Land use change in Matopiba: impact of soil textural class variation on carbon quantity and quality

• Grant number: 19/27378-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: June 01, 2020
• End date: July 31, 2021
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Carlos Eduardo Pellegrino Cerri
• Grantee: Jorge Luiz Locatelli
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Associated scholarship(s): 20/14271-0 - Land use change and textural classses effect on soil quality in the new agricultural frontier of Brazil: the Matopiba region, BE.EP.MS

Abstract

Brazil has witnessed an accelerated agricultural expansion process in recent decades, with emphasis on the MATOPIBA region. Disturbance of natural areas is known to have a direct impact on soil organic carbon (C) dynamics, an attribute that plays a fundamental role in a series of biogeochemical processes. However, little is known about the impact of land use change on areas that had not been explored before and which are characterized by unique climate and soil aspects, as in the case of MATOPIBA. The objective of this study is to evaluate the effect of land use change on C quantity and quality in soils with different particle size classes located in areas of agricultural expansion in the Cerrado of Maranhão. The study will be conducted in the region of Maranhão, under the use of native forest and annual crops, the latter in textural gradients. The soil will be sampled to a depth of 1 m to evaluate the accumulation of C, nitrogen, microbial biomass C, ² - glucosidase activity, physical fractionation of soil organic matter (SOM), humification index and aggregate stability. The data will be submitted to analysis of variance (ANOVA) and the averages obtained will be compared through the Scott-Knott multiple comparison test (p <0.05) and principal component analysis (PCA). The analytical results will be integrated to express Carbon Management Index (CMI) and Soil Management Assessment Framework (SMAF), useful indicators as subsidies for decision makers associated with the expansion of Brazil's largest agricultural frontier. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SANTOS, RAFAEL S.; WIESMEIER, MARTIN; OLIVEIRA, DENER M. S.; LOCATELLI, JORGE L.; BARRETO, MATHEUS S. C.; DEMATTE, JOSE A. M.; CERRI, CARLOS E. P.. Conversion of Brazilian savannah to agricultural land affects quantity and quality of labile soil organic matter. Geoderma, v. 406, JAN 15 2022. (19/17576-9, 19/27378-0)

SANTOS, RAFAEL S.; WIESMEIER, MARTIN; CHERUBIN, MAURICIO R.; OLIVEIRA, DENER M. S.; LOCATELLI, JORGE L.; HOLZSCHUH, MARQUEL; CERRI, CARLOS E. P.. onsequences of land-use change in Brazil's new agricultural frontier: A soil physical health assessmen. Geoderma, v. 400, OCT 15 2021. (19/27378-0, 19/17576-9)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

LOCATELLI, Jorge Luiz. Agricultural expansion affects soil quality indicators in the MATOPIBA region: Brazil\'s new agricultural frontier. 2021. Master's Dissertation - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.