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LBA-ECO ND-10 Soil Properties of Pasture Chronosequences, Para, Brazil: 1997

Data Set Overview

Data setLBA-ECO ND-10 Soil Properties of Pasture Chronosequences, Para, Brazil: 1997
Release date2013-07-01
ProjectLarge Scale Biosphere-Atmosphere
Time Period1997-08-01


This data set provides the results of soil physical property and chemical measurements of samples collected from two pasture chronosequences (years since conversion from primary forest) located on two ranches south of Santarem, Para, Brazil, and east of the Tapajos River. Soil data includes soil classification, bulk density, texture, and mean concentrations of total nitrogen (N), carbon (C), phosphorus (P), and P fractions. The soils were high clay oxisols and highly sandy entisols. One chronosequence of sites was established on oxisol soils dating 2, 7, and 15 years since conversion from primary forest. A second set of sites, 1, 7, and 15 years old was established on the sandy entisols. Five of the six pasture sites were on a single ranch; the 2-year-old oxisol pasture was the exception. Ten soil samples per site were collected from 0-10 cm depth along random intervals within 100-m transects in August 1997. There are two comma-delimited (.csv) data files with this data set.


Data set reference document


Asner, G.P., A.R. Townsend, and M.M.C. Bustamante. 2013. LBA-ECO ND-10 Soil Properties of Pasture Chronosequences, Para, Brazil: 1997. ORNL DAAC, Oak Ridge, Tennessee, USA.
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Large Scale Biosphere-Atmosphere : The Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) is an intensive scientific investigation of the tropical rainforest of Brazil and portions of adjacent countries. Like FIFE and BOREAS, this project uses intensive remote-sensing techniques and ground-based experiments to investigate the atmosphere-biosphere-hydrosphere dynamics of this large tropical region. The LBA Project encompasses several scientific disciplines, or components. The LBA-ECO component focuses on the question: "How do tropical forest conversion, regrowth, and selective logging influence carbon storage, nutrient dynamics, trace gas fluxes, and the prospect for sustainable land use in Amazonia?"

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Companion Files

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  • ND10_Soil_Chemistry.pdf

Data Files

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Data File (Granule)File SizeDates
ND10_tapajos_pasture_soil_chemistry.csv 2.8 KB 1997-08-01 - 1997-08-31
ND10_tapajos_pastures_P_fractions.csv 2.5 KB 1997-08-01 - 1997-08-31

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