云南省水资源生态足迹的时空演化特征分析

Analysis of the Spatial-Temporal Evolution of Ecological Footprint of Water Resources in Yunnan Province

水资源生态足迹是当前水资源研究的热点。基于水资源生态足迹模型,对云南省2008—2018年的水资源时空演化进行分析,进而了解全省水资源的动态发展状况。结果表明:①2008—2018年全省水资源生态足迹整体呈现“W”型的波动轨迹,农业用水生态足迹数值在4类水资源生态足迹账户中最高,表明农业发展对水资源的耗损最大,水资源承载力、水资源生态盈余与生态压力指数均处在可持续发展状态,万元GDP水资源生态足迹逐年下降,用水效率不断提高;②2008、2013、2018年各市州的人均水资源生态足迹空间发展不均衡,人均水资源生态盈余基本均处于短缺状态,万元GDP水资源生态足迹业呈现降低趋势,表明各市州的产业结构不断升级,用水效率不断提升。

The ecological footprint of water resources is a hot topic of current water resources research.Based on the water resources ecological footprint model,this paper analyzes the temporal and spatial evolution of water resources in Yunnan Province from 2008 to 2018,and then discusses the dynamic development of water resources in the province.The results show that:①From 2008 to 2018,the province s water resources ecological footprint showed a“W”-shaped fluctuating trajectory.The value of agricultural water ecological footprint is the highest among the four types of water resources ecological footprint,indicating that the consumption of water resources by agricultural development is the largest.The carrying capacity,ecological surplus and ecological pressure index of water resources are all in a sustainable development state;the ecological footprint of water resources per 10000 yuan of GDP is decreasing year by year,and the water consumption efficiency is continuously improving.②In 2008,2013 and 2018,the spatial development of ecological footprint of water resources per capita was unbalanced,and the ecological surplus of water resources per capita was basically in shortage;the ecological footprint of water resources per 10000 yuan of GDP showed a downward trend,indicating that the industry structure of all cities and prefectures is continuously upgraded,and the water consumption efficiency is continuously improved.