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SOTER-based soil parameter estimates for Brazil (ver. 1.0)

Entry ID: ISRIC_SOTWISbrazil

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Summary

Abstract: This dataset presents harmonized soil parameter estimates for Brazil. The 1:5M scale Soil and Terrain Database for Latin America and the Caribbean (FAO et al. 1998), provided the basis for the current study. The data set has been prepared for the project on &Assessment of soil organic carbon stocks and change at national scale& (GEF-SOC), which has the Brazilian Amazon as one of its four case ... study areas [http://www.nrel.colostate.edu/projects/gefsoc-uk/].

The land surface of Brazil has been characterized using 299 unique SOTER units, corresponding with 839 polygons. The major soils have been described using 584 profiles, selected by national soil experts as being representative for these units. The associated soil analytical data have been derived from soil survey reports. Gaps in the measured soil profile data have been filled using a step-wise procedure which includes three main stages: (1) collating additional measured soil analytical data where available; (2) filling gaps using expert knowledge and common sense; (3) filling the remaining gaps using a scheme of taxotransfer rules. Parameter estimates are presented by soil unit for fixed depth intervals of 0.2 m to 1 m depth for: organic carbon, total nitrogen, pH(H2O), CECsoil, CECclay, base saturation, effective CEC, aluminum saturation, CaCO3 content, gypsum content, exchangeable sodium percentage (ESP), electrical conductivity of saturated paste (ECe), bulk density, content of sand, silt and clay, content of coarse fragments (> 2mm), and available water capacity (-33 to -1500 kPa). These attributes have been identified as being useful for agro-ecological zoning, land evaluation, crop growth simulation, modelling of soil carbon stocks and change, and analyses of global environmental change.

The current parameter estimates should be seen as best estimates based on the current selection of soil profiles and data clustering procedure. Taxotransfer rules have been flagged to provide an indication of the possible confidence in the derived data. Results are presented as summary files and can be linked to the 1:5 M scale SOTER map in a GIS, through the unique SOTER-unit code. The subset for the Amazon region, the Brazilian GEF-SOC case study area, has been clipped out of the national set using GIS. It includes 193 unique SOTER units, corresponding with 571 mapped polygons. The secondary data set is considered appropriate for studies at the national scale and regional scale (<1:5M). Correlation of soil analytical data, however, should be done more rigorously when more detailed scientific work is considered.

http://www.sric.org/

Related URL

Link: VIEW PROJECT HOME PAGE

Description: View project home page; download documentation and (zipped) data set.

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

	N: 5.26	S: -33.75	E: -34.79	W: -73.99
Min Altitude: 0 Max Altitude: 2000

Data Set Citation

Dataset Originator/Creator: Niels H. Batjes, Bernoux M and Cerri CEP

Dataset Title: SOTER-based soil parameter estimates for Brazil (ver. 1.0)

Dataset Release Date: 2004-03-01

Dataset Release Place: Wageningen

Dataset Publisher: ISRIC - World Soil Information

Version: ver. 1.0

Data Presentation Form: ArcView3.3 and MSAccess tables (zipped)

Other Citation Details: http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2004_03.pdf

Online Resource: http://www.isric.nl/isric/CheckRegistration.aspx?dataset=19

Temporal Coverage

Start Date: 1960-01-01

Stop Date: 2003-12-31

Location Keywords

CONTINENT > SOUTH AMERICA > BRAZIL

Data Resolution

Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree

Science Keywords

AGRICULTURE > SOILS > CALCIUM

AGRICULTURE > SOILS > CARBON

ISO Topic Category

ENVIRONMENT

GEOSCIENTIFIC INFORMATION

IMAGERY/BASE MAPS/EARTH COVER

Quality The dataset's lineage is described in: Batjes NH, Bernoux M and Cerri CEP 2004. Soil data derived from SOTER for studies of carbon stocks and change in Brazil (Version 1.0; GEFSOC Project), Technical Report 2004/03. ISRIC - World Soil Information, Wageningen. [http://www.isric.org/isric/webdocs/Docs/ISRIC_Report_2004_03.pdf]

Access Constraints ISRIC kindly requests that you send us two reprints of any publication that uses data received from ISRIC World Soil Information. This will help us to determine the type and level of use of the data we distribute.

Use Constraints Materials developed by ISRIC are copyrighted, all rights reserved. Reproduction and dissemination of such materials for educational or non-commercial purposes are authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of materials for resale or other commercial purposes is prohibited without prior written permission of the ...

Ancillary Keywords

secondary (derived) soil data

soil parameter estimates

Data Set Progress

COMPLETE

Originating Center

ISRIC - World Soil Information

Data Center

World Data Center for Soils, ISRIC - World Soil Information, Wageningen

Data Center URL: http://www.isric.org
Dataset ID: ISRIC_SOTWISbrazil

Data Center Personnel
Name: NIELS H. BATJES Phone: +31-317-471700 Email: niels.batjes at wur.nl Contact Address: ISRIC - World Soil Information (World Data Center for Soils) P.O. Box 353 City: Wageningen Postal Code: 6700 AJ Country: The Netherlands

Distribution

Distribution Media: internet (downloadable data)

Fees: n/a

Personnel

NIELS H. BATJES

Role: INVESTIGATOR

Phone: +31-317-471700

Email: niels.batjes at wur.nl

Contact Address:

ISRIC - World Soil Information (World Data Center for Soils)

P.O. Box 353

City: Wageningen

Postal Code: 6700 AJ

Country: The Netherlands

Publications/References

Batjes NH 2003. A taxotransfer rule-based approach for filling gaps in measured soil data in primary SOTER databases (GEFSOC Project). Report 2003/03, ISRIC - World Soil Information, Wageningen (http://www.isric.org/isric/webdocs/Docs/ISRIC_Report_2003_03.pdf)

Batjes NH 2005. Organic carbon stocks in the soils of Brazil. Soil Use and Management 21, 22-24

Batjes NH, Bernoux M and Cerri CEP 2004. Soil data derived from SOTER for studies of carbon stocks and change in Brazil (ver. 1.0; GEFSOC Project). Report 2004/03, ISRIC - World Soil Information, Wageningen (http://www.isric.org/isric/webdocs/Docs/ISRIC_Report_2004_03.pdf)

Creation and Review Dates

DIF Creation Date: 2007-07-30

Last DIF Revision Date: 2011-09-12

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