Camile Sothe; Alemu Gonsamo; Joyce Arabian; Werner A. Kurz; Sarah Finkelstein et. al. (2021): Soil organic carbon stock and uncertainties, 1m depth, at 250m spatial resolution in Canada, version 2.0. Version 1. 4TU.ResearchData. dataset. https://doi.org/10.4121/16686154.v1

Dataset

x choose version: version 3 - 2022-01-05 (latest) version 2 - 2021-12-29

• Soils
• Soil Sciences

machine Learning Methods Enable Predictive Modeling, soil carbon density, soil carbon stock estimate, soil carbon storage, terrestrial ecosystem models

2000-2019

CC0

• Carbon storage and distribution in terrestrial ecosystems of Canada

RefWorks, BibTeX, Reference Manager, Endnote, DataCite, NLM, DC, CFF

by Camile Sothe , Alemu Gonsamo , Joyce Arabian, Werner A. Kurz, Sarah Finkelstein , James Snider

This project aimed to produce the first wall-to-wall estimate of C stocks in plants and soils of Canada at 250 m spatial resolution. This dataset contains the map with the soil organic carbon (SOC) in kg/m² for entire Canada in 1m depth, and the uncertainty in SOC predictions. The SOC stock map was produced using 6,533 ground samples of soil organic carbon concentration (g/kg) and 2,973 ground samples of bulk density (kg/dm3), long-term climate data, remote sensing observations and a machine learning model. The soil samples containing the x and y coordinates, depth and SOC (in g/kg) information were overlaid with the stacked covariates (soil forming factors) to compose the regression matrix. Random forest models were trained using a recursive feature elimination scheme and a cross-validation assessment. The best model was used for spatial prediction of SOC over Canada in intermediate depths between 0 and 1 m (0cm, 5cm, 15cm, 30cm, 60cm, 100cm). Afterwards, the SOC stock of each depth increment was computed using SOC concentration and bulk density maps, and corrected with coarse fragment information. The depth increments have been added to compose the 0-1m depth interval multiplied by root depths fraction to discount shallow soils. Water and ice/snow areas were removed using a mask based on the Land Cover of Canada map. Ground ice in permafrost areas was discounted according to ice abundance using the ground ice map of Canada. The SOC stock uncertainty map was built using the first and third quantiles of quantile regression forest approach of SOC concentration and bulk density prediction (90% confidence interval).

• 2021-09-28 first online, published, posted

4TU.ResearchData

tiff

• Carbon storage and distribution in terrestrial ecosystems of Canada WWF-Canada

McMaster University
WWF-Canada