10aa9ac3-1433-11e9-a8fa-a0481ca9e724
dataset
Ulan Turdukulov
ISRIC - World Soil Information
ulan.turdukulov@isric.org
2022-01-14T08:41:30
ISO 19115:2003/19139
2003/Cor.1:2006
32736
EPSG
Topsoil organic carbon concentrations and stocks for Tanzania
2019-03-01
10aa9ac3-1433-11e9-a8fa-a0481ca9e724
This soil organic carbon dataset contains the following maps: soil organic carbon concentration (%) for the 0-10 cm, 10-20 cm, 20-30 cm and 0-30 cm soil layers, and bulk density (kg/m3) and soil organic carbon stock (kg/m2) for the 0-30 cm layer.
These maps were produced with (geostatistical) regression-kriging models that combined soil data from the NAFORMA survey, the Tanzania National Soil Survey and the African Soil Profiles Database Version 1.1 with a suite of environmental GIS data layers including a land cover map, SOTER soil class map, maps of topographic attributes derived from the SRTM-DEM, maps of surface reflectance and vegetation indices derived from satellite imagery. The regression-kriging models were used to predict carbon concentrations, stocks and bulk density at the nodes of a regular grid with 250 meter cell size covering the Tanzania. Prediction uncertainty was quantified and is available with the data as the lower and upper boundary of the 90% prediction interval. Further details about the input data, modelling framework, and cross validation results are provided in a peer-reviewed, scientific journal article.
The project was funded by the UN-REDD Programme Output 2.4 “National Maps inform delivery of the REDD+ Framework” and conducted through a letter of Agreement between Food and Agricultural Organization of the United Nations (FAO) and ISRIC-World Soil Information. The maps were produced by ISRIC - World Soil Information in a collaborative effort with the National Soil Survey, Ministry of Natural Resources and Tourism, Tanzania Forest Services, Sokoine University, and the AfSIS project.
Bas Kempen
ISRIC - World Soil Information
Soil mapping specialist
PO Box 353
Wageningen
6700AJ
Netherlands
bas.kempen@wur.nl
digital soil mapping
organic carbon
Soil science
Stratum
Africa
United Republic of Tanzania
Region
Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0), https://creativecommons.org/licenses/by-nc-sa/4.0/
250
geoscientificInformation
9999-01-01
2013-12-31
29.60
40.50
-12.00
-1.00
GTiff
https://files.isric.org/public/TZ_SOC/
WWW:LINK-1.0-http--related
Download
https://www.isric.org/projects/carbon-mapping-tanzania
WWW:LINK-1.0-http--related
Project webpage
https://www.sciencedirect.com/science/article/pii/S0016706118305111?via%3Dihub
WWW:LINK-1.0-http--related
Report
Kempen, B. et al. (2019). Mapping topsoil organic carbon concentrations and stocks for Tanzania. Geoderma 337. - ISSN 0016-7061 - p. 164 - 180. https://www.sciencedirect.com/science/article/pii/S0016706118305111?via%3Dihub