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首页> 外文学位 >Valuing Groundwater Services and Water Portfolio in Irrigated Agriculture with a Hedonic Pricing Model.
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Valuing Groundwater Services and Water Portfolio in Irrigated Agriculture with a Hedonic Pricing Model.

机译：用享乐定价模型评估灌溉农业中的地下水服务和水量。

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摘要

Water plays a vital role in the processes and functioning of the Earth's ecosystems. Only one percent of the earth's fresh water resources are available for human activity. The gap between water supply and demand is increasing due to population growth, development pressure and climate change. Poor water quality aggravates this imbalance even more. A serious concern that naturally arises is how will agriculture, which consumes 70% of world's freshwater withdrawals, respond to these issues. This creates an increasing need for efficient strategies for water management in terms of both water quantity and quality in agriculture. With those needs in mind, the objectives of this research are to, first, better understanding how and the magnitude by which changes in water supply characteristics influence farmland values and second, identify possible adaptation strategies that reduce negative impacts of such changes. With a micro-level data set on approximately 700 agricultural parcels and a hedonic property value model, this dissertation begins by focusing on how groundwater quality and quantity differences and their interactions influence farmland values in the Central Valley, California, a state plagued by both groundwater overdraft and salinity issues. Then this analysis is extended to the entire state of California using information on 1900 agricultural parcels to investigate how different water supply characteristics from different water supply sources influence farmland values and how developing a diversified water portfolio can mitigate the negative changes associated with water supplies. One major conclusion of this dissertation is the importance of recognizing that water is a differentiated product and that there are several pathways in which it can influence irrigated agriculture, including changes in levels, variability and quality. Another major conclusion, and one that can be applied to other regions globally as water becomes scarcer and any particular water supply source becomes less reliable, is that there seem to be significant benefits to water districts and managers in developing a more diversified water portfolio, a lesson embraced all to well in other sectors of the economy, notably the financial sector.
机译：水在地球生态系统的过程和功能中起着至关重要的作用。地球上只有百分之一的淡水资源可用于人类活动。由于人口增长，发展压力和气候变化，供水和需求之间的差距正在扩大。水质差会加剧这种不平衡。自然而然会引起严重的关注，即消耗了世界淡水抽取量的70％的农业将如何应对这些问题。因此，就农业用水量和水质而言，越来越需要有效的水管理策略。考虑到这些需求，本研究的目的是，首先，更好地了解供水特征的变化如何以及在多大程度上影响农田价值；其次，确定可能减少这种变化的负面影响的适应策略。利用大约700个农业地块的微观数据集和享乐价值模型，本文着重研究地下水质量和数量差异及其相互作用如何影响加利福尼亚州中部山谷的农田价值，这两个州都困扰着地下水透支和盐度问题。然后，使用有关1900个农业地块的信息，将这一分析扩展到整个加利福尼亚州，以调查来自不同供水源的不同供水特性如何影响农田价值，以及开发多样化的水资源组合如何减轻与供水相关的负面变化。本论文的一个主要结论是认识到水是一种差异化产品并且有多种途径可以影响灌溉农业的重要性，包括水位，变异性和质量的变化。另一个重要结论是，随着水资源的稀缺和任何特定供水源的可靠性下降，可以在全球其他地区应用的结论是，水利区和管理者在开发更加多样化的水资源组合方面似乎会受益匪浅，该课程在经济的其他部门（尤其是金融部门）中表现良好。

著录项

  • 作者

    Mukherjee, Monobina.;

  • 作者单位

    University of California, Riverside.;

  • 授予单位 University of California, Riverside.;
  • 学科 Economics Environmental.;Economics Agricultural.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 108 p.
  • 总页数 108
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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