CAJ | 학술논문

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。
본문분석료귀주초해호박계통중적주요함탄물질——호수DIC、표층침적물유궤질、수생식물적은정탄동위소조성，기δ13C치분별위：-3.70‰지-10.60‰，-20.90‰지-21.60‰，-16.10‰지-17.40‰。통과질량평형계산，건립료초해구역탄순배적간단모식。결과표명：대우초해저양일개수생식물무성적천수부양호박이언，광합일호흡작용화유궤질적강해대정개호박체계적은정탄동위소조성구유결정성적작용。
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.