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...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.展开更多
基金supported by the Shenzhen Science and Technology Program(KCXFZ20201221173412035 and JCYJ20210324104004013)the National Key R&D Program of China(2018YFE0206200)+2 种基金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).
文摘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.
