“岛屿”草原与东北亚气候大陆性。

IF 3 3区 地球科学 Q2 BIOPHYSICS
Arkady V Alfimov, Daniil J Berman
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引用次数: 0

摘要

更新世冻生草原时期和现代东北亚气候的表现与气候的高度大陆性有关。过去和现代孤立草原中心的草原景观分布与气候大陆性的关联程度和方式尚未得到具体研究。本文以邻近河流上游的英迪吉卡河和科利马河流域为模型。在第一个盆地中,在冻土落叶松和西伯利亚矮松群落的背景下,山谷南坡的草原群落在景观中占有重要地位。在科雷马河上游及更远的北部、东部和南部,草原群落面积、草原植物和无脊椎动物的多样性急剧减少。温度状态、湿度和气候大陆性指数的28个特征比较表明,上述地区之间的差异只有在冬季是可靠的和实质性的。不能排除茵迪吉卡河上游草原群落的广泛分布受到气候以外因素的影响,例如该领土独特的生物地球化学特征。大陆性的季节指标分析可能被证明是理解东北亚过去苔原草原主导的气候原因的一个重要因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
"Island" steppes and climate continentality Northeast Asia.

Representations of Pleistocene cryophyte steppe periods as well as of the climate of modern Northeast Asia are associated with high continentality of climate. To what extent and in what way the distribution of steppe landscapes in the past and modern isolated steppe centers is associated with climate continentality has not been specifically studied yet. In this paper, the basins of the upper reaches of neighboring rivers, the Indigirka and Kolyma, are considered as a model. In the first basin steppe communities on the southern slopes of the valleys occupy an important place in the landscape, on a background of permafrost larch and Siberian dwarf pine communities. In the upper Kolyma River and further north, east and south, the area of steppe communities and diversity of steppe plants and invertebrates decreases sharply. A comparison of 28 characteristics of temperature regime, humidity and climate continentality indices revealed that the differences between the aforementioned regions are reliable and substantial only in winter. It cannot be excluded that the extensive distribution of steppe associations in the headwaters of the Indigirka is influenced by factors other than climate, such as the distinctive biogeochemical characteristics of the territory. The analysis of seasonal indicators of continentality may prove to be an important factor in the understanding of the climatic causes of past tundra-steppe dominance in the Northeast Asia.

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来源期刊
CiteScore
6.40
自引率
9.40%
发文量
183
审稿时长
1 months
期刊介绍: The Journal publishes original research papers, review articles and short communications on studies examining the interactions between living organisms and factors of the natural and artificial atmospheric environment. Living organisms extend from single cell organisms, to plants and animals, including humans. The atmospheric environment includes climate and weather, electromagnetic radiation, and chemical and biological pollutants. The journal embraces basic and applied research and practical aspects such as living conditions, agriculture, forestry, and health. The journal is published for the International Society of Biometeorology, and most membership categories include a subscription to the Journal.
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