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Climate and grazing influences on dynamics of arctic tundra vegetation and implications for permafrost

机译：关于北极苔原植被动态的气候和放牧影响与永久冻土的影响

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Numerous observations of the arctic tundra over time, using both field and remotely sensed methodologies, have indicated that the aboveground component of tundra vegetation has been increasing since at least the middle of the twentieth century. At the circumpolar scale, the greening of the northern high latitudes and the arctic tundra specifically has been observed with remotely sensed data for some time [e.g. Myneni et al. 1997], and more recent studies have noted the continuation of this trend [Bunn et al. 2007, Bhatt et al. 2010]. Bhatt et al. [2010] examined the link between sea-ice decline and tundra vegetation increases. They found a nearly ubiquitous greening of the near-coastal tundra, in both the maximum NDVI and the seasonally-integrated NDVI, with some decline in the Bering and West Chukchi regions. Interestingly, the tundra vegetation of North America appears to be greening to a greater extent than that of Eurasia [Bhatt et al. 2010].
机译：随着时间的推移，使用这两个领域和远程感测方法的许多观察结果表明，自二十世纪中叶以来，苔原植被的地上成分一直在增加。在Circumpolar刻度下，北方高纬度和北极苔原的绿化明确地观察了一段时间的远程感测数据[例如Myneni等人。 1997年]，最近的研究已经注意到这一趋势的延续[Bunn等人。 2007年，Bhatt等人。 2010。 Bhatt等人。 [2010]审查了海冰下降和苔原植被之间的联系。他们发现了近沿海苔原的几乎普遍的绿化，在最大的NDVI和季节性综合的NDVI中，在白天和西葫芦地区有一些下降。有趣的是，北美的苔原植被似乎在更大程度上比欧亚人更大的绿色[Bhatt等人。 2010。

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