The Role of Frost Boils in the Development of Cryozems on Coastal Lowlands of Northern Yakutia

被引:11
|
作者
Gubin, S. V. [1 ]
Lupachev, A. V. [1 ]
机构
[1] Russian Acad Sci, Inst Physicochem & Biol Problems Soil Sci, Ul Inst Skaya 2, Pushchino 142290, Moscow Oblast, Russia
基金
俄罗斯基础研究基金会;
关键词
cryozem; Turbic Cryosol; permafrost; cryoturbation; suprapermafrost accumulative horizons; C-14; age; SOIL FORMATION;
D O I
10.1134/S1064229317110072
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
The influence of frost boils on the development of cryozems (Turbic Cryosols) in the tundra zone of northern Yakutia is discussed. Mechanisms of the input, redistribution, and transformation of raw organic matter with its accumulation in the deep part of the profile of cryozems are elucidated. As a result, specific organomineral or organic horizons are formed above the permafrost table. The development of cryozems has a cyclic pattern: from the stage of barren frost boil to the stage of mature soil profile. However, this cycle can be interrupted at any stage of overgrowing of the barren surface of frost boil. The rates of overgrowing and the formation of the profile of cryozem, and the C-14 age of organic matter accumulated in the organomineral suprapermafrost horizons are estimated.
引用
收藏
页码:1243 / 1254
页数:12
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