H2020Индивидуална стипендия2021–2024

FROSTLAND · Impacts of PermaFROST degradation on peatLAND biogeochemistry

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-11-01 → 2024-05-02
Финансиране от ЕС: 178 320 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Разтопяването на вечната мерзлота в арктичните торфенища променя химичния състав на почвата и цикъла на хранителните вещества. Това е важно, защото освобождаването на въглерод от почвата може да увеличи парниковите газове и да ускори глобалното затопляне.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Impacts of PermaFROST degradation on peatLAND biogeochemistry

The degradation of permanently frozen ground (permafrost) has accelerated in subarctic and arctic regions. The southern limit of permafrost distribution has advanced northwards over the last decades, and the degradation has also increased in the northernmost arctic zone. This is expected to persist in the future due to climate warming, which is more notorious in circumpolar regions. Almost half of the world’s soil organic carbon is stored in permafrost, largely in permanently frozen peat (un-decomposed plant material). The degradation of permafrost in peatlands is particularly threatening because it may turn peatlands from carbon sinks to carbon sources and accelerate greenhouse gas emissions and climate change. However, the interdependency between carbon and nutrient cycles is still poorly understood, and needs to be addressed to properly understand the impacts of permafrost thawing on the functioning of peatland ecosystems and their feedback on global climate. FROSTLAND addresses some of these uncertainties. The overall aims are to elucidate the biogeochemical changes occurring in permafrost across gradients of permafrost thaw in subarctic and arctic peatlands and to improve fine- and broader-scale estimates of nutrient availability and of C and nutrient stocks in different global warming scenarios. This information will be crucial for society to improve the accuracy of predictions regarding the impacts of permafrost thaw on global climate.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The degradation of permafrost has accelerated in subarctic and arctic regions. The southern boundary of permafrost distributionhas receded northwards over the last decades, and the degradation has also increased in the arctic zone ofcontinuous permafrost. This process is expected to persist in the future due to climate warming, which is amplified in circumpolar regions. Almost half of the world’s soil organic C is stored in permafrost, largely in permanently frozen peat. The degradation of permafrost in peatlands is particularly threatening because it may turn peatlands from C sinks to C sources and accelerate climate change. However, the coupling between C and nutrient cycles is still poorly understood, and needs to be addressed to properly understand the impacts of permafrost thawing on the functioning of peatland ecosystems and their feedback on global climate. FROSTLAND addresses some of these uncertainties. The overall aims are to elucidate the fine-scale biogeochemical changes occurring in the active layer and in deep permafrost across gradients of permafrost thaw in subarctic and arctic peatlands and to improve fine- and broader-scale estimates of nutrient availability and of C and nutrient stocks in different global warming scenarios. FROSTLAND is based on a detailed research plan that has been accurately designed to address these knowledge gaps. The achievement of these objectives will require the acquisition of new knowledge and skills by the researcher, who will be trained at PLECO (UAntwerp) under the supervision of Prof. Janssens, an expert in soil biogeochemistry. A secondment to the Dept. Physical Geography (Stockholm Univ.) will be supervised by Prof. Hugelius, an expert in modelling and upscaling of C and nutrients in permafrost and peatlands. The work will be based on available datasets collected in permafrost peatlands in previous projects and also on new data acquisition. FROSTLAND is an essential step for the researcher's career success.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITEIT ANTWERPEN · AntwerpenКоординаторБелгия