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湖泊科学  2009 

长春市石头口门水库颗粒物光谱吸收特性

DOI: 10.18307/2009.0218

Keywords: 吸收特性,总悬浮颗粒物,非色素颗粒物,浮游植物,石头口门水库

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Abstract:

针对东北地区水体,以长春市重要水源地石头口门水库为例,分别于2008年6月13日和9月23日对该水库进行了水体颗粒物吸收特性研究.结果显示:2008年6月水库悬浮物含量高于9月,而叶绿素a含量低于9月;总颗粒物的吸收光谱曲线类似于非色素颗粒物,非色素颗粒物吸收对其的贡献明显大于浮游植物色素,9月份浮游植物吸收对其的贡献略有增加,吸收曲线在440nm左右能明显看到浮游植物引起的吸收峰;非色素颗粒物在440nm的吸收系数与悬浮物浓度存在较好的函数关系,而与叶绿素a浓度的相关性较弱;浮游植物色素吸收系数较低,色素组成中叶绿素a占主导地位,浮游植物在440nm和675nm的吸收系数与叶绿素a含量均存在较好的指数函数关系;6月浮游植物比吸收系数在440nm和750nm的均值分别为0.0483m2/mg和0.0263m2/mg,而9月份的均值分别为0.0337m2/mg和0.0187m2/mg.

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