Suprapermafrost Horizons of the Accumulation of Raw Organic Matter in Tundra Cryozems of Northern Yakutia
Suprapermafrost Horizons of the Accumulation of Raw Organic Matter in Tundra Cryozems of Northern Yakutia
复制标题
雅库特北部苔原冰冻土中原始有机物积累的超冻土层
DOI：
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发表时间：
2018
影响因子：
1.4
通讯作者：
A. V. Lupachev
中科院分区：
文献类型：
--
作者：
S. V. Gubin;A. V. Lupachev
雅库特北方冻原中发育的冻土（含氧浊积土）剖面中，在浅活动层条件下，形成了原始有机质积累的永冻土层。考虑到它们的成因、在土壤剖面中稳定而规则的位置、与上覆土层和相邻土壤剖面的共生关系以及一系列特征和性质，这些土层可被划分为一种新的成因土层类型--有机矿物累积性超冻土层（CRO）。其质量组成（材料中有机物和矿物质的比例）可以在较低的水平上反映出来。关于俄罗斯新土壤分类系统框架内新发生层的分离，可以建立一种新的土壤发生类型--永久冻土层上积累原始有机质的冰冻土壤（永久冻土层上有机累积冰冻土壤）。其诊断剖面具有以下层位：（O，AO，T）-CR-CRO-CRIC。
In the profiles of cryozems (Oxyaquic Turbic Cryosols) developing in tundra of northern Yakutia under conditions of shallow active layer, suprapermafrost horizons of the accumulation of raw organic matter are formed. Taking into account their genesis, stable and regular position in the soil profile, paragenetic links with the overlying horizons and neighboring soil profiles, and a set of diagnostic features and properties, these horizons can be separated as a new type of genetic soil horizons—the organomineral accumulative suprapermafrost horizon (CRO). Its qualitative composition (the ratio of organic and mineral matter in the material) can be reflected at a lower level. In relation to the separation of the new genetic horizon within the framework of the new Russian soil classification system, a new genetic types of soils—cryozem with suprapermafrost accumulation of raw organic matter (suprapermafrost organo-accumulative cryozem)—can be established. Its diagnostic profile has the following horizonation: (O, AO, T)–CR–CRO–┬C.