基于生态足迹法及PSR模型的佛山市水资源可持续利用分析OA

Taking Foshan,a major city in the Guangdong-Hong Kong-Macao Greater Bay Area,as the research object and the period from 2014 to 2023 as the research period,this paper uses the water resources ecological footprint model to conduct a time-series analysis of relevant indicators such as ecological footprint in Foshan,and constructs a water resources sustainable utilization evaluation index system for Foshan based on the PSR(Pressure-State-Response)model framework.It explores the temporal variation law and sustainable utilization of Foshan's water resources ecological footprint,so as to provide decision-making reference for the sustainable utilization of water resources in urban agglomerations in the Guangdong-Hong Kong-Macao Greater Bay Area or other regions.The research results show that the per capita water resources ecological footprint of Foshan shows a downward trend,while the per capita water resources ecological carrying capacity fluctuates and rises.Ecological deficits only occurred in 2014,2017,and 2021,mainly due to the reduction of annual precipitation,reflecting the low risk resistance of ecological surplus.The ecological footprint of each water use account shows a downward trend.Among them,the proportion of production water is the highest,about 75%,but the decline rate is only 8%,and the ecological water use has decreased by 70%in ten years.It is necessary to further promote industrial transformation and ecological environment construction.The ecological footprint of water resources per 10,000 yuan of GDP has decreased significantly by 45.9%despite the growth of GDP,reflecting the gradual improvement of water resources utilization efficiency.The PSR model analysis shows that the pressure,state,response and comprehensive indexes generally fluctuate and rise,with the response index growing significantly,but the state index fluctuates significantly due to hydrological conditions.In conclusion,Foshan's comprehensive capacity for sustainable water resources utilization is constantly increasing,but attention should be paid to the fluctuation of ecological surplus,the strengthening of industrial water conservation and water resources risk response capacity,so as to further improve the level of sustainable water resources utilization in Foshan.