Dados do Trabalho

Título

SATELLITES DATA BOOSTING CARBON CREDITS INITIATIVES

Resumo

Soil Organic Carbon (SOC) is one of the most important soil properties due to its impact on soil health and climate regulation. In the last few years, the soil carbon credits strategy is looking forward to preserving and enhancing carbon storage conditions in soils. This work aims to verify the potential of satellite optical sensors in detecting and quantifying soil carbon. We calculated a soil synthetic image (SySI) from Sentinel-2 and another from Landsat data using the geospatial soil sensing system (GEOS3), reaching the entire Brazilian territory, where it had registered bare soil in the imaging periods of both sensors. In about 22,000 sites, we depict the wet analyses of carbon and respective bands reflectance processing through the cubist algorithm assist in evaluating the quantification of the C element. The R2 values for calibration and validation reached 0.42 and 0.16, respectively, for Landsat, and 0.45 and 0.16 for Sentinel-2. The models performed significant results, but the validation step did not perform as well. However, considering a target is a distance of 800 km from the sensor with a spatial resolution of 30m and 10m, the models clearly showed that the technique has potential for carbon studies and boosting carbon credits initiatives. On one hand, this initiative would help quick access to significant information for both public and commercial stakeholders. On the other hand, validation of the underscore results is needed for further studies for improvement of modeling.

Palavras-chave

carbon stock; soil management zones; agriculture; soil health; remote sensing.

Instituição financiadora

The State of São Paulo Research Foundation (FAPESP) 2021/05129-8

Agradecimentos

The authors thanks GeoCis Research Group for sampling and analyses