geosciences,Delft University of Technology,Delft 2628 CN,Netherlands [6]Department of Geographical Sciences,University of Maryland,Maryland 20742,United States [7]School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China

出　　处：《Advances in Climate Change Research》2024年第5期976-987,共12页气候变化研究进展（英文版）

基　　金：supported by the Shenzhen Science and Technology Program(KCXFZ20201221173412035 and JCYJ20210324104004013);the National Key R&D Program of China(2018YFE0206200);the Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control(2023B1212060002);the Guangdong Basic and Applied Basic Research Foundation(2022A1515011070);the High-level University Special Fund of SUSTech(G03050K001).

摘　　要：As the world grapples with the profound impacts of climate change,water scarcity has become a pressing issue.However,there is a shortage of in-depth research on the trade-offs between water resource dependence and the economic,ecological,and social needs of arid and semi-arid regions like Lanzhou,China.Flower cultivation in Lanzhou relies heavily on the Yellow River,often overlooking the potential of natural rainfall.Here we first calibrated a water balance model through artificial precipitation experiments in a Soil and Water Conservation Demonstration Park in Lanzhou.We then developed a multi-objective optimization model to balance the cost-benefit considerations of various plausible measures across economic,ecological,and social dimensions in the searching for solutions that are more adaptable to climate change and local devel-opment needs.Model simulations show that the solutions we designed can effectively manage water-shortage days,significantly reduce Yellow River water extraction,and improve cost-effectiveness,meeting 66%-80%of water needs for flower cultivation in the studied park.The findings highlight the potential of rainwater collection and utilization solutions to mitigate water scarcity in arid and semi-arid cities,thereby enriching water resource management.

关 键 词：Rainwater harvesting Rainwater resource utilization Climate change adaptation Multi-objective decision making Arid and semi-arid regions 

分 类 号：P467[天文地球—大气科学及气象学]