基于三维水足迹模型的河南省水资源可持续利用水平评价

Assessment of sustainable utilization level of water resources in Henan Province based on a three-dimensional water footprint model

基于三维水足迹模型,以水生态赤字与盈余、水压力指数、水资源集约利用指数和水资源可持续指数4个指标构建水资源可持续利用水平指标评价体系,从时间上和空间上分析河南省的水资源可持续利用水平,并且利用对数平均迪氏指数分解法分析水足迹变化的驱动因素。结果表明:河南省水足迹由大到小为生产用水足迹、生活用水足迹和生态用水足迹,其中豫北和豫中各市的水足迹深度较大;河南省整体水资源可持续利用水平较差,其中豫北和豫中地区的水资源可持续利用水平最差;经济规模效应、人口规模效应对水足迹的变化具有正向驱动作用,而水足迹强度效率效应和水资源承载力效应具有负向驱动作用。

Based on a three-dimensional water ecological footprint model,an index evaluation system of sustainable utilization of water resources was constructed with four indexes,including water ecological deficits and surplus,water pressure index,water resources intensive use index and water resources sustainable index.Then,the sustainable utilization level of water resources in Henan Province was analyzed from spatial and temporal perspectives,and the driving factors of water footprint change was also discussed using logarithmic mean Divisia index analysis.The results show that the water footprint of Henan Province from largest to smallest is production water ecological footprint,domestic water ecological footprint and ecological water ecological footprint,and the water footprint depth of the cities in eastern Henan and central Henan is larger.Moreover,the overall sustainable utilization of water resources in Henan Province is poor,among which the cities in north Henan and central Henan have the worst performance.Economic scale effect and population scale effect have a positive driving influence on the changes of water footprint,whereas intensity efficiency effect of water footprint and water resources carrying capacity effect have a negative driving influence.