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以低含量有机碳的岩溶土壤（ＳＯＣ， ０．８９％）为媒介，每１５０ｇ上添加松针、梧桐叶粉各 ７．５ｇ，１５ｇ，４个试验土柱号分别为ＳＣＣ３，ＳＣＣ５；ＳＢＣ３，ＳＢＣ５，接种岩溶土壤微生物群落后，于 恒温室内进行培养淋溶实验。结果表明，土壤淋溶液的电导值受土壤有机质含量多少及性质 的影响。土壤水溶性有机碳（ＤＯＣ）淋失总量ＳＣＣ３为５４０．７ｍｇ，ＳＣＣ５为１５２２．９ｍｇ；ＳＢＣ３为 ３８３．２ｍｇ，ＳＢＣ５为５６３．５ｍｇ。同时，土壤环境中Ｃａ~２＋的释放总量ＳＣＣ３为１４５．７ｍｇ，ＳＣＣ５为 ２８８．７ｍｇ； ＳＢＣ３为１７０．０ｍｇ，ＳＢＣ５为１６７．９ｍｇ。两者呈正相关，相关系数ｒ~２＝０．８５。下伏碳酸 盐岩的溶蚀量排序为ＳＣＣ５＞ＳＢＣ３＞ＳＣＣ３＞ＳＢＣ５，表明两种不同植物凋落物经微生物分 解，产生不同质和量的ＤＯＣ，并导致土壤环境中 Ｃａ~２＋释放的差异和不同的岩溶效应。从而初步揭示不同有机碳分解导致ＤＯＣ淋失的差异性，以及ＤＯＣ对岩溶动力系统的驱动。这与Ａ．Ｈｅｙｅｓ和Ｔ．Ｒ．Ｍｏｏｒｅ的研究结果一致。
The soil with low content organic carbon (SOC, 0.89%) was used as the medium, and pine needles and sycamore leaf powder were added to each 150g, 7.5g and 15g respectively. SCC3, SCC5, SBC3 and SBC5 , After inoculation of karst soil microbial communities, cultured leaching experiments in a constant temperature room. The results show that the conductivity of soil leachate is affected by the content and nature of soil organic matter. The total amount of leaching of soil water-soluble organic carbon (DOC) was 540.7 mg, SCC5 was 1522.9 mg, SBC3 was 383.2 mg and SBC5 was 563.5 mg. At the same time, the total amount of Ca2 + released in the soil environment was 145.7 mg for SCC5, 288.7 mg for SCC5, 170.0 mg for SBC3 and 167.9 mg for SBC5. The two are positively correlated, the correlation coefficient r ~ 2 = 0.85. The order of dissolution of underlying carbonate rocks was SCC5> SBC3> SCC3> SBC5, which indicated that the litter of two different plants were decomposed by microorganisms to produce DOC of different quality and quantity and lead to the difference of Ca2 + release in soil environment and Different karst effects. Thus, the differences of DOC leaching caused by different organic carbon decomposition and the driving of karst dynamic system by DOC were revealed. This is with A. Heyes and T. R. Moore’s findings are consistent.