Salt and water movement in a Forest-Alas ecosystem in Central Yakutia, Eastern Siberia
Salt and water movement in a Forest-Alas ecosystem in Central Yakutia, Eastern Siberia
复制标题
东西伯利亚中部雅库特森林-阿拉斯生态系统中的盐和水运动
DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
M. Fukuda
中科院分区:
文献类型:
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作者:
L. Lopez;A. Brouchkov;H. Nakayama;F. Takakai;A. Fedorov;M. Fukuda
In Eastern Siberia, “continental” salinization is caused by predominance of evaporation above precipitation as well as the annual and long-term freezing and thawing of soil, and is characterized by a prevalence of carbonate and sulphate ions (Anisimova and Kurchatova, 2000). Active layer salt content may indicate the impact of climate warming and active layer deepening (Wolfe et al., 2000). In Central Yakutia alone there are about 16000 alases with a total area of 44 million ha. Modern disturbances and recent climatic changes continue to cause active layer deepening and activation of young thermokarsts depressions by the thawing of upper ground ice on stable areas of inter-alas meadows (Fedorov and Konstantinov, 2003). The general effect of salinity is to reduce the growth rate of vegetation or prevent growth entirely, depending on the salt-sensitivity of the vegetation (Shannon et al., 1999). The aims of this study are to assess salt accumulation in the active layer of long disturbed areas relative to intact forest, and to investigate the seasonal movement of water and salts in the active layer.
DOI:
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发表时间:
2004
期刊:
Permafrost Periglacial Processes 15・1
影响因子:
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作者:
A.Brouchkov;M.Fukuda;A.Fedorov;P.Konstantinov;G.Iwahana
通讯作者:
G.Iwahana