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The uncertain climate footprint of wetlands under human pressure
- Source :
- Proceedings of the National Academy of Sciences of the United States of America (PNAS), Proceedings of the National Academy of Sciences of the United States of America, 112(15), 4594-4599, Proceedings of the National Academy of Sciences of the United States of America 112 (2015) 15, Proceedings of the National Academy of Sciences of the United States of America, 112(15), 4594-4599. National Acad Sciences, Proceedings of the National Academy of Sciences of the United States of America, vol 112, iss 15, Petrescu, A M R, Lohila, A, Tuovinen, J P, Baldocchi, D D, Desai, A R, Roulet, N T, Vesala, T, Dolman, A J, Oechel, W C, Marcolla, B, Friborg, T, Rinne, J, Matthes, J H, Merbold, L, Meijide, A, Kiely, G, Sottocornola, M, Sachs, T, Zona, D, Varlagin, A, Lai, D Y F, Veenendaal, E, Parmentier, F J W, Skiba, U, Lund, M, Hensen, A & van Huissteden, J 2015, ' The uncertain climate footprint of wetlands under human pressure ', Proceedings of the National Academy of Sciences of the United States of America, vol. 112, no. 15, pp. 4594-4599 . https://doi.org/10.1073/pnas.1416267112, Petrescu, A M R, Lohila, A, Tuovinen, J-P, Baldocchi, D D, Desai, A R, Roulet, N T, Vesala, T, Dolman, A J, Oechel, W C, Marcolla, B, Friborg, T, Rinne, J, Matthes, J H, Merbold, L, Meijide, A, Kiely, G, Sottocornola, M, Sachs, T, Zona, D, Varlagin, A, Lai, D Y F, Veenendaal, E, Parmentier, F-J W, Skiba, U, Lund, M, Hensen, A, Van Huissteden, J, Flanagan, L B, Shurpali, N J, Grunwald, T, Humphreys, E R, Jackowicz-Korczynski, M, Aurela, M A, Laurila, T, Gruning, C, Corradi, C A R, Schrier-Uijl, A P, Christensen, T R, Tamstorf, M P, Mastepanov, M, Martikainen, P J, Verma, S B, Bernhofer, C & Cescatti, A 2015, ' The uncertain climate footprint of wetlands under human pressure ', Proceedings of the National Academy of Sciences of the United States of America, vol. 112, no. 15, pp. 4594-4599 . https://doi.org/10.1073/pnas.1416267112, Petrescu, A M R, Lohila, A, Tuovinen, J-P, Baldocchi, D D, Desai, A R, Roulet, N T, Vesala, T, Dolman, A J, Oechel, W C, Marcolla, B, Friborg, T, Rinne, J, Matthes, J H, Merbold, L, Meijide, A, Kiely, G, Sottocornola, M, Sachs, T, Zona, D, Varlagin, A, Lai, D Y F, Veenendaal, E, Parmentier, F-J W, Skiba, U, Lund, M, Hensen, A, van Huissteden, J, Flanagan, L B, Shurpali, N J, Grünwald, T, Humphreys, E R, Jackowicz-Korczyński, M, Aurela, M A, Laurila, T, Grüning, C, Corradi, C A R, Schrier-Uijl, A P, Christensen, T R, Tamstorf, M P, Mastepanov, M, Martikainen, P J, Verma, S B, Bernhofer, C & Cescatti, A 2015, ' The uncertain climate footprint of wetlands under human pressure ', Proceedings of the National Academy of Sciences of the United States of America, vol. 112, no. 15, pp. 4594-4599 . https://doi.org/10.1073/pnas.1416267112
- Publication Year :
- 2015
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Abstract
- Significant climate risks are associated with a positive carbon-temperature feedback in northern latitude carbon-rich ecosystems, making an accurate analysis of human impacts on the net greenhouse gas balance of wetlands a priority. Here, we provide a coherent assessment of the climate footprint of a network of wetland sites based on simultaneous and quasi-continuous ecosystem observations of CO2 and CH4 fluxes. Experimental areas are located both in natural and in managed wetlands and cover a wide range of climatic regions, ecosystem types, and management practices. Based on direct observations we predict that sustained CH4 emissions in natural ecosystems are in the long term (i.e., several centuries) typically offset by CO2 uptake, although with large spatiotemporal variability. Using a space-for-time analogy across ecological and climatic gradients, we represent the chronosequence from natural to managed conditions to quantify the "cost" of CH4 emissions for the benefit of net carbon sequestration. With a sustained pulse-response radiative forcing model, we found a significant increase in atmospheric forcing due to land management, in particular for wetland converted to cropland. Our results quantify the role of human activities on the climate footprint of northern wetlands and call for development of active mitigation strategies for managed wetlands and new guidelines of the Intergovernmental Panel on Climate Change (IPCC) accounting for both sustained CH4 emissions and cumulative CO2 exchange.
- Subjects :
- Peat
Climate
Nitrous Oxide
Wetland
Carbon sequestration
Theoretical
Models
SDG 13 - Climate Action
Human Activities
wetland conversion
Multidisciplinary
geography.geographical_feature_category
Ecology
Geography
methane
Temperature
Uncertainty
dynamics
Plants
PE&RC
fluxes
Plant Production Systems
Physical Sciences
Plantenecologie en Natuurbeheer
Wetland conversion
Climate footprint
Methane
drainage
Life on Land
methane emissions
Climate Change
Radiative forcing
Land management
Climate change
Plant Ecology and Nature Conservation
carbon-dioxide
Settore BIO/07 - ECOLOGIA
Humans
Ecosystem
peatlands
ecosystem
geography
radiative forcing
cycle
variability
carbon dioxide
balance
15. Life on land
Carbon Dioxide
Models, Theoretical
Climate Action
13. Climate action
Plantaardige Productiesystemen
Wetlands
Environmental science
Water resource management
Subjects
Details
- ISSN :
- 10916490 and 00278424
- Volume :
- 112
- Issue :
- 15
- Database :
- OpenAIRE
- Journal :
- Proceedings of the National Academy of Sciences of the United States of America
- Accession number :
- edsair.doi.dedup.....d4308e3b2ff60248a16d8599840ea642