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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Can Water Rights Trading Scheme Promote Regional Water Conservation in China? Evidence from a Time-Varying DID Analysis
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Can Water Rights Trading Scheme Promote Regional Water Conservation in China? Evidence from a Time-Varying DID Analysis

机译：水资源贸易计划促进中国区域水资源保护吗？来自时变的证据确实分析

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摘要

Using the panel data of 30 provinces in China from 1998 to 2017, we adopt a time-varying difference-in-differences (time-varying DID) model to estimate the impact of water rights trading scheme on regional water consumption. The results show that water rights trading can significantly promote water conservation in the pilot regions by 3.1% compared to that in the non-pilot regions, and a series of robustness tests show consistent results. Policy effects are mainly driven by improving water-use efficiency and adjusting water structure; that is, by transferring water resources from the agricultural sector to the other sectors, agricultural water efficiency is improved and water conflict among sectors is alleviated; thus, water saving is achieved. In addition, by constructing two indexes of regional water pressure and tradable water resources, our heterogeneity analysis shows that water rights trading performs better in areas with high water pressure and large tradable water resources. Under the high pressure of large water use and low water endowment, water rights trading will evidently reduce water consumption more so than in the low-pressure regions, and with water rights trading, it is hard to achieve a policy effect in regions without sufficient tradable water resources. This paper provides important policy implications for China for further promoting the water rights trading scheme in the field of resource conservation.
机译：从1998年到2017年，使用中国30个省份的面板数据，我们采取了一个时变的差异（时变成次数）模型来估算水权交易计划对区域耗水量的影响。结果表明，与非试点区域相比，水权交易可以显着促进试点区域的水资源保护，一系列稳健性测试显示一致的结果。政策效应主要是通过提高水利用效率和调节水结构;也就是说，通过将水资源从农业部门转移到其他部门，农业水效率得到改善，部门之间的水冲突被缓解;因此，实现了节水。此外，通过构建区域水压和可贸易水资源的两种指标，我们的异质性分析表明，水资源交易在高水压和大型可交易水资源的地区表现更好。在大型用水量和低水禀赋的高压下，水权交易将显着降低耗水量，而不是在低压地区，随附水权交易，难以在没有足够的地区达到政策效应而没有足够的交易水资源。本文为中国进一步促进资源保护领域的水权交易计划提供了重要的政策影响。

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