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湖泊科学  2001 

贵州草海湖泊系统碳循环简单模式

DOI: 10.18307/20010103

Keywords: 稳定碳同位素组成,碳循环,草海

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Abstract:

本文分析了贵州草海湖泊系统中的主要含碳物质——湖水DIC、表层沉积物有机质、水生植物的稳定碳同位素组成,其δ13C值分别为:-3.70‰至-10.60‰,-20.90‰至-21.60‰,-16.10‰至-17.40‰.通过质量平衡计算,建立了草海区域碳循环的简单模式.结果表明:对于草海这样一个水生植物茂盛的浅水富氧湖泊而言,光合-呼吸作用和有机质的降解对整个湖泊体系的稳定碳同位素组成具有决定性的作用.

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