| 引用本文: | 陈毅凤,张军,万国江.贵州草海湖泊系统碳循环简单模式.湖泊科学,2001,13(1):15-20. DOI:10.18307/20010103 |
| CHEN Yifeng,ZHANG Jun,WAN Guojiang.A Simple Carbon Cycle Model of Lake Caohai, Guizhou Province. J. Lake Sci.2001,13(1):15-20. DOI:10.18307/20010103 |
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| 摘要: |
| 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. |
| 关键词: 稳定碳同位素组成 碳循环 草海 |
| DOI：10.18307/20010103 |
| 分类号: |
| 基金项目:国家自然科学基金项目(49894170、49773270) |
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| A Simple Carbon Cycle Model of Lake Caohai, Guizhou Province |
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CHEN Yifeng1, ZHANG Jun2, WAN Guojiang2
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1.Nanjing Inst i tut e of Geography & Limnology, CAS, Nanjing 210008, P. R. China;2.Institute of Geochemistry, CAS, Guiyang, 550002, P. R. China
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| Abstract: |
| The δ13C values of the dissolved inorganic carbon (DIC), the org anic matter of surface sediments and the aquatic plant cellulose were measured in Lake Caohai, Guizhou Province.The δ13C values (vs PDB)of DIC, o rganic mat ter of surface sediment s and aquatic plant cellulose, range from -3.70‰ to -10.60‰, f rom -20.50‰ to -21.60‰, from -16.10‰ to -17.40‰ respectively.Then A simple carbon cycle model is built through the mass balance calculation.All results indicate the photosy nthesis-respiration of aquatic plants and the decomposit ion of organic mat ter are the decisive factors to the carbon isotopic compositions of the lake system as Lake Caohai, which is a shallow, oxygen-rich lake with abundant aquatic plants. |
| Key words: Stable carbon isotopic compositions carbon cycle model Lake Caohai |
