LBA-ECO TG-07 TRACE GAS FLUXES, UNDISTURBED AND LOGGED SITES, PARA, BRAZIL: 2000-2002

Federal Geographic Data Committee (FGDC) Metadata:

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• Data_Quality_Information
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Identification_Information:

Citation:

Citation_Information:

Originator: ASNER, G.P.CRILL, P.M.DE OLIVEIRA, R.C. JR.DIAS, J.D.KELLER, M.M.SILVA, H.S.VARNER, R.K.

Publication_Date: 2009

Title: LBA-ECO TG-07 TRACE GAS FLUXES, UNDISTURBED AND LOGGED SITES, PARA, BRAZIL: 2000-2002

Edition:

Geospatial_Data_Presentation_Form: Online Files

Series_Information:

Series_Name:

Issue_Identification:

Publication_Information:

Publication_Place: Oak Ridge, Tennessee, U.S.A.

Publisher: Oak Ridge National Laboratory Distributed Active Archive Center

Other_Citation_Details:

Online_Linkage: http://mercury.ornl.gov/ornldaac/send/query?term2=926&term2attribute=fileID

Description:

Abstract:

Selective logging is an extensive land use in the Brazilian Amazon region. We studied the soil-atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) on two soil types (clay Oxisol and sandy loam Ultisol) over two years (2000-2001)in both undisturbed forest and forest recently logged using reduced impact forest management in the Tapajos National Forest, near Santarem, Para, Brazil. In undisturbed forest, annual soil-atmosphere fluxes of N2O (mean +/- standard error) were 7.9 +/- 0.7 and 7.0 +/- 0.6 ng N cm-2 h-1 for the Oxisol and 1.7 +/- 0.1 and 1.6 +/- 0.3 ng N cm-2 h-1 for the Ultisol for 2000 and 2001 respectively. The annual fluxes of NO from undisturbed forest soil in 2001 was 9.0 +/- 2.8 ng N cm-2 h-1 for the Oxisol and 8.8 +/- 5.0 ng N cm-2 h-1 for the Ultisol. Consumption of CH4 from the atmosphere dominated over production on undisturbed forest soils. Fluxes averaged -0.3 +/- 0.2 and -0.1 +/- 0.9 mg CH4 m-2 d-1 on the Oxisol and -1.0 +/- 0.2 and -0.9 +/- 0.3 mg CH4 m-2 d-1 on the Ultisol for years 2000 and 2001. For CO2 in 2001, the annual fluxes averaged 3.6 +/- 0.4 :mol m-2 s-1 on the Oxisol and 4.9 +/- 1.1 :mol m-2 s-1 on the Ultisol. We measured fluxes over one year each from two recently logged forests on the Oxisol in 2000 and on the Ultisol in 2001. Sampling in logged areas was stratified from greatest to least ground disturbance covering log decks, skid trails, tree-fall gaps, and forest matrix. Areas of strong soil compaction, especially the skid trails and logging decks were prone to significantly greater emissions of N2O, NO, and especially CH4. In the case of CH4, estimated annual emissions from decks reached extremely high rates of 531 +/- 419 and 98 +/- 41 mg CH4 m-2 d-1, for Oxisol and Ultisol sites respectively, comparable to wetland emissions in the region. We calculated excess fluxes from logged areas by subtraction of a background forest matrix or undisturbed forest flux and adjusted these fluxes for the proportional area of ground disturbance. Our calculations suggest that selective logging increases emissions of N2O and NO from 30% to 350% depending upon conditions. While undisturbed forest was a CH4 sink, logged forest tended to emit methane at moderate rates. Soil-atmosphere CO2 fluxes were only slightly affected by logging. The regional effects of logging cannot be simply extrapolated based upon one site. We studied sites where reduced impact harvest management was used while in typical conventional logging ground damage is twice as great. Even so, our results indicate that for N2O, NO, and CH4, logging disturbance may be as important for regional budgets of these gases as other extensive land use changes in the Amazon such as the conversion of forest to cattle pasture.

Purpose:

Not Available

Supplemental_Information:

Not Available

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20000119

Ending_Date: 20020226

Currentness_Reference:Unknown

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -54.9707

East_Bounding_Coordinate: -54.9707

North_Bounding_Coordinate: -3.017

South_Bounding_Coordinate: -3.017

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: GCMD PLATFORM

Theme_Keyword_Thesaurus: GCMD INSTRUMENT

Theme_Keyword_Thesaurus: PROJECT

Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword_Thesaurus: DATA SET LANGUAGE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > CARBON DIOXIDE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > METHANE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITRIC OXIDE

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITROUS OXIDE

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE

Theme_Keyword: FIELD INVESTIGATION

Theme_Keyword: LABORATORY

Theme_Keyword: THERMOMETERS

Theme_Keyword: IRGA > INFRARED GAS ANALYZERS

Theme_Keyword: GAS CHROMATOGRAPHS

Theme_Keyword: IONIZATION PRESSURE GAUGES

Theme_Keyword: CHEMILUMINESCENCE

Theme_Keyword: BALANCE

Theme_Keyword: TEMPERATURE PROBES

Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM

Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM

Theme_Keyword: LBA-ECO > NASA'S COMPONENT OF THE LARGE-SCALE BIOSPHERE-ATMOSPHERE EXPERIMENT IN AMAZONIA

Theme_Keyword: Soil

Theme_Keyword: Methane

Theme_Keyword: Nitric Oxide

Theme_Keyword: Nitrous Oxide

Theme_Keyword: Soil Moisture

Theme_Keyword: Carbon Dioxide

Theme_Keyword: Trace Gas Exchange

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: ENVIRONMENT

Theme_Keyword: GEOSCIENTIFIC INFORMATION

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: CONTINENT > SOUTH AMERICA > BRAZIL

Access_Constraints: Not Available

Use_Constraints:

Not Available

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: G. P. ASNER

Contact_Position: TECHNICAL CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Department of Plant Biology

Address: Carnegie Institution of Washington

City: Stanford

State_or_Province: CA

Postal_Code: 94305

Country: USA

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Not Available

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:

Not Available

Process_Date: Unknown

Spatial_Reference_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: ORNL_DAAC > THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)

Contact_Person: ORNL DAAC USER SERVICES OFFICE

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: ORNL DAAC User Services Office

Address: Oak Ridge National Laboratory

City: Oak Ridge

State_or_Province: TN

Postal_Code: 37831-6407

Country: USA

Contact_Voice_Telephone: (865) 574-7447

Contact_Electronic_Mail_Address: uso@daac.ornl.gov

Resource_Description: 926

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Not Available

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://daac.ornl.gov/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=926...

Access_Instructions:

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://daac.ornl.gov//LBA/guides/TG07_Soil-Atmosph...

Access_Instructions:

LBA-ECO TG-07 TRACE GAS FLUXES, UNDISTURBED AND LOGGED SITES, PARA, BRAZIL: 2000-2002

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 20090430

Metadata_Review_Date: 20120814

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: ORNL DAAC USER SERVICES OFFICE

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: ORNL DAAC User Services Office

Address: Oak Ridge National Laboratory

City: Oak Ridge

State_or_Province: TN

Postal_Code: 37831-6407

Country: USA

Contact_Voice_Telephone: (865) 574-7447

Contact_Electronic_Mail_Address: uso@daac.ornl.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time