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根据实地考察所得,讨论我国荒漠土以东的灰钙土及棕钙土的概念、分类及其分布范围.灰钙土是一类发育明显的土壤,形成于黑垆土与灰漠土之间的荒漠草原地区,有30厘米左右的有机质层和明显的钙积层,层中CaCO_3含量是表层的1.5倍左右;为底层的1.2～1.4倍.内蒙高原的棕钙土形成在干草原地区,温度比灰钙士低,色调带红,剖面石灰反应上弱下强,钙积层CaCo_3含量数倍于上、下土层,与灰钙上有别.但棕钙土与栗钙土和淡栗钙土无特殊区别宜属于同一土类.鄂尔多斯高原西部的地带性土壤与灰钙土接近,而不同于棕钙土.内蒙鄂托克旗至宁夏盐池县一带之间并无两个不同土类的界限.
According to the fieldwork, we discuss the concept, classification and distribution range of calcareous soil and calcareous soil to the east of the desert soil in our country.Calcified soil is a kind of well-developed soil formed between black soil and gray desert soil Of the desert steppe area, there are about 30 cm of organic matter layer and obvious calcium accumulations, the CaCO_3 content in the layer is about 1.5 times of the surface layer and 1.2-1.4 times that of the bottom layer.Calcium in Inner Mongolia Plateau is formed in the steppe, The temperature is lower than that of calcium citrate, the color is reddish, the reaction of lime is weak on the profile, calcium content CaCo_3 is several times higher than on the upper soil, but different from gray calcium, but brown soil and chestnut soil and light No special difference between the chestnut soil should belong to the same soil.Earthwise soil in the western Ordos Plateau and ash soil close to, and different from the brown earth.Nemen Mongolia Etuoke Banner Ningxia Yanchi County area between two different soil Class boundaries.