鄱阳湖流域水资源生态安全状况及承载力分析

Analysis on ecological security and ecological carrying capacity of water resources in the Poyang Lake Basin

为系统评估鄱阳湖流域水资源生态安全状况,基于水资源生态足迹模型计算了流域所在地市水资源生态足迹和水生态承载力,并通过水资源生态盈余和生态赤字、万元GDP水资源生态足迹及水资源生态经济协调指数评估了水资源生态压力状况。结果表明:研究区内农业用水是产生水资源生态足迹的主要类型,宜春市是产生水资源生态足迹最多的地区;各市均处于生态盈余状态,但多数地区水生态承载力有所降低;在产生水资源生态足迹的因素中,应重点关注农业用水和水污染因素;研究区万元GDP水资源生态足迹逐年降低,萍乡市和吉安市水资源的生态经济协调性下降。各市应以绿色发展为目标,注意水资源消耗强度,通过建立健全农业水价形成机制、持续加强水环境治理等措施,保障水资源的可持续利用。

In order to systematically evaluate the water ecological security in the Poyang Lake Basin,the water ecological footprint and water ecological carrying capacity were calculated based on the ecological footprint model.In addition,the ecological pressure of water resources was evaluated from the dimensions of water ecological surplus,water ecological footprint of GDP,and eco-economic coordination index.The results show that agricultural water resources ecological footprint is the main type of water ecological footprint in the study area,and Yichun City is the region with the most ecological footprint.All cities are in the state of an ecological surplus,while the water ecological carrying capacity in most areas decreased.Agricultural water and water pollution should be paid more attention to among the factors producing water ecological footprint.The water ecological footprint of GDP decreased year by year,and the eco-economic coordination of water resources in Pingxiang City and Ji’an City declined.All cities should aim for green development,pay attention to the consumption intensity of water resources,and ensure the sustainable use of water resources by establishing and improving the mechanism of agricultural water price,and continuously strengthening water environment management.