Changes in organic carbon stocks upon land use conversion in the Brazilian Cerrado: A review. Agriculture

L. Batlle-Bayer, N.H. Batjes, P.S. Bindraban

Research output: Contribution to journalArticleAcademicpeer-review

132 Citations (Scopus)

Abstract

This paper reviews current knowledge on changes in carbon stocks upon land use conversion in the Brazilian Cerrado. First, we briefly characterize the savanna ecosystem and summarize the main published data on C stocks under natural conditions. The effects of increased land use pressure in the Cerrado and current uncertainties of estimations of changes in land cover and land use are reviewed next. Thereafter, we focus on soil organic carbon (SOC) dynamics due to changes in land use, particularly conversion to pastures and soybean-based cropping systems, and effects of management practices such as soil fertilization, crop rotations and tillage practices. Most studies considered here suggest that more intensive agriculture, which include no-till practices and the implementation of best or recommended management practices (RMP), reduces SOC losses after land use conversion from conventional tillage-based, monocropping systems; however, these studies focussed on the first 0.3 m of soil, or less, and seldom considered full carbon accounting. To better estimate possible global warming mitigation with agriculture in the Cerrado more comprehensive studies are needed that analyse fluxes of the biogenic greenhouse gases (GHG; CO2, N2O and CH4) to determine the net global warming potential (GWP). Follow up studies should include the application of an integrated modelling system, comprised of a Geographic Information System (GIS) linked to dynamic modelling tools, to analyse SOC dynamics and make projections for possible changes in net C flows in the Cerrado region upon defined changes in soil use and management
Original languageEnglish
Pages (from-to)47-58
JournalAgriculture, Ecosystems and Environment
Volume137
Issue number1-2
DOIs
Publication statusPublished - 2010

Fingerprint

cerrado
carbon sinks
land use
organic carbon
soil organic carbon
agriculture
global warming
tillage
management practice
soil
continuous cropping
intensive farming
greenhouse gases
nitrous oxide
conventional tillage
land cover
intensive agriculture
geographic information systems
land use change
methane

Keywords

  • clay loam acrisol
  • soil carbon
  • cropping systems
  • no-tillage
  • long-term
  • southern brazil
  • spatial heterogeneity
  • grassland management
  • tropical agriculture
  • vegetation gradient

Cite this

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abstract = "This paper reviews current knowledge on changes in carbon stocks upon land use conversion in the Brazilian Cerrado. First, we briefly characterize the savanna ecosystem and summarize the main published data on C stocks under natural conditions. The effects of increased land use pressure in the Cerrado and current uncertainties of estimations of changes in land cover and land use are reviewed next. Thereafter, we focus on soil organic carbon (SOC) dynamics due to changes in land use, particularly conversion to pastures and soybean-based cropping systems, and effects of management practices such as soil fertilization, crop rotations and tillage practices. Most studies considered here suggest that more intensive agriculture, which include no-till practices and the implementation of best or recommended management practices (RMP), reduces SOC losses after land use conversion from conventional tillage-based, monocropping systems; however, these studies focussed on the first 0.3 m of soil, or less, and seldom considered full carbon accounting. To better estimate possible global warming mitigation with agriculture in the Cerrado more comprehensive studies are needed that analyse fluxes of the biogenic greenhouse gases (GHG; CO2, N2O and CH4) to determine the net global warming potential (GWP). Follow up studies should include the application of an integrated modelling system, comprised of a Geographic Information System (GIS) linked to dynamic modelling tools, to analyse SOC dynamics and make projections for possible changes in net C flows in the Cerrado region upon defined changes in soil use and management",
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Changes in organic carbon stocks upon land use conversion in the Brazilian Cerrado: A review. Agriculture. / Batlle-Bayer, L.; Batjes, N.H.; Bindraban, P.S.

In: Agriculture, Ecosystems and Environment, Vol. 137, No. 1-2, 2010, p. 47-58.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

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