Balancing fish-energy-cost tradeoffs through strategic basin-wide dam management
Balancing fish-energy-cost tradeoffs through strategic basin-wide dam management
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DOI：
10.1016/j.resconrec.2020.104990
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发表时间：
2020-10
影响因子：
13.2
通讯作者：
Cuihong Song;Andrew O'malley;J. Zydlewski;W. Mo
中科院分区：
文献类型：
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作者：
Cuihong Song;Andrew O'malley;J. Zydlewski;W. Mo
大坝管理通常涉及水力发电能力、环境影响和项目成本之间的权衡。然而，我们对各种大坝管理方案下的这种权衡的理解仍然有限，这阻碍了我们做出合理和科学合理的大坝管理决策的能力。为了评估理论权衡的范围，水电生产的动态模型，重要的鱼类种群和项目成本开发使用系统动力学建模技术。三个大坝管理方案调查了可能的结果：大坝拆除，鱼道安装（例如，池和堰，德尼尔，和鱼类升降机），并没有采取行动。该模型被应用于位于美国缅因州的佩诺布斯科特河，作为概念验证，其中最近的行动（即，拆除水坝和修建鱼道）。我们模拟理论上的影响，这些行动对四个重要的海运行的鱼（alewifeAlosa pseudoharengus，美国shadAlosa saparissima，大西洋鲑鱼Salmo salar，和海lampreyPetromyzon marinus）通过开发一个指数的产卵人口潜力的基础上，人口模型为每个物种。最佳的水坝管理解决方案可以最大限度地提高产卵鱼种群潜力和能源生产，达到最大可实现值的60-62%，同时将项目成本限制在1700万美元（最大值的44%）。我们的研究结果表明，流域规模的管理策略可能会增加洄游鱼类的恢复，同时保持水力发电能力。管理备选办法的多样化（例如，鱼道安装、大坝拆除和发电能力的组合）可能会提高战略性鱼类-能源-成本权衡的效率。
Dam management often involves tradeoffs among hydropower generation capacity, environmental impacts, and project costs. However, our understandings of such tradeoffs under a full range of dam management options remain limited, which hinders our ability to make sound and scientifically defensible dam management decisions. In order to assess the scope for theoretical tradeoffs, a dynamic model of hydropower production, important fish populations, and project costs was developed using the system dynamics modeling technique. Three dam management options investigated the likely outcomes from: dam removal, fishway installation (e.g., pool-and-weir, Denil, and fish lift), and no action. The model was applied to the Penobscot River located in Maine, United States as a proof of concept, where recent actions (i.e., dam removal and fishway construction) have been undertaken. We modeled theoretical influence of these actions on four significant sea-run fish (alewifeAlosa pseudoharengus, American shadAlosa sapidissima, Atlantic salmonSalmo salar, and sea lampreyPetromyzon marinus) by developing an index of spawner population potential based on population models for each species. Optimal dam management solutions may maximize spawner population potential and energy production to 60-62% of maximum achievable values while limiting the project cost to US$17 million (44% of the maximum value). Our results demonstrate that basin-scale management strategies may increase the migratory fish restoration while preserving hydropower generation capacity. Diversification of management options (e.g., combination of fishway installations, dam removals, and generation capacity) may increase the efficacy of strategic fish-energy-cost tradeoffs.