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汉江四大家鱼产卵生态水文因子分析研究
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Abstract:
结合丹江口水库下游沙洋站历来四大家鱼产卵时的水文数据资料，选取8个生态水文指标，采用主成分分析法进行相关分析。结果表明，影响四大家鱼的关键生态调控因子为：洪峰初始水位、洪峰初始流量、流量日上涨率、水位上涨幅度。这样可以简化水库生态调控时的难度，对生态修复具有一定的指导意义。
Based on the historical hydrological data of the four major Chinese carps spawning at the Shayang Sta-tion in the lower reaches of Danjiangkou Reservoir, eight ecological hydrological indicators were se-lected to analyze the correlation between the ecological hydrological indicators and spawning using principal component analysis (PCA) method. The results show that the key ecological control factors of the influence of four major Chinese carps are flood peak initial water level, flood peak initial flow, rise rates of flow in one day , range of water level during the flood . This will greatly simplify the difficulty of the reservoir ecological regulation, and have certain guide of the ecological restoration.
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