Rapid Net Carbon Loss From a Whole‐Ecosystem Warmed Peatland
نویسندگان
چکیده
منابع مشابه
Permafrost degradation stimulates carbon loss from experimentally warmed tundra.
A large pool of organic carbon (C) has been accumulating in the Arctic for thousands of years because cold and waterlogged conditions have protected soil organic material from microbial decomposition. As the climate warms this vast and frozen C pool is at risk of being thawed, decomposed, and released to the atmosphere as greenhouse gasses. At the same time, some C losses may be offset by warmi...
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Northern peatlands have accumulated one third of the Earth's soil carbon stock since the last Ice Age. Rapid warming across northern biomes threatens to accelerate rates of peatland ecosystem respiration. Despite compensatory increases in net primary production, greater ecosystem respiration could signal the release of ancient, century- to millennia-old carbon from the peatland organic matter s...
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Around the world, peatland degradation and soil subsidence is occurring where these soils have been converted to agriculture. Since initial drainage in the mid-1800s, continuous farming of such soils in the California Sacramento-San Joaquin Delta (the Delta) has led to subsidence of up to 8 meters in places, primarily due to soil organic matter (SOM) oxidation and physical compaction. Rice (Ory...
متن کاملThe potential of responsible peatland management to reduce global soil carbon loss and greenhouse gas emissions
Peatlands represent the largest single global store of soil carbon. Despite providing a natural long-term CO2 sink, drainage and conversion to agricultural and silivicultural management of peatlands has converted them into large net contributors to global greenhouse gas (GHG) emissions (~2.5% of all anthropogenic emissions, primarily from Europe and SE Asia). Drainage-based agriculture on peatl...
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We quantified the wholesale transformation of the boreal landscape by open-pit oil sands mining in Alberta, Canada to evaluate its effect on carbon storage and sequestration. Contrary to claims made in the media, peatland destroyed by open-pit mining will not be restored. Current plans dictate its replacement with upland forest and tailings storage lakes, amounting to the destruction of over 29...
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ژورنال
عنوان ژورنال: AGU Advances
سال: 2020
ISSN: 2576-604X,2576-604X
DOI: 10.1029/2020av000163