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RESEARCH PRODUCT
Holocene land-cover reconstructions for studies on land cover-climate feedbacks
Anne Birgitte NielsenKari Loe HjellePaul A. MillerAnna-kari TrondmanLeif BjörkmanLaimdota KalninaH. Von StedingkUlf SegerströmThomas HicklerBenjamin SmithSm PeglarMats RundgrenUlla KokfeltRalph FyfePer LageråsGustav StrandbergHeikki SeppäHarry John Betteley BirksMałgorzata LatałowaThomas GieseckeBent Vad OdgaardAnne E. BjuneMatts LindbladhL. BalakauskasMichelle LeydetAnna BroströmFlorence MazierFlorence MazierCarsten LemmenW.o. Van Der KnaapMarie-josé GaillardJörgen OlofssonLena BarnekowAnneli PoskaTiiu KoffShinya SugitaJutta LechterbeckMihkel KangurJed O. KaplanPetr KunešTeija AleniusErik Kjellströmsubject
010504 meteorology & atmospheric sciencesStratigraphyREGIONAL VEGETATION01 natural sciencesAgricultural landAbundance (ecology)ddc:551new project LANDCLIMddc:550land-cover changelcsh:TD169-171.8GLACIAL-MAXIMUMHolocenelcsh:Environmental scienceslcsh:GE1-350ClimatologyGlobal and Planetary ChangeSOUTHERN SWEDENGeologyLast Glacial MaximumVegetation[SHS.GEO]Humanities and Social Sciences/GeographyPOLLEN-REPRESENTATIONClimatologyLANDCLIMlcsh:TD172-193.5GeologiTerrestrial ecosystemCARBON-CYCLEland cover-climate feedbacks010506 paleontology117 Geography Environmental scienceslcsh:Environmental protectioneducationAnnan geovetenskap och miljövetenskapLand coverLand cover changelcsh:Environmental pollutionREVEALSSIMULATION APPROACH0105 earth and related environmental sciencesEUROPEAN CLIMATEHolocenePaleontology15. Life on landQUANTITATIVE RECONSTRUCTIONPAST VEGETATIONNW EuropeTERRESTRIAL ECOSYSTEMSEarth sciences13. Climate actionPaleoecologyOther Earth and Related Environmental Sciencesdescription
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/landcover 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. NordForsk LANDCLIM VR LANDCLIM MERGE
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-07-26 |