Read Full Article (file size: 105519 bytes)    Cited by

GLOBAL BIOGEOCHEMICAL CYCLES, VOL. 17, NO. 2, 1049, doi:10.1029/2001GB001848, 2003

CO₂ emissions from liming of agricultural soils in Brazil

Martial Bernoux

Carbon Sequestration, Institut de Recherche pour le Développement, Piracicaba, Brazil

Boris Volkoff

Carbon Sequestration, Institut de Recherche pour le Développement, Piracicaba, Brazil

Maria da Conceição S. Carvalho

Empresa Brasileira de Pesquisa Agropecuaria-Algodão, Núcleo de Goiânia, Brazil

Carlos C. Cerri

Biogeoquímica Ambiental, Centro de Energia Nuclear na Agricultura, Piracicaba, Brazil

Abstract

This paper presents a first estimation of net CO₂ fluxes from liming of agricultural soils in Brazil for the period 1990–2000. The calculation was based on the methodology proposed by the IPCC, but separately conducted for the five administrative Brazilian regions. The summarized annual CO₂ emission for Brazil varied from 4.9 to 9.4 Tg CO₂ yr⁻¹ with a mean CO₂ emission of about 7.2 Tg CO₂ yr⁻¹. The South, Southeast and Center region accounted for a least 92% of total emission. Neglecting the emissions from organic soils, the CO₂ fluxes from soils (reported under the category 5-D in the National Inventories of Greenhouse Gas Emission) amounted an updated value of around 51.9 Tg CO₂ yr⁻¹ for the period 1975–1995. Uncertainties, projection and other correlated fluxes related with liming are briefly discussed.

Received 11 December 2001; accepted 13 February 2003; published 15 May 2003.

Index Terms: 1615 Global Change: Biogeochemical processes (4805); 1699 Global Change: General or miscellaneous; 9360 Information Related to Geographic Region: South America.

Read Full Article (file size: 105519 bytes)    Cited by

Citation: Bernoux, M., B. Volkoff, M. da C. S. Carvalho, and C. C. Cerri (2003), CO₂ emissions from liming of agricultural soils in Brazil, Global Biogeochem. Cycles, 17(2), 1049, doi:10.1029/2001GB001848.

Copyright 2003 by the American Geophysical Union.