| 贵州草海湖泊系统碳循环简单模式 |
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| 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[J].湖泊科学,2001,13(1):15-20. |
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| 作者姓名： | 陈毅凤 张军 万国江 |
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| 作者单位： | 1. 中国科学院南京地理与湖泊研究所，南京 210008
2. 中国科学院贵阳地球化学研究所，贵阳 550002 |
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| 基金项目： | 国家自然科学基金!项目 (4 9894170、497732 70 ) |
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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δ^13C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而言，光合一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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| 关 键 词： | 稳定碳同位素组成 碳循环 草海 湖泊 光合－呼吸作用 有机质 降解作用 |
| 收稿时间： | 2000/3/26 0:00:00 |
| 修稿时间： | 2000年3月26日 |
A Simple Carbon Cycle Model of Lake Caohai, Guizhou Province |
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| CHEN Yifeng,ZHANG Jun and WAN Guojiang.A Simple Carbon Cycle Model of Lake Caohai, Guizhou Province[J].Journal of Lake Science,2001,13(1):15-20. |
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| Authors: | CHEN Yifeng ZHANG Jun and WAN Guojiang |
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| Institution: | Nanjing Inst i tut e of Geography & Limnology, CAS, Nanjing 210008, P. R. China,Institute of Geochemistry, CAS, Guiyang, 550002, P. R. China and Institute of Geochemistry, CAS, Guiyang, 550002, P. R. China |
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| Abstract: | The δ13C values of the dissolved inorganic carbon (DIC), the organic matter of surface sedi ments and the aquatic plant cellulose were measured in Lake Caohai, Guizhou Province. The δ13C values (vs PDB) of DIC, organic matter of surface sediments and aquatic plant cellulose, range from -3.70% to -10.60‰, from -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 photosynthesis-respiration of aquatic plants and the decomposition of organic matter 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. |
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| Keywords: | Stable carbon isotopic compositions carbon cycle model Lake Caohai |
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