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丹江口水库不同水文期真光层深度特征及影响因素分析
Authors
屈月明
李斌
申恒伦
蔡庆华
Publication date
1 January 2014
Publisher
Abstract
丹江口水库是南水北调中线工程的引用水源地。于2011~2012年对水库不同水文期的水下光合有效辐照度及引起光衰减的3种主要物质(无机颗粒悬浮物、藻类叶绿素a、溶解性有机碳)进行调查,分析了真光层深度的时空动态及影响因素。结果表明,丹江口水库真光层深度的变化范围为:1.036~15.350m;丰水期、平水期和枯水期的均值分别为:6.084m、5.353m、7.647m。丹江库区、汉江库区沿库尾至坝前均有上升的趋势。在丹江库区的敞水区真光层深度较大,水质较好。逐步回归分析表明,丹江口水库水体真光层深度主要受到无机颗粒悬浮物及浮游植物影响,但在不同水期、不同库区影响因素表现不同:在丰水期、平水期,无机颗粒物与浮游植物对真光层深度的深浅起主导作用;枯水期真光层深度波动不大,其主要影响因素为藻类叶绿素a 与溶解性有机碳
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 23/01/2021