基于改进水资源生态足迹的云南省水资源评价

Water resources evaluation based on improved ecological footprint of water resources in Yunnan Province

使用灰水足迹(消污用水)模型改进了水资源生态足迹模型,并结合基尼系数法对云南省2012-2021年水资源进行综合评价。结果表明,研究时期内,云南省灰水足迹和水资源生态足迹总体呈下降趋势;改进模型计算的消污用水比例较大,比传统模型高出1倍左右;根据改进的水资源生态足迹发现滇中地区水资源生态盈余常年小于0,处于水资源生态赤字状态;人口和GDP与水资源生态足迹的均衡性较好,但水资源的均衡性较差,主要原因是受干旱天气影响,应加大水利工程投资以抵抗干旱影响。

The grey water footprint model(decontaminated water)was employed to enhance the ecological footprint model of water resources.Additionally,a comprehensive evaluation of Yunnan Province's water resources from 2012 to 2021 was conducted using the Gini coefficient method.The results showed that,over the study period,the grey water footprint and water resource ecological footprint in Yunnan Province exhibited an overall downward trend.The pro portion of decontaminated water calculated by the improved model was notably high,which was approximately one time higher than that of the conventional model.According to the improved ecological footprint of water resources,it was found that the ecological surplus of water resources in central Yunnan was consistently less than 0,indicating an ecological deficit.Although the balance between population,GDP and the ecological footprint of water resources was favorable,the equilibrium of water resources was poor,mainly due to the impact of drought conditions.Therefore,in creased investment in water conservation projects is necessary to mitigate the effects of drought.