Green efficiency of water resources in Northwest China: Spatial-temporal heterogeneity and convergence trends
Green efficiency of water resources in Northwest China: Spatial-temporal heterogeneity and convergence trends
复制标题
西北地区水资源绿色效率：时空异质性及趋同趋势
DOI：
10.1016/j.jclepro.2021.128651
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发表时间：
2021
影响因子：
11.1
通讯作者：
Wen-feng Chen
中科院分区：
文献类型：
--
作者：
Wei-ping Wu;Yi-fei Zhu;Wei-kang Zeng;Min Wang;Dong-xiao Yang;Wen-feng Chen
水资源绿色效率（WGE）是发展清洁生产、实施可持续发展的基础。本研究将WGE解构为农业用水（AGE）、工业用水（IGE）、生活服务用水（SGE）和生态用水（EGE）等绿色效率要素，并利用Super-SBM模型、空间收敛模型和探索性空间数据分析，分析西北地区WGE识别的动态变化趋势、时空演变特征和空间收敛性。结果表明，SGE的平均值及其2007年以后的年均增长率最高； AGE、IGE、SGE、EGE不仅具有明显的时空异质性，而且最终会以不同的速率（约3.8、3.30、3.25和3.20）收敛到一条稳态增长轨迹，这与经济发展水平、人口规模、产业结构、政府支出以及连接或邻近地区的空间溢出效应有关。除了有选择地改善一些外部条件，推动水资源走上稳定增长的道路外，西北地区地方政府还可以探索构建跨区域水资源合作管理和约束机制，构建水资源共享的“命运共同体”。
Green efficiency of water resources (WGE) is the basis for developing cleaner production and implementing sustainable development. This study deconstructs WGE into the components of green efficiency identified as agricultural water (AGE), industrial water (IGE), domestic service water (SGE), and ecological water (EGE), then analyzes the dynamic change trend, spatial-temporal evolution characteristics and spatial convergence of identified WGE in Northwest China utilizing the Super-SBM model, spatial convergence model together with an exploration spatial data analysis. The results show that the average of SGE and its average annual growth after 2007 are the highest; Not only do AGE, IGE, SGE, and EGE have obvious spatial-temporal heterogeneity, they will eventually converge into one steady-state growth trajectory at different rates (about 3.8, 3.30, 3.25 and 3.20), which are related to the level of economic development, population size, industrial structure, government expenditure and spatial spillover effects from joining or adjacent areas. In addition to selectively improving some external conditions to promote the path of steady growth of water resources, local governments in Northwest China can also explore the construction of cooperative management and restriction mechanisms on cross-regional water resources to build a “destiny community” for WGE.