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Groundwater and Drought Resilience in the SGMA Era
Society & Natural Resources ( IF 3.024 ) Pub Date : 2020-09-07 , DOI: 10.1080/08941920.2020.1801923
Ruth Langridge 1 , Nathan D. Van Schmidt 1
Affiliation  

Abstract

Projections are that climate change will increase drought risk and intensity globally. Groundwater is critical during drought, but worldwide aquifers are experiencing unrecoverable groundwater declines. California is ideal to explore strategies for managing groundwater for drought resilience. Many areas rely on groundwater, yet multiple basins are in overdraft. Management was historically centered in local water districts, but in 2014, the state passed the Sustainable Groundwater Management Act (SGMA) establishing mandatory groundwater management rules. This paper discusses strategies used prior to and post SGMA to sustainably manage groundwater for drought resilience, and evaluates the effectiveness of these strategies. It highlights two recent approaches that can increase drought resilience under climate change: flood-MAR – using flood flows for both recharge and irrigation; and the development of locally sited groundwater drought reserves that can serve as a buffer during extreme droughts.



中文翻译:

SGMA时代的地下水和抗旱能力

摘要

预计气候变化将增加全球干旱的风险和强度。在干旱期间,地下水至关重要,但是全世界的含水层都在经历着无法恢复的地下水下降。加州是探索管理地下水抗旱能力的理想选择。许多地区依靠地下水,但多个盆地都处于透水状态。管理历史上一直集中在当地水域,但在2014年,该州通过了《可持续地下水管理法》(SGMA),确立了强制性的地下水管理规则。本文讨论了SGMA之前和之后使用的可持续管理地下水抗旱能力的策略,并评估了这些策略的有效性。它着重介绍了两种可以在气候变化下提高抗旱能力的最新方法:洪水-MAR –将洪水用于补给和灌溉;以及开发可以在极端干旱期间起到缓冲作用的本地地下水干旱储备。

更新日期:2020-09-07
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