Geotechnologies for mapping agricultural soils of São Paulo state

• Grant number: 18/21356-1
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Start date: January 10, 2019
• End date: July 09, 2019
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: José Alexandre Melo Demattê
• Grantee: José Lucas Safanelli
• Supervisor: Sabine Chabrillat
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Institution abroad: Helmholtz Association, Germany
• Associated to the scholarship: 16/01597-9 - Pedotransfer functions by geotecnologies associated with photopedology for pedological mapping in agricultural areas of São Paulo State, BP.DD

Abstract

Soil maps are essential guidelines for promoting the correct planning and use of soils. However, less than 5 percent of the Brazilian territory has detailed information about this natural resource. The use of remote sensing and cloud processing can support the mapping of soil properties with detailed spatial resolution, with the benefits of fast execution, economic resources save, which can be adapted for any large extent area. However, there are still limitations in getting specific information about soils from satellite images. We are going to develop a processing system based on cloud computing to assess the agricultural soils of São Paulo, Brazil. Using databases of topsoil information and machine learning algorithms, we are going to process multitemporal historical images and calibrate prediction models to map clay, sand, organic carbon, pH, cation exchange capacity, base saturation and total iron content. The results will be used to evaluate how the agricultural intensification has occurred regarding soil properties distribution and forecast the impacts of the current soil conditions on agricultural sustainability. Such development can be expanded to other agricultural regions of Brazil and around the world, promoting a better assessment and planning of agricultural soils. (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)

SAFANELLI, JOSE LUCAS; MELO DEMATTE, JOSE ALEXANDRE; DOS SANTOS, NATASHA VALADARES; ROSAS, JORGE TADEU FIM; QUINONEZ SILVERO, NELIDA ELIZABET; BONFATTI, BENITO ROBERTO; MENDES, WANDERSON DE SOUSA. Fine-scale soil mapping with Earth Observation data: a multiple geographic level comparison. Revista Brasileira de Ciência do Solo, v. 45, 2021. (16/01597-9, 14/22262-0, 18/21356-1)

SAFANELLI, JOSE LUCAS; CHABRILLAT, SABINE; BEN-DOR, EYAL; DEMATTE, JOSE A. M.. Multispectral Models from Bare Soil Composites for Mapping Topsoil Properties over Europe. REMOTE SENSING, v. 12, n. 9, MAY 2020. (18/21356-1, 16/01597-9)

SAFANELLI, JOSE L.; DEMATTE, JOSE A. M.; CHABRILLAT, SABINE; POPPIEL, RAUL R.; RIZZO, RODNEI; DOTTO, ANDRE C.; SILVERO, NELIDA E. Q.; MENDES, WANDERSON DE S.; BONFATTI, BENITO R.; RUIZ, LUIS F. C.; et al. Leveraging the application of Earth observation data for mapping cropland soils in Brazil. Geoderma, v. 396, AUG 15 2021. (18/21356-1, 14/22262-0, 16/01597-9)