NOTICE -- The LBA-ECO Project website is no longer being supported.  This archive is a snapshot, as it existed in 2013, of the LBA-ECO website, maintained by NASA Goddard Space Flight Center, and now archived at the ORNL DAAC.  Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC.
banner
banner banner banner banner banner banner
banner banner banner banner banner banner banner
home aboutlibrarynews archivecontacts banner

spacer
banner
Investigations
Overview
Abstracts & Profiles
Publications
Research Sites
Meetings
Synthesis Groups
LBA-HYDROMET
LBA-Air-ECO
Logistics
Overview
Field Support
Travel
Visa
Shipping
Data
  Overview
Find LBA Data
Investigator Checklist
Process & Policy
Documentation & Archive
Training & Education
  Overview
Activities Summary
T&E Goals
Student Opportunities
  Folha Amazônica
 
spacer

Investigation:

ND-11 (Lehmann / Passos / Couto)

LBA Dataset ID:

ND11_SNM_MT

Originator(s):

1. FELDPAUSCH, T.R.
2. COUTO, E.G.
      3. LEHMANN, J.
4. RIHA, S.J.

Point(s) of Contact:

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Dataset Abstract:

This data set reports the results of the analysis of soil samples for nitrate (NO3) and physical properties that were collected for one year following reduced impact logging in logging concessions at the Fazenda Rohsamar in the municipality of Juruena in northwestern Mato Grosso. Sample locations were randomly selected from stratified regions of the 1,400 ha Block 5 to account for local scale soil variability. Soil samples were collected to 8-m depth in (1) nine gaps formed by single tree removal and (2) nine areas of undisturbed primary forest. Areas of undisturbed forest were confined to patches of forest within Block 5 that were protected from logging. An additional 3 forested areas were sampled to 3-m depth that contained high sand content. These results quantified the effects of reduced impact logging, to test whether nitrogen (N) loss from leaves and coarse woody debris under reduced impact logging results in a significant accumulation of subsoil nitrate (Feldpausch et al., 2009). One comma-delimited data file contains the soil moisture results and a second file the soil NO3 content and soil physical properties.

Beginning Date:

2004-08-03

Ending Date:

2005-08-18

Metadata Last Updated on:

2010-06-17

Data Status:

Archived

Access Constraints:

PUBLIC

Data Center URL:

http://daac.ornl.gov/

Distribution Contact(s):

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Access Instructions:

PUBLIC

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Datafile(s):

LBA-ECO ND-11 Forest Soil Structure and Nitrate, NW Mato Grosso, Brazil: 2004-2005 :  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=976

Documentation/Other Supporting Documents:

LBA-ECO ND-11 Forest Soil Structure and Nitrate, NW Mato Grosso, Brazil: 2004-2005 :  http://daac.ornl.gov/LBA/guides/ND11_Soil_Nitrate_Moisture_MT.html

Citation Information - Other Details:

Feldpausch, T.R., E.G. Couto, J. Lehmann, S.J. Riha. 2010. LBA-ECO ND-11 Forest Soil Structure and Nitrate, NW Mato Grosso, Brazil: 2004-2005. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/976

Keywords - Theme:

Parameter Topic Term Source Sensor
NITROGEN LAND SURFACE SOILS LABORATORY SPECTROPHOTOMETER
SOIL BULK DENSITY LAND SURFACE SOILS LABORATORY WEIGHING BALANCE
SOIL MOISTURE/WATER CONTENT LAND SURFACE SOILS LABORATORY WEIGHING BALANCE
SOIL TEXTURE LAND SURFACE SOILS LABORATORY HUMAN OBSERVER

Uncontrolled Theme Keyword(s):  LOGGING EFFECTS, NITROGEN TURNOVER, PHYSICAL PROPERTIES, PRIMARY FOREST, SOIL NITRATE

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  MATO GROSSO -10.42490 -10.42490 -58.75970 -58.75970

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

All data were collected in the municipality of Juruena in the state of Mato Grosso. Samples were collected between Aug 2004 and August 2005. Two comma-delimited ASCII files are provided.

File #1: ND11_Soil_Moisture_NO3_Study_MT.csv
This file provides measurements of soil moisture in gaps and undisturbed primary forest in Mato Grosso, Brazil.
Column Heading Units/Format Description

1 Date YYYYMMDD Date sampled
2 Month mmm Month sampled
3 Year YYYY Year sampled
4 Replicate Replicate a or b at the same sampling depth
5 Sub_block Sub-block (UT), work unit within the logging block (e.g., Basin-1, Basin-4, UT-8)
6 Tube Tube number
7 Canopy Intact or gap
8 Depth_class Four depth classes (cm): 0 to 50, >50 to 100, >100 to 150, >150 to 180
9 Sampling Depth cm Sampling depth
10 Soil _moisture % Determined by drying soil samples for 48 hours at 105 degrees C.
Missing data are indicated with -9999.
All sampling took place in Logging Block 5.
Example Data Records:

Header records omitted

Date,Month,Year,Replicate,Sub_block,Tube,Canopy,Depth_class,Sampling_depth,Soil _moisture
20040813,Aug.,2004,a,Basin-1,T6,Intact,0 to 50,10,20.5
20040813,Aug.,2004,a,Basin-1,T6,Intact,0 to 50,20,21.1
20040813,Aug.,2004,a,Basin-1,T6,Intact,0 to 50,40,22.5
...
20050818,Aug.,2005,b,UT-8,T29,Gap,0 to 50,10,15.4
20050818,Aug.,2005,b,UT-8,T29,Gap,0 to 50,20,18.5
20050818,Aug.,2005,b,UT-8,T29,Gap,0 to 50,40,22.1


File #2: ND11_Soil_Texture_NO3_Study_MT.csv
This file provides measurements of soil nitrate, soil texture and bulk density in gaps and undisturbed primary forest in Mato Grosso, Brazil.

Column Heading Units / Format Description
1 Date YYYYMMDD Date sampled
2 Sub_block Sub-block (UT), work unit within the logging block
3 Gap_number Project gap designation
4 Sample_number Project sample number
5 Site_type Site type, Logged gap or Forest
6 Sampling_depth cm Sampling depth range (e.g., 0-20, 200-250)
7 NO3_solution ug/L NO3 concentration of soil extraction
8 NO3_soil mg/kg NO3 concentration in soil. Soil NO3 was calculated by converting solution content to adjusted volume based on soil water content and soil bulk density.
9 Clay % Percent clay
10 Silt % Percent silt
11 Sand % Percent sand
12 Soil_bulk_density g soil/cm3 Soil bulk density

Missing data are indicated with -9999
All sampling took place in Logging Block 5.

Example Data Records:

Header records omitted

Date,Sub_block,Gap_number,Sample_number,Site_type,Sampling_depth,NO3_solution,NO3_soil,Clay,Silt,Sand,Soil_bulk_density
20041005,4,21,1,Logged gap,0-20,297.48,0.957,6.2,11.22,82.58,1.21
20041005,4,21,2,Logged gap,20-40,111.03,0.26,11.18,6.24,82.58,1.25
20041005,4,21,3,Logged gap,40-60,159.75,0.439,16.2,9.56,74.24,1.22
...
20040803,Basin-2,B2F9,133,Forest,200-250,168.11,-9999,-9999,-9999,-9999,1.2
20040803,Basin-2,B2F9,134,Forest,250-300,85.677,-9999,-9999,-9999,-9999,1.27
20040803,Basin-2,B2F9,135,Forest,300-350,34.035,-9999,-9999,-9999,-9999,1.08

Data Application and Derivation:

These data can be applied to model the effects of reduced impact logging on nitrogen cycling with potential implications for forest recovery and carbon sequestration in undisturbed and logged forests.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

At this time there are no known problems with the data.

Process Description:

Data Acquisition Materials and Methods:

Soil samples for NO3 analysis and soil physical properties were taken one year following reduced impact logging using a stratified random soil sampling scheme (sample locations were randomly selected from stratified regions of the block to account for local scale soil variability). From these randomly selected areas we collected soil samples to 8-m depth in 9 gaps formed by single tree removal and 9 areas of undisturbed primary forest. An additional 3 forested areas were sampled to 3-m depth that contained high sand content. Soil samples were collected from below the prone crown of the logged tree within each gap or within undisturbed forest using an Edelman auger extendable to 8-m at the following depth increments: 0-20, 20-40, 40-60, 60-100, and 50 cm increments thereafter. Soil samples were stored in bags in a cooler with ice in the field and stored at 2 degrees C at the end of the day (Feldpausch et al., 2009).

Soil mineral N was extracted the following day with 1N Potassium Chloride (KCL). The soil and KCl solution was shaken for 5 minutes and then stored at 2 degrees C for 16 hours to allow the soil to settle. Subsequently, 60 ml of the supernatant was transferred to new vials and stored at 2 degrees C until analyzed. The samples were filtered and analyzed by cadmium reduction.

Nitrate (NO3) was measured on a spectrophotometer (GENESYS 5) at the Universidade Federal de Mato Grosso, Cuiaba. Soil nitrate was calculated by converting solution content to adjusted volume based on soil water content and soil bulk density measured to 8-m depth.

Soil physical properties were measured in the intact 8-m deep forest samples. The soil was air dried, screened through a 2 mm stainless-steel sieve and analyzed according to methods described by EMBRAPA (Silva, 1999). Soil bulk density was measured at the depth increments given above to 8-m depth by collecting a known soil sample volume using an Edelman auger.

Soil moisture samples were collected 10 times from August 2004 to August 2005. To determine soil water content, 40-50 g of soil was taken from the sample, weighed wet, dried for 48 hours at 105 degrees C to constant weight and re-weighed.

References:

Feldpausch, T.R., A.J. McDonald, C.A.M. Passos, J. Lehmann, and S.J. Riha. 2006. Biomass, harvestable area, and forest structure estimated from commercial timber inventories and remotely sensed imagery in southern Amazonia. Forest Ecology and Management 233(1):121-132. doi:10.1016/j.foreco.2006.06.016

Feldpausch, Ted R., Eduardo G. Couto, Luiz Carlos Rodrigues, Daniela Pauletto, Mark S. Johnson, Timothy J. Fahey, Johannes Lehmann, and Susan J. Riha. 2009. Nitrogen aboveground turnover and soil stocks to 8-m depth in primary and selectively logged forest in southern AmazoniaGlobal Change Biology. doi: 10.1111/j.1365-2486.2009.02068.x

Silva.F.C. d. 1999. A manual of chemical analyses for soils, plants and fertilizers. EMBRAPA Technology Transfer Communication, Brasilia DF.


Related Publications

Feldpausch, Ted R., Eduardo G. Couto, Luiz Carlos Rodrigues, Daniela Pauletto, Mark S. Johnson, Timothy J. Fahey, Johannes Lehmann, and Susan J. Riha. 2009. Nitrogen aboveground turnover and soil stocks to 8-m depth in primary and selectively logged forest in southern AmazoniaGlobal Change Biology. doi: 10.1111/j.1365-2486.2009.02068.x

Skip navigation linksHOME | ABOUT | LIBRARY | NEWS ARCHIVE | CONTACTS | INVESTIGATIONS | LOGISTICS | DATA |TRAINING & EDUCATION

NASA logo
ORNL DAAC
Get Acrobat Reader