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以桂林丫吉村岩溶实验场为例， 分析了表层带岩溶系统中碳库组成， 测定了各碳库的碳稳定性同位素丰度， 表明土壤碳是系统中最大的碳库， 生物的 Ｃ Ｏ２ 吸收同化与土壤有机质分解导致的土壤 Ｃ Ｏ２ 释放是系统中主导的碳流通过程， 系统活动态碳组分主要由土壤碳贡献， 从而揭示了土壤碳对表层岩溶作用的动力机制。
Taking the Karst Experimental Site in Yaji Village of Guilin as an example, the composition of carbon pools in surface karstification system was analyzed and the carbon stable isotope abundance of each carbon pool was determined. It shows that soil carbon is the largest carbon pool in the system and the biological C O2 absorption Assimilation and soil C02 release caused by the decomposition of soil organic matter are the dominant carbon fluxes in the system. The active carbon component of the system is mainly contributed by soil carbon, which reveals the dynamic mechanism of soil carbon on surface karstification.