Cited by 659Land Use and Ecosystem ServicesGeology and Paleoclimatology ResearchClimate variability and models

Holocene carbon emissions as a result of anthropogenic land cover change

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Kaplan, Jed O., Krumhardt, Kristen M., Ellis, Erle C., Ruddiman, William F., Lemmen, Carsten, Goldewijk, Kees Klein·2011·The Holocene

Abstract

Humans have altered the Earth’s land surface since the Paleolithic mainly by clearing woody vegetation first to improve hunting and gathering opportunities, and later to provide agricultural cropland. In the Holocene, agriculture was established on nearly all continents and led to widespread modification of terrestrial ecosystems. To quantify the role that humans played in the global carbon cycle over the Holocene, we developed a new, annually resolved inventory of anthropogenic land cover change from 8000 years ago to the beginning of large-scale industrialization (ad 1850). This inventory is based on a simple relationship between population and land use observed in several European countries over preindustrial time. Using this data set, and an alternative scenario based on the HYDE 3.1 land use data base, we forced the LPJ dynamic global vegetation model in a series of continuous simulations to evaluate the impacts of humans on terrestrial carbon storage during the preindustrial Holocene. Our model setup allowed us to quantify the importance of land degradation caused by repeated episodes of land use followed by abandonment. By 3 ka BP, cumulative carbon emissions caused by anthropogenic land cover change in our new scenario ranged between 84 and 102 Pg, translating to c. 7 ppm of atmospheric CO 2 . By ad 1850, emissions were 325–357 Pg in the new scenario, in contrast to 137–189 Pg when driven by HYDE. Regional events that resulted in local emissions or uptake of carbon were often balanced by contrasting patterns in other parts of the world. While we cannot close the carbon budget in the current study, simulated cumulative anthropogenic emissions over the preindustrial Holocene are consistent with the ice core record of atmospheric δ 13 CO 2 and support the hypothesis that anthropogenic activities led to the stabilization of atmospheric CO 2 concentrations at a level that made the world substantially warmer than it otherwise would be.

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  • Human use of land causes major global changes in biodiversity, biogeochemistry, geomorphic processes, and climate.

    “Human populations and their use of land have now transformed ecosystem pattern and process across most of the terrestrial biosphere (1, 2), causing major global changes in biodiversity (3), biogeochemistry (4–6), geomorphic processes (7), and climate (8).”

    From Used planet: a global history (2013) · cites this paper as [4]

  • KK10 predicts land use from population data using empirically derived nonlinear relationships with population density.

    “The KK10 model (Figs. 1B and 2 B and D) (4) predicts land use from population data using empirically derived nonlinear relationships with population density.”

    From Used planet: a global history (2013) · cites this paper as [4]

  • There are significant differences in the land-use definitions of different models, with HYDE focusing exclusively on cultivated, pasture, and urban areas, and KK10 on land use more generally, including shifting cultivation and forest harvest along with agricultural land use.

    “there are significant differences in the land-use definitions of different models, with HYDE focusing exclusively on cultivated, pasture, and urban areas, and KK10 on land use more generally, including shifting cultivation and forest harvest along with agricultural land use.”

    From Used planet: a global history (2013) · cites this paper as [4]

  • In KK10, low-density populations with high per-capita land use first expand to fill all usable land and then intensify land use as population densities increase over time.

    “In this model, low-density populations with high per-capita land use first expand to fill all usable land and then intensify land use (use less land per capita) as population densities increase over time.”

    From Used planet: a global history (2013) · cites this paper as [4]

  • Hypotheses relating human activity to historical climate change have yet to be tested rigorously under the full range of plausible historical conditions.

    “As a result, hypotheses relating human activity to historical climate change have yet to be tested rigorously under the full range of plausible historical conditions (4, 24).”

    From Used planet: a global history (2013) · cites this paper as [4]

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Research works printed but not linked: 1

  1. Grove AT and Rackham O (2001b) The Nature of Mediterranean Europe: An Ecological History . New Haven and London: Yale University Press.

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Authors
Kaplan, J. O., Krumhardt, K. M., Ellis, E. C., Ruddiman, W. F., Lemmen, C., & Goldewijk, K. K.
Affiliations
  • École Polytechnique Fédérale de Lausanne (CH)
  • University of Maryland, Baltimore County (US)
  • University of Virginia (US)
  • Institut für Küstenforschung, Germany
  • Netherlands Environmental Assessment Agency (NL)
Corresponding author
Kaplan, Jed O.
Venue
The Holocene
Published
2010-12-30
Volume
21
Issue
5
Pages
775-791
ISSN
  • 0959-6836 (ISSN-L)
  • 1477-0911
OpenAlex
W2075746856
Cited by
659
References
99
Citations by year
2026: 30 · 2025: 34 · 2024: 47 · 2023: 53 · 2022: 61 · 2021: 66 · 2020: 50 · 2019: 34 · 2018: 48 · 2017: 39 · 2016: 35 · 2015: 55 · 2014: 39 · 2013: 37 · 2012: 18
FWCI
19.52
Type
journal article
Language
en
Open access
Locations
  • The Holocene (publishedVersion)
  • Helmholtz-Zentrum Geesthacht Zentrum für Materialforschung und kustenforschung (The Helmholtz Center Geesthacht) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • OPUS (Augsburg University) (submittedVersion)
Funders
  • National Science Foundation
  • Deutsche Forschungsgemeinschaft
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (119049)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Land Use and Ecosystem Services
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
Keywords
anthropogenic land cover change, Holocene, CO2 emissions, terrestrial carbon storage, land use history, land degradation, land abandonment, atmospheric CO2 stabilization

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