中文摘要：

在天气相关的碳的建议以后的将近 18 年压制概念(Berner R A。捱过，植物和长期的碳骑车。Geochim Cosmochim Acta， 1992， 56：32253231 ) ，重新估计是适当预定它有更新的数据集的地质的上下文。Ryskov 等。（ Ryskov 你 G， Demkin V A， Oleynik S A，等。为是的最后 5000 年和它的角色的 pedogenic 碳酸盐的动力学为在俄国的土壤的大气的二氧化碳的一座缓冲区水库。滴行星变化， 2008， 61： 6369 )最近宣称在为最后 5000 年的土壤形成期间，俄国的土壤以 2.2 kg C/的率在干旱时期期间作为 pedogenic 碳酸盐修理了大气的二氧化碳( m2 一)在黑土带， 1.13 kg C/( m2 一)在黑暗粟子的土壤， 0.86 kg C/( m2 一)在轻粟子的土壤，根据碳同位素的数据；然而，他们数据的解释不显得直接也不说服，并且这样他们的主张是多半似是而非的。他们的解释也与飞镖等得出的结论相反。（飞镖 R C， Barovich K M， Chittleborough D J，等。在中央、南部的澳大利亚的表土碳酸盐的钙：它为全球碳的来源和含意骑车。Palaeogeogr Palaeoclimatol Palaeoecol， 2007， 249：322334 ) 发现那澳大利亚的表土碳酸盐的人，没捕获任何另外的 CO2；相反，碳酸盐简单地从一个水池正在被重新动员到另外一个。这里，我们在下列二个问题上提起评价到这些解释：(1 ) pedogenic 碳酸盐的起源：硅酸盐捱过对碳酸盐捱过，并且(2 ) 在使用区分的同位素的技术焦化的碳的问题由硅酸盐捱过并且碳酸盐捱过形成了。pedogenic 碳酸盐根本不能是一个重要大气的 CO2 水池，这被结束，即焦化碳酸盐不捕获的天气相关的 pedogenic 任何另外的 CO2，当时在天气相关的 pedogenic 碳酸盐是的硅酸盐的 CO2 俘获在短期的时间规模小由于硅酸盐捱过的慢动力学。

英文摘要：

Nearly 18 years after the proposal of the weathering-related carbon sink concept （Berner R A. Weathering, plants and the long-term carbon cycle. Geochim Cosmochim Acta, 1992, 56： 3225-3231）, it is an appropriate timing to re-evaluate its geological context with the updated dataset. Ryskov et al. （Ryskov Ya G, Demkin V A, Oleynik S A, et al. Dynamics of pedogenic carbonate for the last 5000 years and its role as a buffer reservoir for atmospheric carbon dioxide in soils of Russia. Glob Planet Change, 2008, 61： 63-69） lately claimed that in the course of soil formation for the last 5000 years the soils of Russia fixed atmospheric carbon dioxide as pedogenic carbonate during the arid periods at a rate of 2.2 kg C/（m^2 a） in chemozem, 1.13 kg C/（m^2 a） in dark-chestnut soil, 0.86 kg C/（m^2 a） in light-chestnut soil, on the basis of carbon isotopic data; however, their interpretations of the data do not appear straightforward nor persuading, and thus their claim is likely misleading. Their interpretations are also contrary to the conclusions drawn by Dart et al. （Dart R C, Barovich K M, Chittleborough D J, et al. Calcium in regolith carbonates of central and southern Australia： Its source and implications for the global carbon cycle. Palaeogeogr Palaeoclimatol Palaeoecol, 2007, 249： 322-334） who found that Australian regolith carbonates did not capture any additional CO2; instead the carbonate was simply being remobilized from one pool to another. Here we raise comments to these explanations on the following two issues： （1） origin of pedogenic carbonate： silicate weathering vs. carbonate weathering, and （2） problems in using carbon isotopic technique to distinguish carbonates formed by silicate weathering and carbonate weathering. It is concluded that pedogenic carbonate may not be an important atmospheric CO2 sink at all, i.e. carbonate weathering-related pedogenic carbonate does not capture any additional CO2, while the CO2 capture in silicate weathering-related pedogenic