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Holocene land-cover reconstructions for studies on land cover-climate feedbacks

Gaillard, M.-J. ; Sugita, S. ; Mazier, Florence LU ; Kaplan, J.O. ; Trondman, A.-K. ; Broström, Anna LU ; Hickler, Thomas LU ; Kjellström, E. ; Punes, P. and Lemmen, C. , et al. (2010) In Climate of the Past 6(4). p.483-499
Abstract
The major objectives of this paper are: (1) to review the pros and cons of the scenarios of past anthropogenic land cover change (ALCC) developed during the last ten years, (2) to discuss issues related to pollen-based reconstruction of the past land-cover and introduce a new method, REVEALS (Regional Estimates of VEgetation Abundance from Large Sites), to infer long-term records of past land-cover from pollen data, (3) to present a new project (LANDCLIM: LAND cover - CLIMate interactions in NW Europe during the Holocene) currently underway, and show preliminary results of REVEALS reconstructions of the regional land-cover in the Czech Republic for five selected time windows of the Holocene, and (4) to discuss the implications and future... (More)
The major objectives of this paper are: (1) to review the pros and cons of the scenarios of past anthropogenic land cover change (ALCC) developed during the last ten years, (2) to discuss issues related to pollen-based reconstruction of the past land-cover and introduce a new method, REVEALS (Regional Estimates of VEgetation Abundance from Large Sites), to infer long-term records of past land-cover from pollen data, (3) to present a new project (LANDCLIM: LAND cover - CLIMate interactions in NW Europe during the Holocene) currently underway, and show preliminary results of REVEALS reconstructions of the regional land-cover in the Czech Republic for five selected time windows of the Holocene, and (4) to discuss the implications and future directions in climate and vegetation/land-cover modeling, and in the assessment of the effects of human-induced changes in land-cover on the regional climate through altered feedbacks. The existing ALCC scenarios show large discrepancies between them, and few cover time periods older than AD 800. When these scenarios are used to assess the impact of human land-use on climate, contrasting results are obtained. It emphasizes the need for methods such as the REVEALS model-based land-cover reconstructions. They might help to fine-tune descriptions of past land-cover and lead to a better understanding of how long-term changes in ALCC might have influenced climate. The REVEALS model is demonstrated to provide better estimates of the regional vegetation/land-cover changes than the traditional use of pollen percentages. This will achieve a robust assessment of land cover at regional- to continental-spatial scale throughout the Holocene. We present maps of REVEALS estimates for the percentage cover of 10 plant functional types (PFTs) at 200 BP and 6000 BP, and of the two open-land PFTs 'grassland' and 'agricultural land' at five time-windows from 6000 BP to recent time. The LANDCLIM results are expected to provide crucial data to reassess ALCC estimates for a better understanding of the land suface-atmosphere interactions. (Less)
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type
Contribution to journal
publication status
published
subject
keywords
CARBON-CYCLE, QUANTITATIVE RECONSTRUCTION, SOUTHERN SWEDEN, TERRESTRIAL ECOSYSTEMS, POLLEN-REPRESENTATION, REGIONAL VEGETATION, SIMULATION APPROACH, EUROPEAN CLIMATE, PAST VEGETATION, GLACIAL-MAXIMUM
in
Climate of the Past
volume
6
issue
4
pages
17 pages
publisher
Copernicus GmbH
external identifiers
  • wos:000281433300007
  • scopus:77955071007
ISSN
1814-9332
DOI
10.5194/cp-6-483-2010
language
English
LU publication?
yes
id
936c997d-608b-490f-b476-fa37d27552ad (old id 1566870)
date added to LUP
2016-04-01 10:38:41
date last changed
2022-04-20 03:52:09
@article{936c997d-608b-490f-b476-fa37d27552ad,
  abstract     = {{The major objectives of this paper are: (1) to review the pros and cons of the scenarios of past anthropogenic land cover change (ALCC) developed during the last ten years, (2) to discuss issues related to pollen-based reconstruction of the past land-cover and introduce a new method, REVEALS (Regional Estimates of VEgetation Abundance from Large Sites), to infer long-term records of past land-cover from pollen data, (3) to present a new project (LANDCLIM: LAND cover - CLIMate interactions in NW Europe during the Holocene) currently underway, and show preliminary results of REVEALS reconstructions of the regional land-cover in the Czech Republic for five selected time windows of the Holocene, and (4) to discuss the implications and future directions in climate and vegetation/land-cover modeling, and in the assessment of the effects of human-induced changes in land-cover on the regional climate through altered feedbacks. The existing ALCC scenarios show large discrepancies between them, and few cover time periods older than AD 800. When these scenarios are used to assess the impact of human land-use on climate, contrasting results are obtained. It emphasizes the need for methods such as the REVEALS model-based land-cover reconstructions. They might help to fine-tune descriptions of past land-cover and lead to a better understanding of how long-term changes in ALCC might have influenced climate. The REVEALS model is demonstrated to provide better estimates of the regional vegetation/land-cover changes than the traditional use of pollen percentages. This will achieve a robust assessment of land cover at regional- to continental-spatial scale throughout the Holocene. We present maps of REVEALS estimates for the percentage cover of 10 plant functional types (PFTs) at 200 BP and 6000 BP, and of the two open-land PFTs 'grassland' and 'agricultural land' at five time-windows from 6000 BP to recent time. The LANDCLIM results are expected to provide crucial data to reassess ALCC estimates for a better understanding of the land suface-atmosphere interactions.}},
  author       = {{Gaillard, M.-J. and Sugita, S. and Mazier, Florence and Kaplan, J.O. and Trondman, A.-K. and Broström, Anna and Hickler, Thomas and Kjellström, E. and Punes, P. and Lemmen, C. and Olofsson, Jörgen and Smith, Benjamin and Strandberg, G. and Kokfelt, Ulla and Miller, Paul and Poska, Anneli and Rundgren, Mats and Barnekow, Lena}},
  issn         = {{1814-9332}},
  keywords     = {{CARBON-CYCLE; QUANTITATIVE RECONSTRUCTION; SOUTHERN SWEDEN; TERRESTRIAL ECOSYSTEMS; POLLEN-REPRESENTATION; REGIONAL VEGETATION; SIMULATION APPROACH; EUROPEAN CLIMATE; PAST VEGETATION; GLACIAL-MAXIMUM}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{483--499}},
  publisher    = {{Copernicus GmbH}},
  series       = {{Climate of the Past}},
  title        = {{Holocene land-cover reconstructions for studies on land cover-climate feedbacks}},
  url          = {{http://dx.doi.org/10.5194/cp-6-483-2010}},
  doi          = {{10.5194/cp-6-483-2010}},
  volume       = {{6}},
  year         = {{2010}},
}