本文選題：四大家魚 + 水文過程�。� 參考：《人民長江》2017年06期

【摘要】：以長江中游宜都后江沱斷面四大家魚為研究對(duì)象,根據(jù)評(píng)估河流生態(tài)水文變化的IHA方法,采用8個(gè)生態(tài)水文指標(biāo)(漲水過程數(shù)、漲水時(shí)間、斷面初始流量、洪峰流量、流量日增率、斷面初始水位、洪峰水位、水位日增率)分析了長江干流四大家魚產(chǎn)卵區(qū)域水文過程與其自然繁殖產(chǎn)卵行為的相關(guān)性。研究結(jié)果顯示,漲水過程是四大家魚產(chǎn)卵的主要誘導(dǎo)因素,當(dāng)達(dá)到誘導(dǎo)產(chǎn)卵的臨界漲水天數(shù)后,只需維持流量的平穩(wěn)即可繼續(xù)產(chǎn)卵行為,而漲水期高流量維持時(shí)間則是影響其產(chǎn)卵規(guī)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.
【作者單位】： 長江水利委員會(huì)三峽水文水資源勘測局;
【分類號(hào)】：S917.4;P333

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