Quantifying changes in water use and groundwater availability in a megacity using novel integrated systems modeling

D. W. Hyndman, T. Xu, J. M. Deines, G. Cao, R. Nagelkirk, A. Viña, W. McConnell, B. Basso, A. D. Kendall, S. Li, L. Luo, F. Lupi, D. Ma, J. A. Winkler, W. Yang, C. Zheng, J. Liu

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Water sustainability in megacities is a growing challenge with far-reaching effects. Addressing sustainability requires an integrated, multidisciplinary approach able to capture interactions among hydrology, population growth, and socioeconomic factors and to reflect changes due to climate variability and land use. We developed a new systems modeling framework to quantify the influence of changes in land use, crop growth, and urbanization on groundwater storage for Beijing, China. This framework was then used to understand and quantify causes of observed decreases in groundwater storage from 1993 to 2006, revealing that the expansion of Beijing's urban areas at the expense of croplands has enhanced recharge while reducing water lost to evapotranspiration, partially ameliorating groundwater declines. The results demonstrate the efficacy of such a systems approach to quantify the impacts of changes in climate and land use on water sustainability for megacities, while providing a quantitative framework to improve mitigation and adaptation strategies that can help address future water challenges.

Original languageEnglish (US)
Pages (from-to)8359-8368
Number of pages10
JournalGeophysical Research Letters
Volume44
Issue number16
DOIs
StatePublished - Aug 28 2017
Externally publishedYes

Keywords

  • Crop model
  • Groundwater
  • Land use
  • Recharge
  • Sustainability
  • Systems approach

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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