Assessing the impact of Danjiangkou reservoir on ecohydrological conditions in Hanjiang river, China

Assessing the impact of Danjiangkou reservoir on ecohydrological conditions in Hanjiang river, China
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丹江口水库对中国汉江生态水文条件的影响评估

DOI:
10.1016/j.ecoleng.2015.04.006
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发表时间:
2015-08
影响因子:
3.8
通讯作者:
Wu, Jichun
Wu, Jichun
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Wang, Yuankun;Wang, Dong;Wu, Jichun

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自然径流变化是河流生态系统功能和结构的主要驱动力。水文系统的改变改变了生境属性,损害了生态系统的连通性。采用水文变化指标和变差逼近方法,对汉江中游丹江口水库近50年来的水文变化进行了研究。结果表明,丹江口水库对坝下生态水文流态产生了显著的影响,尤其是在著名的四大家鱼产卵期。为了最大限度地减少对生态系统的负面影响,有必要优化丹江口水库的现行运行规则,以保护河流生态系统健康。研究结果可为汉江丹江口水库生态系统管理和恢复提供科学依据,并为汉江丹江口水库生态调度提供关键的生态水文参数。
Natural flow variability is the primary driver of riverine ecosystem function and structure. Alterations in hydrologic regimes modify habitat attributes and impair ecosystem connectivity. The indicators of hydrologic alteration and range of variability approach methods are used to investigate the hydrologic alterations due to Danjiangkou reservoir in the middle stream of Hanjiang river, China, over the past five decades. The results show that Danjiangkou reservoir has significantly changed the ecohydrological flow regime downstream of the dam, especially in the spawning time of the famous four major carps. To minimize the negative ecological impacts, it is necessary to optimize the current operation rules of Danjiangkou reservoir for river ecosystem health protection. We hope the results of the current study could support ecosystem management and restoration plans and provide key ecohydrological parameters for the Danjiangkou reservoir ecological operations in the Hanjiang river.
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发表时间: 2012-08
期刊: Hydrology Research
影响因子: 2.7
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