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LBA-ECO CD-04 Logging Damage, km 83 Tower Site, Tapajos National Forest, Brazil
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Revision date: September 7, 2011

Summary:

This data set contains the results of a survey of logging damage in a 18-ha plot (300 m N-S, 600 m E-W) east (upwind) of the eddy flux tower at km 83, Tapajos National Forest, Para, Brazil. Data collected include type of damage, snap height, and log dimensions, as well as calculated biomass of stems and canopy either damaged or removed in logging. There are two comma-delimited data files with this data set.

Figure 1. Diagram of logging concessions area. From Figueira et al. 2008.

Data Citation:

Cite this data set as follows:

de Sousa, C.A.D., J.R. Elliot, E.L. Read, A.M. Figueira, S.D Miller, and M.L.Goulden. 2011. LBA-ECO CD-04 Logging Damage, km 83 Tower Site, Tapajos National Forest, Brazil. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. http://dx.doi.org/10.3334/ORNLDAAC/1038

Implementation of the LBA Data and Publication Policy by Data Users:

The LBA Data and Publication Policy [http://daac.ornl.gov/LBA/lba_data_policy.html] is in effect for a period of five (5) years from the date of archiving and should be followed by data users who have obtained LBA data sets from the ORNL DAAC. Users who download LBA data in the five years after data have been archived must contact the investigators who collected the data, per provisions 6 and 7 in the Policy.

This data set was archived in September of 2011. Users who download the data between September 2011 and August 2016 must comply with the LBA Data and Publication Policy.

Data users should use the Investigator contact information in this document to communicate with the data provider. Alternatively, the LBA Web Site [http://lba.inpa.gov.br/lba/] in Brazil will have current contact information.

Data users should use the Data Set Citation and other applicable references provided in this document to acknowledge use of the data.

Table of Contents:

1. Data Set Overview:

Project: LBA (Large-Scale Biosphere-Atmosphere Experiment in the Amazon)

Activity: LBA-ECO

LBA Science Component: Carbon Dynamics

Team ID: CD-04 (Goulden / Rocha)

The investigators were Goulden, Dr. Michael L.; Menton, Mary Catherine; Miller, Dr. Scott D.; Rocha, Prof. Humberto Ribeiro da; Freitas, Helber Custodio de; Figuera, Michela; Sousa, Cleilim Albert Dias de; Elliot, Rob and Read, Edward L. You may contact Miller, Dr. Scott D. (smiller@albany.edu ).

LBA Data Set Inventory ID: CD04_Logging_Damage

This data set contains the results of a survey of logging damage in a 18-ha plot (300 m N-S, 600 m E-W) east (upwind) of the eddy flux tower at km 83, Tapajos National Forest, Para, Brazil. Data collected include type of damage, snap height and log dimensions as well as calculated biomass of stems and canopy either damaged or removed in logging.

Related data Sets

2. Data Characteristics:

Data are presented in two comma-delimited ASCII files:

File #1: CD04_KM83_Damaged_Tree_Statistics.csv

Common_name, Species, and Family for trees with LBA tag numbers installed in 2000 maybe obtained from the related data set, LBA-ECO CD-04 Biomass Survey, km 83 Tower Site, Tapajos National Forest, Brazil.

.
ColumnHeading Units/format Description
1Gap_noROW-NUM Location within the 18-ha grid where damaged tree was located. See accompanying documentation for map
2Tree_id  LBA tag number installed 2000
3Damage_code  Tree damage key: BS=bole snapped; CL=crown loss; DN=entire tree down; SL=severe lean; ST=standing
4Live_dead  L= live and D=dead
5DBHcm Diameter at breast height (DBH) measured in centimeters (cm). There are 6 trees with no recorded DBH which were given a value of 18.17 cm, which represents mean DBH. These 6 trees with Gap_no/Tree_id include: A-18/736, B-9/1216, C-18/-999, C-18/237, D-10/464, and D-4/-999
6Snap_htm Height of bole snap measured in meters (m). One tree, Gap_no/Tree_id = A-11/-999,  with no recorded snap height, was given a value of 3.12 m which represents the mean for the data set
7Crown_damaged   Fraction of tree crown lost
8Biomass_total_Manaus kgTotal tree biomass dry weight calculated using the allometric equations in Chambers et al. (2001), reported in kilograms (kg)
9Biomass_crown kgTree crown biomass dry weight calculated using the equations in Chambers et al. (2001), reported in kilograms (kg)
10Biomass_bole kgTree bole biomass dry weight calculated using the equations in Chambers et al. (2001), reported in kilograms (kg)
11Biomass_total_TMF kgTotal tree biomass dry weight calculated using the tropical moist forest equations in Chambers et al 2001, reported in kilograms (kg)
12Bole_htm Estimated total bole height calculated using the equations in Chambers et al. (2001), reported in meters (m)
13Bole_snap_fraction fractionFraction of bole snapped calculated as 1 - (Snap_ht divided by Bole_ht). Bole_snap_fraction was set to 1 for trees where Snap_ht (estimated in the field) was greater than Bole_ht (calculated from allometric equations)
14Bole_snap_mass kgMass of bole snapped calculated by multiplying Biomass_bole by Bole_snap_fraction
15Leaf_area_total m2Total tree leaf area calculated using the equations in Chambers et al. (2004), reported in meters squared (m2)
16Leaf_area_lost m2Amount of leaf area leaf area lost to damage calculated as Crown_damaged muliplied by Total_leaf_area reported in meters squared (m2)
17Canopy_mass_lost kgTotal mass of canopy lost to damage calculated as Crown_damaged muliplied by Biomass_crown reported in kilograms (kg)
Note: missing data represented by -999

Example data records

Gap_no,Tree_id,Damage_code,Live_dead,DBH,Snap_ht,Crown_damaged,Biomass_total_Manaus,Biomass_crown,Biomass_bole,
Biomass_total_TMF,Bole_ht,Bole_snap_fraction,Bole_snap_mass,Leaf_area_total,Leaf_area_lost,Canopy_mass_lost

A-11,474,CL,L,38.9,0,0.15,1584.01,527.46,1014.2,
1487.42,16.47,1,1014.2,150.99,22.65,79.12
A-11,475,CL,L,38.6,0,0.3,1556.52,517.11,997.33,
1459.36,16.41,1,997.33,149.47,44.84,155.13
A-11,-999,BS,D,35.9,15.51,1,1317.99,428.5,850.45,
1219.79,15.84,0.02,13.14,135.67,135.67,428.5
A-11,-999,BS,D,24.3,9.98,1,506.47,147.09,339.55,
453.29,13.61,0.21,72.47,74.95,74.95,147.09

File #2: CD04_KM83_Logged_Tree_Statistics.csv

ColumnHeading Units/format Description
1Gap_noROW-NUM Location within the 18-ha grid where stump was located.
2Notes   Notes
3Tree_id_LBA  LBA tag number installed 2000
4Tree_id_Cemex   CEMEX tag number installed 1984
5 Common_name  Tree  common name
6Species  Tree species
7Family Tree family
8Azimuthdegrees Direction of tree fall from stump to crown in degrees
9Stump_longitude UTM Location of stump in UTM longitude units based on GPS measurements
10Stump_latitude UTMLocation of stump in UTM latitude units based on GPS measurements
11Log_length mLog length  in meters estimated as distance from stump to crown. Tree_id_LBA =403, and Grid_no = F-9 had no recorded log length and was given mean log length value of 19.87 m for calculation purposes
12DBH cmLogged tree diameter at breast height (DBH). Two trees with no tag or missing DBH were given the mean DBH value of 82.5 cm. These trees, with Grid_no/Tree_id_LBA are  A-11/473 and F-3/-999
13Biomass_total_Manaus kgTotal tree biomass dry weight calculated using the allometric equations developed for Manaus in Chambers et al. (2001), reported in kilograms (kg)
14Biomass_crown kg Tree crown biomass dry weight calculated using the equations in Chambers et al. (2001) reported in kilograms (kg)
15Bole_bole kgTree bole biomass dry weight calculated using the equations in Chambers et al. (2001) reported in kilograms (kg)
16Biomass_total_TMF kgTotal tree biomass dry weight calculated using the general tropical moist forest equations from Chambers et al. (2001), reported in kilograms (kg)
17Bole_ht mEstimated total bole height calculated using the equations in Chambers et al. (2001), reported in meters (m)
18Bole_removed  Fraction of bole removed as log calculated as Log_length divided by Bole_ht
19Bole_remaining mLength of bole remaining calculated as Bole_ht minus Log_length and reported in kilograms (kg)
20Bole_mass_removed kgMass of bole removed in logging operations calculated as Biomass_bole multiplied by Bole_removed and reported in kilograms (kg). For trees where the Log_length was greater than Bole_ht, Bole_removed was set to 1 and Bole_mass_removed was calculated accordingly
21Bole_mass_remaining kgMass of bole remaining in logging operations calculated as Biomass_bole minus Bole_removed and reported in kilograms (kg)
22 Leaf_area_total m2Total tree leaf area calculated using the equations in Chambers et al. (2004), reported in meters squared (m2)
Note: missing data represented by -999. The absence of notes = none provided

Example data records

Gap_no,Notes,Tree_id_LBA,Tree_id_Cemex,Common_name,Species,Family,Azimuth,Stump_longitude,Stump_latitude,
Log_length,DBH,Biomass_total_Manaus,Biomass_crown,Biomass_bole,Biomass_total_TMF,Bole_ht,Bole_removed,
Bole_remaining,Bole_mass_removed,Bole_mass_remaining,Leaf_area_total

A-11,none provided,473,2453,Abiu casca grossa,Pouteria biloculares (Winkler)Baehni, Sapotaceae,157,210725724,9666130,
24.8,65.7,4547.4,1746.77,2795.11,5114.41,23.36,1.09,
-1.44,3040.56,-245.45,267.59
A-11,-none provided,477,2450,Tauari,Couratari guianensis Aubl.,Lecythidaceae,156, 210725702,9666184,
19.4,64.6,4415.6,1689.48,2716.54,4924.26,23.03,0.8,
3.63,2161.65,554.89,263.6
A-11,missing DBH,473,2457,Capitiu,Dendrobangia sp.,Icacinaceae,-999,-999,-999,
11.8,82.5,6530.09,2626.92,3980.89,8401.74,29.08,0.34,
17.28,1338.26,2642.63,320.49
A-18,none provided,738,2110,Macaranduba,Manilkara huberi (Ducke) Chev.,Sapotaceae,-999, -999,-999,
24,84,6700.28,2703.58,4083.39,8727.68,29.65,0.76,
5.65,3086.43,996.96,324.52
A-2,none provided,111,3000,Ucuuba terra firme,Virola melionii (Ben.)Warb.,Myristicaceae, 304,210725487,9666032,
27.4,74.7,5622.46,2220.45,3436.65,6789.4,26.27,1.06,
-1.13,3645.72,-209.08,297.75
B-0,none provided,6,3281,Macaranduba,Manilkara huberi (Ducke) Chev.,Sapotaceae,309, 210725416,9666075,
19.5,103,8680.91,3597.87,5293.85,13245.65,37.99,0.44,
18.49,2318.01,2975.83,367.18
B-1,none provided,2,3279,Macaranduba,Manilkara huberi (Ducke) Chev.,Sapotaceae,80, 210725429,9666082,
22,78,6010.54,2393.68,3668.92,7454.22,27.42,0.75,
5.42,2742.45,926.48,307.74
...

Site boundaries: (All latitude and longitude given in decimal degrees)

Site (Region) Westernmost Longitude Easternmost Longitude Northernmost Latitude Southernmost Latitude Geodetic Datum
Para Western (Santarem) -  km 83 Logged Forest Tower (Para Western (Santarem)) -54.9707 -54.9707 -3.017 -3.017 World Geodetic System, 1984 (WGS-84)

Time period:

Platform/Sensor/Parameters measured include:

3. Data Application and Derivation:

These data allow a quantitative evaluation of the amount of biomass affected by reduced impact logging in a mature lowland tropical forest.

4. Quality Assessment:

The data have been checked and no further changes are anticipated. For calculation purposes missing DBH and snap or log lengths were replaced with mean values for each as noted below.

For the CD04_KM83_Damaged_Tree_Statistics.csv file, trees with no recorded DBH were given a value of 18.17 cm which represents mean DBH, and for trees with no recorded snap height, a value of 3.12 m was used, which represents the mean for the data set. Trees for which Snap_ht (estimated in the field) was greater than Bole_ht (calculated from allometric equations), Bole_snap_fraction was set to 1.

For the CD04_KM83_Logged_Tree_Statistics.csv file, trees with no tag or missing DBH were given the mean DBH value of 82.5 cm, and trees with no recorded log length were given mean log length value of 19.87 m for calculation purposes. For trees where the Log_length was greater than Bole_ht, Bole_removed was set to 1 and Bole_mass_removed was calculated accordingly.

5. Data Acquisition Materials and Methods:

In March 2000, a 18-hectare plot (30 0m N-S by 60 0m E-W) directly east of the eddy flux tower at km 83, Tapajos National Forest, Para, Brazil, was surveyed. A grid of transects 25 meters apart was established and for all trees with a diameter at breast height (DBH) > 35 centimeters, diameter, commercial and total height, location within the plot, species common name, and condition (live, dead, damaged etc.) were recorded (Menton et al., 2011).


site map 

Figure 2. Diagram of the Km 83 logged survey sites. Gap_no in the data files references locations on this map. Locations are coded as ROW-NUM, for example, A-11 and B-1.

Between September and December 2001, the area was subjected to a reduced impact logging which removed 2-3 trees per hectare. As part of the reduced impact management, individual trees targeted were identified, vines cut to avoid damage to adjacent trees, and skid trails and logging patios planned out well in advance. After the logging operations were complete, the plot was resurveyed, and for every stem with significant damage from the logging operations and every stem cut, standing stem (snap) height, DBH, and species were recorded. For the trees cut, the dimensions of the logs removed were also recorded, and for non-target trees that were damaged, the type of damage was also recorded. From allometric equations (Chambers et al., 2001) total tree biomass, crown biomass, bole biomass, and bole height were estimated. From these values, the mass removed from the forest as logs, as well as the biomass left on site as slash and associated damage, was estimated on the stem level.

6. Data Access:

This data is available through the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).

Data Archive Center:

Contact for Data Center Access Information:
E-mail: uso@daac.ornl.gov
Telephone: +1 (865) 241-3952

7. References:

Chambers, J.Q., J. dos Santos, R.J. Ribeiro and N. Higuchi. 2001. Tree damage, allometric relationships, and above-ground net primary production in central Amazon forest. Forest Ecology and Management 152:73-84

Menton, M., M. Figueira, C.A.D. de Sousa, S.D. Miller, H.R. da Rocha, and M.L. Goulden. 2011. LBA-ECO CD-04 Biomass Survey, km 83 Tower Site, Tapajos National Forest, Brazil. 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/990

Related Publications: