TITLE
Tree Core Increment Data
PRINCIPAL INVESTIGATOR(s)
Eunshik
Kim
College Of Forestry, Department of Forest Resources, Kookmin University
861-1 Chongnung-Dong
Songbuk-gu, Seoul 136-702
Republic Of Korea
College Of Forestry, Department of Forest Resources, Kookmin University
861-1 Chongnung-Dong
Songbuk-gu, Seoul 136-702
Republic Of Korea
OTHERS INVOLVED
Herb
Bormann
BEGIN DATE
1985
END DATE
1986
LOCATION
Below WS4. The study site was selected at a stand (approximately 2 ha in area) below WS4. The slope of the site is 10-20 deg. facing southeast. Site elevation is 445-480 m.
West bounding coordinate: -71.737183
East bounding coordinate: -71.687683
North bounding coordinate: 43.958370
South bounding coordinate: 43.939945
East bounding coordinate: -71.687683
North bounding coordinate: 43.958370
South bounding coordinate: 43.939945
Elevation
Minimum: 445
Maximum: 480
(Unit: meter)
Maximum: 480
(Unit: meter)
SAMPLING DESIGN
During the winter of 1985-1986, 145 trees were selected from dominant and co-dominant trees of the 4 species at the study site. Each specie included at least 30 trees. Two cores were taken from each tree using an increment borer (0.5 cm in diameter). To reduce the variability due to slope, they were taken from two directions perpendicular to slope at the height of 1.0-1.2 m above ground. In coring, efforts were made to pass through the pith of stem. The cores were dried and glued onto wood mounts, then air-dried and fine sanded. Tree ring widths were initially measured using a Measuchron. In order to reduce error in dating the age of each core, the cores were cross-dated by checking the correspondence of growth patterns in some typical years using microscope examination and computer graphics.
DATA DESCRIPTION
Time series of annual tree ring increments were collected for trees of four species: beech, white ash, yellow birch, and sugar maple. The purpose of the study was to compare these time series with a selection of measured and derived environmental variables to develop a more sensitive model of tree diameter growth.
REFERENCES
- Kim, Eunshik. 1988. Radial Growth Patterns of Tree Species in Relation to Environmental Factors.
DATA ACCESS GUIDELINES
Publications using these data from the Hubbard Brook Ecosystem Study must include the following paragraph: Some data used in this publication were obtained by scientists of the Hubbard Brook Ecosystem Study; this publication has not been reviewed by those scientists. The Hubbard Brook Experimental Forest is operated and maintained by the Northeastern Research Station, U.S. Department of Agriculture, Newtown Square, Pennsylvania. Please note that data sharing and availability policy varies among the datasets available. Publishers of Hubbard Brook data are encouraged to contact the original data provider to obtain information for an acknowledgement of the original funding source of the research.
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By viewing or downloading the data, I certify that I accept the conditions herein
While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.
Digital data and its metadata derived from any research activity such as field observations, collections, laboratory analysis, experiments, or the post-processing of existing data and identified by a unique identifier issued by a recognized cataloging authority such as a site, university, agency, or other organization.
ndividual to whom access has been granted to this Data Set, including his or her immediate collaboration sphere, defined here as the institutions, partners, students and staff with whom the Data User collaborates, and with whom access must be granted, in order to fulfill the Data User's intended use of the Data Set
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party designated in the accompanying metadata of the Data Set as the primary contact for the Data Set.
The access to all LTER data is subject to requirements set forth by this policy document to enable data providers to track usage, evaluate its impact in the community, and confirm users' acceptance of the terms of acceptable use. These requirements are standardized across the LTER Network to provide contractual exchange of data between Site Data Providers, Network Data Providers, and Data Users that can be encoded into electronic form and exchanged between computers. This will allow direct access to data via a common portal once these requirements have been fulfilled. The following information may be required directly or by proxy prior to the transference of any data object:
Registration
Name
Affiliation
Email address
Full Contact Info
Acceptance of the General Public Use Agreement or Restricted Data Use Agreement, as applicable
A Statement of Intended Use that is compliant with the above agreements. Such statements may be made submitted explicitly or made implicitly via the data access portal interface.
The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:
Acceptable Use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier.
Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers.
Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.
By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.
By viewing or downloading the data, I certify that I accept the conditions herein
While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.
Digital data and its metadata derived from any research activity such as field observations, collections, laboratory analysis, experiments, or the post-processing of existing data and identified by a unique identifier issued by a recognized cataloging authority such as a site, university, agency, or other organization.
ndividual to whom access has been granted to this Data Set, including his or her immediate collaboration sphere, defined here as the institutions, partners, students and staff with whom the Data User collaborates, and with whom access must be granted, in order to fulfill the Data User's intended use of the Data Set
individual or institution that produced the Data Set
individual or institution that holds intellectual property rights to the dataset. Note that this may or may not be defined as a legal copyright. If no other party is designated in the metadata as Data Set Owner, it may be presumed that these rights are held by the Data Set Creator.
individual or institution providing access to the Data Sets.
party designated in the accompanying metadata of the Data Set as the primary contact for the Data Set.
NOTES ON DATA
How to read sample data:ID__TR__P__S__ST__D__AG__YR__FR____T_______R________DATE
1___1___1__2__1___1__92__90__1985__190.25__188.005__09-18-1986
2___1___1__2__1___2__92__81__1985__173.36__158.388__09-19-1986
No 1 tree, species 2, in plot 1, site 1. Two cores were taken from the tree. For the first core, only 90 rings were read and two rings were not separately read. For the second core, only 81 rings were read and eleven rings were not separately read. The age of the tree was estimated to be 92 years. By the difference of the T (total estimated radius), the stem seems to have a non-concentric circle.
The data is physically located at the USDA Forest Service, Durham, NH and was last updated in 1986.
CONTACT PERSON
Data file:
treecoredata.txt
Description: Tree core increments data at Hubbard Brook lter
CODES
Description: Tree core increments data at Hubbard Brook lter
| Column | Variable | Description | Units | Coded? | Missing value label |
| 1 | ID | Tree ID | none | y | none |
| 2 | YEAR | Year of radical increment | YYYY | n | none |
| 3 | INC_MM | Width of radial increment measured in mm | millimeter | n | none |
Variable: ID
|
Description:
|
A > 0 integer tree identifier
|
Data file:
treecoreinfo.txt
Description: Tree core info
CODES
Description: Tree core info
| Column | Variable | Description | Units | Coded? | Missing value label |
| 1 | ID | Tree core ID | none | y | none |
| 2 | TR | Tree number | none | y | none |
| 3 | P | Plot | none | y | none |
| 4 | S | Species | none | y | none |
| 5 | ST | Site | none | y | none |
| 6 | D | Direction (2 cores per tree) (see methods) | none | y | none |
| 7 | AG | (Estimated) total age (in years) | number | n | none |
| 8 | YR | Reliable number of years for reading the increments | number | n | none |
| 9 | FR | Initial year to read cores | YYYY | n | none |
| 10 | T | Total (estimated) radius read | millimeter | n | none |
| 11 | R | Reliable radius of the cores read for YR years | millimeter | n | none |
| 12 | DATE | Date the core was read | MM-DD-YYYY | n | none |
Variable: ID
|
Description:
|
A > 0 integer tree core identifier
|
|
Description:
|
A > 0 integer tree number
|
|
Description:
|
A counting number plot identifier
|
|
Code
|
Description
|
|
1
|
Fraxinus americana
|
|
2
|
Fagus grandifolia
|
|
3
|
Acer saccharum
|
|
4
|
Betula allegheniensis
|
|
Description:
|
A > 0 integer identifying the site number
|
|
Code
|
Description
|
|
1
|
Direction 1
|
|
2
|
Direction 2
|