江西省水资源生态足迹时空格局

基于水资源生态足迹模型和水资源生态承载力模型,构建包括人均水资源生态盈余(赤字)、水资源生态压力指数和万元GDP水资源生态足迹在内的评价指标体系,对2010—2018年江西省水资源生态足迹时空格局进行分析。结果显示:在时间序列方面,江西省及各地级市水资源生态足迹整体呈波动上升趋势,水资源生态承载力波动较大;在空间分布方面,赣州市和宜春市的水资源生态足迹与水资源生态承载力位居全省前列,其他各地级市差异较大;南昌市部分年份出现人均水资源生态赤字,水资源生态压力指数较大,但万元GDP水资源生态足迹低,用水效率全省最高。

Spatial and temporal patterns of ecological footprint of water resources in Jiangxi Province

Based on the models for ecological footprint and ecological carrying capacity of water resources, an evaluation index system including ecological surplus(deficit)per capita of water resources, ecological pressure index of water resources and ecological footprint of water resources of ten thousand yuan GDP is established to analyze the spatial and temporal patterns of ecological footprint of water resources in Jiangxi Province from 2010 to 2018. The results show that in terms of time series, the ecological footprint of water resources in Jiangxi Province and prefecture-level cities generally has an increasing trend, and the ecological carrying capacity of water resources fluctuates greatly. In terms of spatial distribution, the ecological footprint and carrying capacity of water resources in Ganzhou City and Yichun City are in the forefront of Jiangxi Province, and there are great differences among other cities. Nanchang City has the ecological deficit per capita of water resources in some years, and its ecological pressure index of water resources is relatively large. However, the ecological footprint of water resources of ten thousand yuan GDP is low, and the utilization efficiency of water resources is the highest in Jiangxi Province.