An Initial Inventory and Indexation of Groundwater Mega-Depletion Cases
文献类型：SCI/SSCI论文
| 作者 | Zhang Q. |
| 发表日期 | 2013 |
| 关键词 | Groundwater depletion Overdraft Drawdown Global water use Haihe River north china plain sea-water intrusion xi-chang area land subsidence seawater intrusion aquifer system saline groundwater coastal aquifer valley aquifer overexploitation |
| 英文摘要 | The state of groundwater systems worldwide is presently not well defined, and in particular there is little context for agencies responsible for managing water resources to evaluate occurrences of groundwater depletion against other cases globally. In this study, an initial inventory of groundwater depletion problems is compiled and ranked to identify the world's most critical cases, i.e. situations of groundwater mega-depletion. The ranking is based on an indexed approach that considers overdraft, drawdown and subsidence, plus the importance of the resources in terms of population-dependency and rates of extraction. The five most highly ranked depleted aquifers of the world include the shallow aquifers of the Hai River Plain (China), the Altiplano region (Spain), the Mexico Basin (Mexico), the Huang River basin (China) and the California Central Valley (USA). An abridged account of modelling to assess drawdown is described for the Hai River Plain, revealing that despite recharge in the order of 13,000 GL/yr, an overdraft of about 8,000 GL/yr is occurring to support the vast population of the region. This has led to up to 100 m of drawdown in places and reports of subsidence of several metres. The Hai River situation demonstrates that falling water levels may not act to alleviate pumping stresses; a symptom of unchecked extraction and an exemplary illustration of the tragedy of the commons. The causal factors leading to mega-depletion are varying across the globe and each mega-depletion case contains unique elements, although population appears to be an important factor. |
| 出处 | Water Resources Management |
| 卷 | 27 |
| 期 | 2 |
| 页 | 507-533 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0920-4741 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30165]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang Q.. An Initial Inventory and Indexation of Groundwater Mega-Depletion Cases. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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