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
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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
M. Fukuda
中科院分区:
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文献类型:
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作者:
L. Lopez;A. Brouchkov;H. Nakayama;F. Takakai;A. Fedorov;M. Fukuda

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在东西伯利亚,“大陆性”盐碱化是由于蒸发量大于降水量以及土壤每年和长期冻融造成的,其特点是碳酸盐和硫酸盐离子普遍存在(Anisimova和Kurchatova,2000年)。活动层含盐量可能表明气候变暖和活动层加深的影响(Wolfe等人,2000年)。仅在雅库特中部就有大约16000个alases,总面积为4400万公顷。现代干扰和最近的气候变化继续导致活跃层加深和年轻的热岩溶洼地的激活,这是由于inter-alas草甸稳定地区的上层地面冰融化造成的(Fedorov和Konstantinov,2003年)。盐度的一般影响是降低植被的生长速率或完全阻止生长,这取决于植被的盐敏感性(Shannon等人,1999年)。本研究的目的是评估长期干扰地区相对于完整森林的活动层中的盐积累,并调查活动层中水和盐的季节性运动。
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.
热岩溶作为短期永久冻土扰动,雅库特中部
DOI: --
发表时间: 2004
期刊: Permafrost Periglacial Processes 15・1
影响因子: --
作者:
A.Brouchkov;M.Fukuda;A.Fedorov;P.Konstantinov;G.Iwahana
通讯作者: G.Iwahana