长江水文过程与四大家鱼产卵行为关联性分析

发布时间：2018-04-19 16:30

本文选题：四大家鱼 + 水文过程　；参考：《人民长江》2017年06期

【摘要】：以长江中游宜都后江沱断面四大家鱼为研究对象,根据评估河流生态水文变化的IHA方法,采用8个生态水文指标(涨水过程数、涨水时间、断面初始流量、洪峰流量、流量日增率、断面初始水位、洪峰水位、水位日增率)分析了长江干流四大家鱼产卵区域水文过程与其自然繁殖产卵行为的相关性。研究结果显示,涨水过程是四大家鱼产卵的主要诱导因素,当达到诱导产卵的临界涨水天数后,只需维持流量的平稳即可继续产卵行为,而涨水期高流量维持时间则是影响其产卵规模的主要因素。
[Abstract]:Based on the IHA method for evaluating the ecological and hydrological changes of rivers, eight eco-hydrological indexes (the number of water rising process, the time of rising water, the initial discharge of section, the discharge of Hong Feng) were adopted according to the four domestic fishes in Houjiantuo section in the middle reaches of the Yangtze River.The correlation between hydrological process and spawning behavior of the four major domestic fishes in the Yangtze River main stream was analyzed.The results show that the water flooding process is the main inducing factor of spawning of the four big domestic fish. When the critical days of induced oviposition are reached, the oviposition behavior can be continued only by maintaining a steady flow rate.The maintenance time of high discharge in flood period is the main factor to affect the scale of oviposition.
【作者单位】：长江水利委员会三峡水文水资源勘测局;
【分类号】：S917.4;P333

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