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首页> 外文期刊>Eurasian Soil Science >The reasons for the formation of light-colored acid eluvial horizons in the soil profile
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The reasons for the formation of light-colored acid eluvial horizons in the soil profile

机译：在土壤剖面中形成浅色酸性坡地层的原因

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摘要

Concepts concerning the origin of light-colored acid eluvial horizons within the soil profiles are considered. In Russia, the current concept is related to the polygenetic origin of these horizons indicating that their formation is affected by acidic hydrolysis, lessivage, and gleying. The acidic hydrolysis under aerobic conditions was shown not to provide the reduction of Fe (III) to Fe(II) and its transfer to soil solution. Lessivage is not an obligatory factor that controls the formation of light-colored acid eluvial horizons, since its signs are often absent in the profile of soils. The only process responsible for the eluviation of Fe, Mn, and Al; the removal of hydroxide and oxide iron coatings from mineral grains; increasing the relative Si content; and the appearance of the whitish color is gleying under conditions of a stagnant-percolative water regime. Precisely this factor is the single reason for the formation of light-colored acid eluvial (podzolic) horizons. Therefore, they are monogenetic in origin.
机译：考虑了有关土壤剖面内浅色酸性坡地层起源的概念。在俄罗斯，当前的概念与这些层的多基因起源有关，表明它们的形成受到酸性水解，松动和褶皱的影响。有氧条件下的酸性水解显示不能将Fe（III）还原为Fe（II）并转移到土壤溶液中。少食不是控制浅色酸性坡地层形成的强制性因素，因为在土壤剖面中通常没有这种迹象。唯一负责洗提铁，锰和铝的过程;从矿物颗粒中去除氢氧化物和氧化铁涂层;增加相对Si含量;在停滞-渗水状态下，发白的颜色略显发色。确切地说，这是形成浅色酸性层状（梯形）层位的唯一原因。因此，它们在起源上是单基因的。

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