山西省生态用水发展情况的再探讨

Re-Discussion of the Development of Ecological Water Use in Shanxi Province

采用生态用水模数、洛伦兹曲线和相关分析方法,对2011~2020年山西省生态用水量的变化因素进行深入探讨。研究结果如下:1) 10年间山西省工业用水和生活用水的集约循环程度提高,在一定程度上促进了生态用水使用量增加。2) 各市生态用水的年际投入差距随时间逐渐减小;基本呈现经济发达城市生态用水投入更多、反之亦然的规律;两个五年计划的交界期,各市在生态用水的投入上差距较大,可能与衔接时期的社会经济发展转型相关。3) 建成区绿化覆盖面积、GDP、居民生活用水量和当地水资源量四个因素对生态用水投入产生了影响,但影响程度大小随四个因子的组合而产生差异,个别市可能存在更为复杂的影响机制。

Ecological water use modulus, Lorentz curve and related analysis methods were used to deeply discuss the change factors of ecological water consumption in Shanxi Province from 2011 to 2020. Study results show: 1) The increase in the intensive recycling industrial water and domestic water in Shanxi Province in the past 10 years may have promoted the increase of ecological water use to a certain extent. 2) The in-ter-annual gap in ecological water investment between cities gradually decreased, but there was a large difference among cities in the same year, which showed the ecological water investment in developed cit-ies was more and vice versa, and the gap in ecological water investment between cities was large during the transition period of the two five-year plans, which may be related to the social and economic develop-ment transformation. 3) Four factors, including green coverage area of built-up areas, GDP, domestic water consumption and local water resources, have an impact on ecological water input, but the degree of influ-ence varies with the combination of the above four factors, and there may be more complex influence mechanisms in individual cities.