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雷达卡
摘要翻译：
了解节水替代方法的有效性对于确保城市居民用水服务的安全和可靠性至关重要。我们分析了运行时间最长的“现金换草”政策之一的数据--南内华达州水务局的水智能景观项目，在该项目中，房主被支付费用，以xeric景观美化取代草。我们使用了内华达州拉斯维加斯30万户家庭长达12年的月用水量记录面板数据集。利用面板差异中的差异方法，我们估计每平方米草皮被移除的平均节水量。我们发现，参与该项目使接受治疗的家庭平均消费减少了18%。我们没有发现任何证据表明水资源节约随着景观年龄的增加而降低，或者单位面积的水资源节约受到回扣价值的影响。根据移除草皮效益的假定时间范围，我们发现WSL计划每千加仑节约用水的成本约为1.62美元，与其他节水或增加供水的方法相比较，这是有利的。
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英文标题：
《How Smart Are `Water Smart Landscapes'?》
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作者：
Christa Brelsford, Joshua K. Abbott
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最新提交年份：
2018
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分类信息：
一级分类：Economics 经济学
二级分类：Econometrics 计量经济学
分类描述：Econometric Theory, Micro-Econometrics, Macro-Econometrics, Empirical Content of Economic Relations discovered via New Methods, Methodological Aspects of the Application of Statistical Inference to Economic Data.
计量经济学理论，微观计量经济学，宏观计量经济学，通过新方法发现的经济关系的实证内容，统计推论应用于经济数据的方法论方面。
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英文摘要：
Understanding the effectiveness of alternative approaches to water conservation is crucially important for ensuring the security and reliability of water services for urban residents. We analyze data from one of the longest-running "cash for grass" policies - the Southern Nevada Water Authority's Water Smart Landscapes program, where homeowners are paid to replace grass with xeric landscaping. We use a twelve year long panel dataset of monthly water consumption records for 300,000 households in Las Vegas, Nevada. Utilizing a panel difference-in-differences approach, we estimate the average water savings per square meter of turf removed. We find that participation in this program reduced the average treated household's consumption by 18 percent. We find no evidence that water savings degrade as the landscape ages, or that water savings per unit area are influenced by the value of the rebate. Depending on the assumed time horizon of benefits from turf removal, we find that the WSL program cost the water authority about $1.62 per thousand gallons of water saved, which compares favorably to alternative means of water conservation or supply augmentation.
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PDF链接：
https://arxiv.org/pdf/1803.04593
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