密西西比河下游有管理的含水层补给水文经济模型

IF 2.6 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Journal of The American Water Resources Association Pub Date : 2023-06-13 DOI:10.1111/1752-1688.13141
Ahmed A. Ali, Dat Q. Tran, Kent F. Kovacs, Helen E. Dahlke
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引用次数: 1

摘要

密西西比河河口含水层是美国最大的冲积地下水含水层之一。它位于密西西比河下游沿岸,面积约为 202 019 平方公里(78 000 平方英里),正在被过度使用。据估计,1981-2000 年间,该含水层的年均地下水消耗量为 51.8 亿立方米(420 万英亩-英尺)。然而,自 2000 年以来,地下水的年消耗量突然增加到 8 亿立方米(2001-2008 年)。近年来,多州已开始努力改善密西西比河河口含水层的可持续性。其中一项保护地下水资源的管理策略是含水层管理性补给(MAR)。在本研究中,我们使用一个经济模型,结合密西西比河内湾区域含水层研究(MERAS)水文地质模型,评估了不同 MAR 方案对土地和水资源利用决策以及整个地下水系统的影响。我们将 MERAS 模型中 2002-2007 年的水文条件考虑在内,运行了 60 年的耦合模型,并重复了 10 次。我们发现,当水成本大于 0.05 美元/立方米时,MAR 在经济上并不具有吸引力。单纯依靠 MAR 作为地下水管理策略不太可能提高地下水储量,而应与其他地下水保护政策共同实施。
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Hydro-economic modeling of managed aquifer recharge in the lower Mississippi

The Mississippi Embayment aquifer is one of the largest alluvial groundwater aquifers in the United States. It is being excessively used, located along the lower Mississippi River covering approximately 202,019 km2 (78,000 square miles). Annual average groundwater depletion in the aquifer has been estimated at 5.18 billion cubic meters (Gm3) (4.2 million acre-feet) in 1981–2000. However, since 2000, annual groundwater depletion has increased abruptly to 8 Gm3 (2001–2008). In recent years, multi-state efforts have been initiated to improve the Mississippi Embayment aquifer sustainability. One management strategy of interest for preserving groundwater resources is managed aquifer recharge (MAR). In this study, we evaluate the impact of different MAR scenarios on land and water use decisions and the overall groundwater system using an economic model able to assess profitability of crop and land use decisions coupled to the Mississippi Embayment Regional Aquifer Study (MERAS) hydrogeologic model. We run the coupled model for 60 years by considering the hydrologic conditions from the MERAS model for the years 2002–2007 and repeating them 10 times. We find MAR is not economically attractive when the water cost is greater than $0.05/m3. Groundwater storage is unlikely to improve when relying solely on MAR as groundwater management strategy but rather should be implemented jointly with other groundwater conservation policies.

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来源期刊
Journal of The American Water Resources Association
Journal of The American Water Resources Association 环境科学-地球科学综合
CiteScore
4.10
自引率
12.50%
发文量
100
审稿时长
3 months
期刊介绍: JAWRA seeks to be the preeminent scholarly publication on multidisciplinary water resources issues. JAWRA papers present ideas derived from multiple disciplines woven together to give insight into a critical water issue, or are based primarily upon a single discipline with important applications to other disciplines. Papers often cover the topics of recent AWRA conferences such as riparian ecology, geographic information systems, adaptive management, and water policy. JAWRA authors present work within their disciplinary fields to a broader audience. Our Associate Editors and reviewers reflect this diversity to ensure a knowledgeable and fair review of a broad range of topics. We particularly encourage submissions of papers which impart a ''take home message'' our readers can use.
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