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Soil Organic Carbon Stock Estimates with Uncertainty across Latin America

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/1615
Project
Published2019-03-07
Updated2019-03-07
Usage61 downloads

Description

This dataset provides 5 x 5 km gridded estimates of soil organic carbon (SOC) across Latin America that were derived from existing point soil characterization data and compiled environmental prediction factors for SOC. This dataset is representative for the period between 1980 to 2000s corresponding with the highest density of observations available in the WoSIS system and the covariates used as prediction factors for soil organic carbon across Latin America. SOC stocks (kg/m2) were estimated for the SOC and bulk density point measurements and a spatially explicit measure of the SOC estimation error was also calculated. A modeling ensemble, using a linear combination of five statistical methods (regression Kriging, random forest, kernel weighted nearest neighbors, partial least squared regression and support vector machines) was applied to the SOC stock data at (1) country-specific and (2) regional scales to develop gridded SOC estimates (kg/m2) for all of Latin America. Uncertainty estimates are provided for the two model predictions based on independent model residuals and their full conditional response to the SOC prediction factors.

Science Keywords

  • LAND SURFACE
  • SOILS
  • SOIL BULK DENSITY
  • LAND SURFACE
  • SOILS
  • SOIL TEXTURE
  • LAND SURFACE
  • SOILS
  • ORGANIC MATTER
  • LAND SURFACE
  • SOILS
  • CARBON

Data Use and Citation

This dataset is openly shared, without restriction, in accordance with the NASA Data and Information Policy.

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Crosscite Citation Formatter
Guevara, M., G.F. Olmedo, E. Stell, Y. Yigini, C.A. Hernandez, G. Arevalo, C.E. Arroyo-cruz, A. Bolivar, S. Bunning, N.B. Canas, C.O. Cruz-gaistardo, F. Davila, M.D. Acqua, A. Encina, F. Fontes, J.A.H. Herrera, A.R.I. Navarro, V. Loayza, A.M. Manueles, F.M. Jara, C. Olivera, G. Pereira, P. Prieto, I.A. Ramos, J.C.R. Brina, R. Rivera, J. Rodriguez-Rodriguez, R. Roopnarine, A. Rosales, K.A.R. Rivero, G.A. Schulz, A. Spence, G.M. Vasques, R.R. Vargas, and R. Vargas. 2019. Soil Organic Carbon Stock Estimates with Uncertainty across Latin America. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1615

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Data Files

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Companion Files

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Dataset has 5 companion files.

  • SOC_estimates_LatinAmerica.kmz
  • background_variables.tif
  • SOC_estimates_LatinAmerica.zip
  • Country_SOC_Latin_America.pdf
  • background_variables_description.csv