基于能值水生态足迹模型的黄河流域水资源利用评价

为辨析黄河流域突出的水资源问题,科学分析流域水资源利用状况,将能值理论和水生态足迹法相结合,构建能值水生态足迹模型,计算和分析了黄河流域2011—2018年的能值水生态足迹、能值水生态承载力和水生态盈亏状况.结果表明:2011—2018年黄河流域能值水生态足迹呈平稳上升趋势,能值水生态承载力呈先下降后上升趋势,但历年能...

Evaluation of water resources utilization in the Yellow River Basin based on emergy water ecological footprint model

To identify the prominent water resources problems in the Yellow River Basin and analyze the utilization of water resources in the basin scientifically, the emergy water ecological footprint model, which is the combination of emergy theory and water ecological footprint method, was constructed. The emergy water ecological footprint, emergy water ecological carrying capacity and water ecological profit of the Yellow River Basin from 2011 to 2018 were calculated and analyzed. The results indicated that during this period, the emergy water ecological footprint in the Yellow River Basin increased steadily, while the emergy water ecological carrying capacity decreased and then increased. Despite of that, the emergy water ecological carrying capacity has always been less than the emergy water ecological footprint, and the water ecological deficit did not turn around. Agricultural water ecological footprint accounted for the largest proportion of total water ecological footprint, while environmental ecological water footprint accounted for the lowest proportion. There were significant differences in emergy water ecological footprint and carrying capacity among different provinces(regions)in the basin. Except for that in Qinghai, Sichuan and Gansu provinces where the water ecological surplus was large, the water resources utilization in many provinces(regions)was unsustainable. The water resources security in the Yellow River Basin is not so promising. It is necessary to regulate water resources rationally and improve water efficiency, to promote the coordinated development of society, economy and environment in the basin.