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本研究选择了具有我国南方岩溶石山地区特点的桂林丫吉村试验场为研究场区，对其岩溶土壤的ＣＯ２浓度变化、岩溶泉水和土壤水水化学指标、石灰岩的溶蚀作用进行了定位长期观测。观测结果显示：（１）土壤ＣＯ２浓度的季节变化在泉水和土壤水水化学上均能反映出来；（２）两个土壤剖面的石灰岩溶蚀试验结果均表明，溶蚀强度随不同土壤深度的ＣＯ２浓度的变化基本是一致的，但土壤水分的差异会造成溶蚀强度的正叠加；（３）两个土壤剖面由于所处小环境、土壤结构和与下垫面灰岩关系不同，使得其中ＣＯ２浓度历月变化特征有一定差异。
This study selected the Yaji Catchment Experimental Site in Guilin, which has the characteristics of karst rocky areas in southern China, as the research field, and conducted a long-term observation on the changes of its CO2 concentration in karst soil, the chemical indicators of karst springs and soil water and the dissolution of limestone. The results of the observation show that: (1) the seasonal variation of soil CO2 concentration can both be reflected in spring water and soil hydrochemistry; (2) The results of limestone dissolution tests on two soil profiles show that the erosion intensity varies with the CO2 concentration (3) The two soil profiles due to the small environment, the soil structure and the different underlying limestone relationship, which makes the CO2 concentration calendar There are some differences in monthly changes.