Soil carbon stock estimations: methods and a case study of the Maranhão State, Brazil

Telmo José Mendes, Diego Silva Siqueira, Eduardo Barretto Figueiredo, Ricardo de Oliveira Bordonal, Mara Regina Moitinho (), José Marques Júnior and Newton La Scala
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Telmo José Mendes: Federal University of Maranhão (UFMA)
Diego Silva Siqueira: Universidade Estadual Paulista (FCAV-UNESP)
Eduardo Barretto Figueiredo: Federal University of São Carlos (UFSCar)
Ricardo de Oliveira Bordonal: Brazilian Center for Research in Energy and Materials (CNPEM)
Mara Regina Moitinho: Brazilian Center for Research in Energy and Materials (CNPEM)
José Marques Júnior: Universidade Estadual Paulista (FCAV-UNESP)
Newton La Scala: Universidade Estadual Paulista (FCAV-UNESP)

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2021, vol. 23, issue 11, No 33, 16410-16427

Abstract: Abstract Soils feature significant variations in soil carbon stocks through land-use changes, management practices, and intrinsic characteristics. The aim of this study was to estimate the changes in soil carbon stock under different scenarios of land use and agricultural management in the Maranhão State, Brazil, considering the conversion from the conventional agriculture into conservationist management systems. Changes in soil carbon stocks were estimated from the scenario t0 to the current scenario (2010), followed by the adoption of a conservationist scenario by the year 2030. Soils under pasturelands presented the highest average of carbon stocks (62.19 Mg ha−1), followed by forestry lands (61.60 Mg ha−1) and agricultural lands (38.28 Mg ha−1). The conversion of native vegetation into an intensive agricultural use contributed to soil carbon losses of 1.57 Mt C, with pasturelands accounting for 1.36 Mt C and agricultural lands for 0.21 Mt C by 2010. The replacement of intensive agricultural systems into conservationist systems in the current areas has a technical potential for soil carbon sequestration of 0.6 Mt by 2030, with livestock and agricultural lands accounting for 0.54 and 0.03 Mt C, respectively.

Keywords: Estimates; Conservationist management; Agricultural and livestock soil use (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10668-021-01351-x

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