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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >The influence of dams on ecohydrological conditions in the Huaihe River basin, China
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The influence of dams on ecohydrological conditions in the Huaihe River basin, China

机译：大坝对淮河流域生态水文条件的影响

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摘要

Maintaining natural hydrologic variability is essential in conserving native riverine biota and river ecosystem integrity. Hydrologic regimes play a major role in structuring the biotic diversity within river ecosystems, as they control key habitat conditions within the river channel, the floodplain, etc. Alterations in streamflow regimes may modify many of these habitat attributes and impair ecosystem connectivity. There are many dams constructed in the Huaihe River basin that are drastically altering the natural hydrologic regimes of the river. We selected the Bengbu Sluice as a control node to study the influence of the Bengbu Sluice and all its upstream dams on the hydrologic regime. Using Indicators of Hydrologic Alteration and Range of Variability Approach methods, we assessed hydrologic alteration at the streamgauge site to demonstrate the influence of dams on ecohydrological conditions in the Huaihe Riverbasin. The results show that dams have a strong influence on ecohydrological conditions, especially in dry seasons. The river ecohydrological targets and the minimum ecological and environmental flow requirements for the Bengbu section defined by this study can support ecosystem management and restoration plans and provide ecological operations for the Bengbu Sluice.
机译：保持自然水文变异性对于保护原生河流生物群和河流生态系统完整性至关重要。水文状况控制河流生态系统中生物的多样性，因为它们控制着河道，洪泛区等关键生境条件。水流状况的变化可能会改变许多这些生境属性并削弱生态系统的连通性。淮河流域修建了许多水坝，这些水坝极大地改变了河流的自然水文状况。我们选择蚌埠水闸作为控制节点，以研究蚌埠水闸及其所有上游水坝对水文状况的影响。我们使用水文变化指标和变率方法的范围，评估了水位计站点的水文变化，以证明水坝对淮河流域生态水文条件的影响。结果表明，水坝对生态水文条件有很大影响，特别是在旱季。本研究确定的蚌埠段河流生态水文目标和最低生态环境流量要求可以支持生态系统管理和恢复计划，并为蚌埠水闸提供生态服务。

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