基于鱼类产卵场水力学与生态水文特征的生态流量过程研究

发布时间：2018-03-16 18:13

本文选题：产卵场　切入点：水力学特征　出处：《水电能源科学》2016年06期 　论文类型：期刊论文

【摘要】：针对山区河流珍稀特有鱼类的水力生境参数定量化困难,以及单一流量的生态需水研究难以反映天然河流生态水文过程的问题,以澜沧江上游某水电站下游分布的澜沧裂腹鱼和光唇裂腹鱼为目标物种,采用非恒定流数学模型,根据目标物种产卵场天然逐日流量过程资料,分析其产卵场在产卵期的水力学特征并构建生态水文指标体系,建立流速、水深适宜度曲线,提出流速、水深需求的适宜范围。并采用河道内流量增量法,结合生态水文指标体系,获得该水电站下泄的生态流量过程,为恢复类似流域生态系统多样性提供了参考。
[Abstract]:In view of the difficulty of quantifying the hydraulic habitat parameters of rare and endemic fish in mountain rivers, and the problem that the study of ecological water demand with a single discharge is difficult to reflect the ecological hydrological process of natural rivers, In this paper, the unsteady flow mathematical model is used to study the distribution of Lancang fissure fish and light cleft fish in the lower reaches of a hydropower station in the upper reaches of Lancang River. According to the data of natural daily flow in the oviposition of the target species, a mathematical model of unsteady flow is used. The hydraulics characteristics of oviposition in oviposition were analyzed and the ecological hydrological index system was constructed. The curves of velocity and depth suitability were established, and the suitable range of velocity and water depth demand was put forward, and the increment method of river flow was adopted. Combined with the eco-hydrological index system, the ecological discharge process of the hydropower station is obtained, which provides a reference for restoring the diversity of the similar watershed ecosystem.
【作者单位】：四川大学水力学与山区河流开发保护国家重点实验室;
【基金】：国家自然科学基金项目(51479127)
【分类号】：TV213.4

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