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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

Platform

FIELD SURVEYS

AERIAL PHOTOGRAPHS

Instrument

CLINOMETERS

CONDUCTIVITY METERS

Ancillary Keywords

SOILS

GEOMORPHOLOGY

PERIGLACIAL

PERMAFROST

Originating Center

University Autonoma of Madrid (Geology Group GEOANT)

Data Center

Centro Nacional de Datos Antarticos, National Antarctic Data Centre, Comite Polar Espanol, Spain

Data Center URL: http://hielo.igme.es/

Data Center Personnel
Name: ANTONIO BARRAGAN SANABRIA Phone: +34913495731 Fax: +34913495929 Email: a.barragan at igme.es Contact Address: Centro Nacional de Datos Antarticos Instituto Geologico y Minero de Espana c/Rios Rosas 23 City: Madrid Postal Code: 28003 Country: SPAIN

Personnel

JERONIMO LOPEZ-MARTINEZ

Role: INVESTIGATOR

Role: TECHNICAL CONTACT

Phone: +34914974513

Fax: +34914972982

Email: jeronimo.lopez at uam.es

Contact Address:

Universidad Autonoma de Madrid

Departamento de Geologia y Geoquimica

Facultad de Ciencias

Campus de Canto Blanco

c/ Fco. Tomás y Valiente 7

City: Madrid

Province or State: Madrid

Postal Code: 28049

Country: Spain

OSCAR BERMUDEZ MOLINA

Role: DIF AUTHOR

Phone: +34913495889

Fax: +34913495929

Email: o.bermudez at igme.es

Contact Address:

Centro Nacional de Datos Antarticos

Instituto Geologico y Minero de Espana

C/ Rios Rosas 23

City: Madrid

Postal Code: E-28003

Country: SPAIN

Publications/References

Geomorfología, suelos y permafrost

Creation and Review Dates

DIF Creation Date: 2006-02-09

Last DIF Revision Date: 2009-09-23

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