Topsoil organic carbon concentrations and stocks for Tanzania
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.
INSPIRE
Identification
- File identifier
- 10aa9ac3-1433-11e9-a8fa-a0481ca9e724 XML
- Hierarchy level
- Dataset
Online resource
- Protocol
- WWW:LINK-1.0-http--related
- Protocol
- WWW:LINK-1.0-http--related
- Protocol
- WWW:LINK-1.0-http--related
Resource identifier
- code
- 10aa9ac3-1433-11e9-a8fa-a0481ca9e724
- Metadata language
- English
- Spatial representation type
- Grid
Encoding
- Format
- GTiff
Projection
- code
- 32736
Classification of data and services
- Topic category
-
- Geoscientific information
Classification of data and services
Coupled resource
Coupled resource
Classification of data and services
Coupled resource
Coupled resource
Keywords
- Stratum
-
- Soil science
- Region
-
- Africa
- United Republic of Tanzania
Other keywords
- Theme
-
- digital soil mapping
- organic carbon
Geographic coverage
Temporal reference
Temporal extent
- Begin
- 9999-01-01
- End
- 2013-12-31
Temporal extent
- Date (Publication)
- 2019-03-01
Quality and validity
- Lineage
- 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
- Distance
- 250 m
Conformity
Conformity
Conformity
Conformity
Conformity
Conformity
Restrictions on access and use
- Access constraints
- Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0), https://creativecommons.org/licenses/by-nc-sa/4.0/
Responsible organization (s)
Contact for the resource
- Organisation name
- ISRIC - World Soil Information
- bas.kempen@wur.nl
Responsible organization (s)
Contact for the resource
- Organisation name
- ISRIC - World Soil Information
- bas.kempen@wur.nl
Metadata information
Contact for the metadata
- Organisation name
- ISRIC - World Soil Information
- Date stamp
- 2022-01-14T08:41:30
- Metadata language
- English
- Character set
- UTF8