自然资源学报 ›› 2019, Vol. 34 ›› Issue (3): 633-645.doi: 10.31497/zrzyxb.20190316

• 资源评价 • 上一篇    下一篇

基于外部效应分析机井密度对地下水位的影响

龚亚珍1(), 关宝珠2,3, 代喆1, 张惠1   

  1. 1. 中国人民大学环境学院, 北京 100872
    2. 北京大学现代农学院, 北京 100871
    3. 北京大学国家发展研究院, 北京 100871
  • 收稿日期:2018-09-26 修回日期:2018-12-28 出版日期:2019-03-28 发布日期:2019-03-28
  • 作者简介:

    作者简介:龚亚珍(1972- ),女,浙江余姚人,博士,副教授,研究方向为环境和资源经济学。E-mail: ygong.2010@ruc.edu.cn

  • 基金资助:
    中国人民大学科学研究基金项目(17XN1008)

Taking a perspective in externalities to analyze the effect of well density on groundwater table

GONG Ya-zhen1(), GUAN Bao-zhu2,3, DAI Zhe1, ZHANG Hui1   

  1. 1. School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China
    2. School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
    3. National School of Development, Peking University, Beijing 100871, China
  • Received:2018-09-26 Revised:2018-12-28 Online:2019-03-28 Published:2019-03-28

摘要:

农用机井的迅猛发展使地下水灌溉在我国的粮食生产中发挥了重要作用,但同时也使地下水面临超采严重和水位下降的严峻形势。为了可持续地利用地下水资源,政府需采取必要措施。鉴于地下水使用中存在的外部效应,合理控制机井密度可能是值得政府考虑的重要举措之一。然而,现有文献对机井密度与地下水位之间的关系仍缺乏实证分析。本研究以兰考县为案例研究区,结合有关部门的机井普查数据和研究小组搜集的农户调研数据,利用空间分析和计量模型分析,发现机井密度与地下水位之间具有显著的关系。具体而言,当某一机井100 m半径范围内的机井数目每增加一眼,该机井的水位显著下降约15 cm;机井密度对水位的边际影响随半径范围的扩大而下降。研究建议:政府在今后应采取有关措施控制机井密度,加强地下水取水许可证制度建设等配套措施。

关键词: 人口、资源与环境经济学, 外部效应, 计量模型, 机井密度, 地下水位

Abstract:

Rapid expansions of wells for irrigation water have led to severe groundwater depletion, posing serious challenge to future's food security in China. Finding solutions is critical for sustainable use of groundwater in China. As groundwater is a typical pool resource and its use gives rise to externalities, controlling well density could be a plausible solution. However, little empirical evidence is available in existing literature in China to analyze the relationship between well density and water tables. This paper therefore aims to fill in some of the gaps in existing literature using Lankao county in Henan province as a case study area. Based on household survey data and well census data, the paper conducts spatial analysis and econometric analysis to examine the relationship. It finds that there is a significant relationship between well density and groundwater tables. Specifically, for each increase in the number of surrounding wells within a radius of 100 m, the water table significantly decreases by 15 cm at a 5% significance level. Moreover, the marginal effect of well density on water table decreases significantly when the radius becomes larger and larger. Based on the findings, the paper emphasizes the importance of the government to control well density and develops a groundwater water permit system for sustainable management of groundwater in China.

Key words: externality, econometric model, well density, groundwater table, population, resources and environmental economics, externality, econometric model, well density, groundwater table