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Arctic plants are getting taller due to climate change ̵

整理: AG88时间: 2018-10-08

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Throughout the southern reaches of the 搜狐体育Arctic, plants are getting taller due to climate change.

The common freckle pelt lichen (Peltigera aphthosa) is often found on mossy ground, rocks, or under trees in Arctic ecosystems.
Image credits James Walton / NPS.

While not graced with the lush vegetation of the Earth’s other areas, the Arctic is far from desolate. Hundreds of species of low-lying shrubs, grasses, and other plants make a home in the frigidAAApanse, and they play a key role in the carbon cycle. However, anthropic climate change is causing new plants to move into the Arctic’s southern stretches which, according to a new paper, can lead to quite a bit of hassle in the future.

Growing (too) strong

An international team of 130 researchers, led by Dr Isla Myers-Smith of the School of Geosciences at the University of Edinburgh, and Dr Anne Bjorkman from the Senckenberg Biodiversity and Climate Research Centre (BiK-F) in Frankfurt, has been investigating the Arctic flora as part of a Natural Environment Research Council (NERC)-funded project.

The team looked at more than 60,000 data points from hundreds of sites across the Arctic and alpine tundra and report that higher mean temperatures are impacting the delicate balance of these ecosystems. This is the first time that a biome-scale study looking at the role plants play in this rapidly-warming part of the planet has been carried out, says Bjorkman.

“Rapid climate warming in the Arctic and alpine regions is driving changes in the structure and composition of plant communities, with important consequences for how this vast and sensitive ecosystem functions,” Dr Bjorkman adds.

“Arctic regions have long been a focus for climate change research, as the permafrost lying under the northern latitudes contains 30 to 50 percent of the world’s soil carbon”.

Among other things, plants insulate the soil they grow in from incoming sunlight. While this is rather fortunate for us during a hot summer’s day, in the Arctic, it’s a matter of ecosystem stability. Taller plants also help to trap more snow beneath their leaves. This thicker blanket of snow, in turn, further insulates the soil from temperature changes in the atmosphere, preventing it from freezing.

本文源自: 揭秘环亚娱乐骗局

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