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首页> 外文期刊>Journal of Environmental Management >Priority watershed management areas for groundwater recharge and drinking water protection: A case study from Hawai'i Island
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Priority watershed management areas for groundwater recharge and drinking water protection: A case study from Hawai'i Island

机译：地下水补给和饮用水保护的优先流域管理领域：夏威夷岛的案例研究

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摘要

Worldwide, water utilities and other water users increasingly seek to finance watershed protection and restoration in order to maintain or enhance water quality and quantity important for drinking water supply and other human use. Hydrologic studies which characterize the relative effectiveness of watershed management activities in terms of metrics important to water users are greatly needed to guide prioritization. To address this need, we worked with a local water utility in Hawai'i to develop a novel framework for prioritizing investments in native forest protection and restoration for groundwater recharge and applied it in the utility's priority aquifers and recharge areas. Specifically we combined land cover and water balance modeling to quantify the 50-year cumulative recharge benefits of: 1) protection of native forest from conversion to non-native forest, and 2) restoration of native forest in non-native grasslands. The highest priority areas (80th percentile of benefits) for native forest protection are projected to prevent the loss of over 48,600 m~3 per hectare of recharge over 50 years. Incorporating land cover change modeling (versus assuming all areas are equally susceptible to invasion) shifts prioritization towards low to mid-elevation mesic forest areas at the highest risk of invasion by invasive canopy species as well as to high elevation, cloud forest areas at high risk of conversion to non-native grassland or bare ground. We also find that, in the highest priority areas with substantial fog interception, native forest restoration is projected to increase recharge by over 88,900 m~3 per hectare over 50 years, but that decreases in recharge occur in areas with low fog interception. This study provides a framework for prioritizing investments in forest protection and restoration for groundwater recharge in a way that incorporates both the threat of conversion as well as changes in hydrologic fluxes. The framework and results can be utilized by current managers and updated as new ecohydrological data become available. The results also provide broad insights on the links between watershed management and groundwater recharge, particularly on islands and in other regions where species invasions threaten source watersheds and where groundwater is a primary water source.
机译：全球，水利设施和其他水用户越来越越来越努力融资流域保护和恢复，以维持或提高水质和对饮用水供应和其他人类使用重要的数量。为指导优先级，大大需要在对水用户重要的指标方面表征流域管理活动的相对有效性的水文研究。为了解决这一需求，我们在夏威夷的当地水实用程序致力于开发一个新的框架，以优先考虑对土着森林保护的投资和地下水充值的恢复，并在公用事业的优先含水层和充电地区应用。特别是，我们合并陆地覆盖和水平建模，量化了50年累积的充电效益：1）原生林从转化对非本土森林的保护，2）原生草地上的原生林恢复。本土森林保护的最高优先级领域（福利80百分位数）预计将防止每公顷50岁以下的充值损失超过48,600米〜3。纳入陆地覆盖更换建模（假设所有区域同样容易入侵）在侵入性冠层物种以及高海拔地区的侵袭性侵袭的最高风险，以高升高转换为非原生草地或裸露的地面。我们还发现，在具有实质性雾截面的最高优先级领域，预计本土森林恢复将增加每公顷超过88,900米〜3超过50岁以上的充值，但在低雾截止地区的地区发生重新充电减少。本研究提供了一个框架，优先考虑森林保护投资和地下水补给恢复的框架，这种方式包括转化威胁以及水文势态的变化。框架和结果可以通过当前的经理使用，并随着新的生态学数据可用而更新。结果还提供了关于流域管理和地下水补给之间的联系的广泛见解，特别是岛屿和物种入侵的其他地区威胁流域，地下水是主要水源。

著录项

  • 来源
    《Journal of Environmental Management》 |2021年第15期|111622.1-111622.12|共12页
  • 作者

    Leah L. Bremer; Nathan DeMaagd; Christopher A. Wada; Kimberly M. Burnett;

  • 作者单位

    University of Hawaii Economic Research Organization University of Hawai'i at Manoa 2424 Maile Way Sounders 540 Honolulu HI 96822 USA Water Resources Research Center University of Hawai'i at Manoa 2540 Dole St Holmes Hall 283 Honolulu HI 96822 USA;

    University of Hawaii Economic Research Organization University of Hawai'i at Manoa 2424 Maile Way Sounders 540 Honolulu HI 96822 USA Department of Economics University of Hawaii at Manoa 2424 Maile Way Sounders 542 Honolulu HI 96822 USA;

    University of Hawaii Economic Research Organization University of Hawai'i at Manoa 2424 Maile Way Sounders 540 Honolulu HI 96822 USA;

    University of Hawaii Economic Research Organization University of Hawai'i at Manoa 2424 Maile Way Sounders 540 Honolulu HI 96822 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Forest conservation; Forest restoration; Hydrologic ecosystem services; Invasive species; Water resources; Ecohydrology;

    机译：森林保护;森林恢复;水文生态系统服务;侵入物种;水资源;生态学学;

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