ORNL FACE Fine Root Data

Ledford, J.; Norby, R.J.; Tharp, M.L.

doi:10.15485/1463811

Title: ORNL FACE Fine Root Data

Dataset
Other Related Research

Abstract

This report documents 3 data files with names of root_production.dat,root_mortality.dat, and root_crop.dat. These data were recorded biweekly during the growing season on five FACE plots from 1998 through 2006. Beginning in 2004, data also were recorded monthly during the winter.The calculation of root-length production, mortality, and standingcrop is described in Hendrick, R.L. and K.S.Pregitzer (1993) The dynamics of fine root length, biomass, and nitrogen content in two northern hardwood ecosystems. Can. J. For. Res. 23:2507-2520. Methods for collecting these data are documented in Norby, R.J., J. Ledford, C.D. Reilly, N.E. Miller, and E.G. O'Neill (2004) Fine-root productiondominates response of a deciduous forest to atmospheric CO2 enrichment. Proc. Natl. Acad. Sci. 101:9689-9693. Also, the conversion factors needed to convert the fine-root data from mm/tube to g/m**2 are discussed inthis paper.

Authors:

Ledford, J.; Norby, R.J.; Tharp, M.L.

Environmental Sciences Division, Oak Ridge National Laboratory

Publication Date:: Tue Jul 10 00:00:00 EDT 2007

Other Number(s):: cdiac:ORNL FACE Fine Roots

Research Org.:: Environmental System Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) (United States)

Subject:: 54 ENVIRONMENTAL SCIENCES

Keywords:: carbon dioxide; CO2 enrichment; FACE; fine roots; root production; root standing crop; root mortality; ORNL FACE; sweetgum; Liquidambar Styraciflua; vegetation response; DAY; MONTH; YEAR; PROD1; PROD2; PROD3; PROD4; PROD5; MORT1; MORT2; MORT3; MORT4; MORT5; CROP1; CROP2; CROP3; CROP4; CROP5

Geolocation:: 35.9,-84.33|35.9,-84.33|35.9,-84.33|35.9,-84.33|35.9,-84.33

OSTI Identifier:: 1463811

DOI:: https://doi.org/10.15485/1463811

Project Location:

Citation Formats


                    Ledford, J., Norby, R.J., and Tharp, M.L. ORNL FACE Fine Root Data.  United States: N. p., 2007. 
        Web.  doi:10.15485/1463811.

Copy to clipboard


                    Ledford, J., Norby, R.J., & Tharp, M.L. ORNL FACE Fine Root Data.  United States.  doi:https://doi.org/10.15485/1463811

Copy to clipboard


                    Ledford, J., Norby, R.J., and Tharp, M.L. 2007.  
"ORNL FACE Fine Root Data".  United States.  doi:https://doi.org/10.15485/1463811.  https://www.osti.gov/servlets/purl/1463811. Pub date:Tue Jul 10 00:00:00 EDT 2007

Copy to clipboard


                    
@article{osti_1463811,

  title        = {ORNL FACE Fine Root Data},

  author       = {Ledford, J. and Norby, R.J. and Tharp, M.L.},

  abstractNote = {This report documents 3 data files with names of root_production.dat,root_mortality.dat, and root_crop.dat. These data were recorded biweekly during the growing season on five FACE plots from 1998 through 2006. Beginning in 2004, data also were recorded monthly during the winter.The calculation of root-length production, mortality, and standingcrop is described in Hendrick, R.L. and K.S.Pregitzer (1993) The dynamics of fine root length, biomass, and nitrogen content in two northern hardwood ecosystems. Can. J. For. Res. 23:2507-2520. Methods for collecting these data are documented in Norby, R.J., J. Ledford, C.D. Reilly, N.E. Miller, and E.G. O'Neill (2004) Fine-root productiondominates response of a deciduous forest to atmospheric CO2 enrichment. Proc. Natl. Acad. Sci. 101:9689-9693. Also, the conversion factors needed to convert the fine-root data from mm/tube to g/m**2 are discussed inthis paper.},

  doi          = {10.15485/1463811},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 10 00:00:00 EDT 2007},

  month        = {Tue Jul 10 00:00:00 EDT 2007}

}

Copy to clipboard

Dataset:

View Dataset

DOI: https://doi.org/10.15485/1463811

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Data Explorer and OSTI.GOV collections:

ORNL FACE Nitrogen Concentrations (Leaves, Litter, Fine Roots, Wood)

Dataset Norby, R.J. ; Iverson, C.M. ; Tharp, M.L.

This report documents the file, Nconc.dat, which contains the nitrogen concentration data for leaves, litter, fine roots, and wood for 1998-2006. These data were collected for rings 1 and 2 which are exposed to elevated CO2 and rings 3-5 which have ambient CO2.The 2005 and 2006 nitrogen concentrations for fine roots will be included when they become available. The N concentration in leaves could not bemeasured in ring 5 in 2006; an estimated value based on N concentration in litter and an average resorption efficiency is 1.073%.Additional information describing this dataset can be found in Norby, R.J. and C.M. Iversenmore »« less
ORNL FACE Tree Height, with data on height of a subset of trees measured every year, 1997-2009. Free-Air CO2 Enrichment (FACE) Experiment Synthesis Activities.

Dataset Norby, Richard

Height of 20 sweetgum trees in three rows of each of the plots in the Oak Ridge National Laboratory (ORNL) free-air CO2 enrichment (FACE) experiment was measured each year of the experiment (1997-2009). The trees were exposed to ambient or elevated CO2. Tree height data contribute to the overall project objectives to determine the integrated response of a deciduous forest to elevated CO2. Average tree height per plot was used in allometric equations to calculate tree dry mass each year and to test whether there were effects of elevated CO2 on canopy development. Height was derived from trigonometric calculation frommore »« less
ORNL FACE Weather Data

Dataset Riggs, J.S ; Tharp, M.L. ; Norby, R.J.

Weather data are available for 1999-2007. There is an hourly (*wh*) and a daily (*wd*) file for each of the six plots (rings) on the FACE site, giving a total of 12 files for each year. The 2007 files will be updated as data become available. Daily statistics were calculated only for those variables with at least 12 good hourly values, and the calculation of daily statistics for the variables, PAR2m, PAR22m, and PYRAN, required 12 good daylight hours. Otherwise, the daily values were set to missing.
ORNL FACE CO2 Concentration Data

Dataset Riggs, J.S ; Tharp, M.L. ; Norby, R.J.

CO2 concentration data are available for 1999-2006. There is an hourly file for each year which contains elevated and ambient CO2 concentrations. The 2007 file will be updated as data become available. These data files include FACE site measurements of CO2 concentrationsfor rings 1, 2, 4, and 5. Rings 1 and 2 are elevated CO2 concentrations, and rings 4 and 5 are ambient CO2 concentrations. CO2 is sampled continuously from the top of the canopy at the center of eachring and is measured with a LiCor 6252 infrared gas analyzer located in an instrument shed next to each ring. Windmore »« less
ORNL FACE Soil Moisture Data

Dataset Tharp, M.L. ; Norby, R.J.

On the FACE site, soil moisture data are available for ring 1 through ring 5 from 1997-2007, and there are data for ring 6from 1997-1999. Ring 1 and ring 2 are exposed to elevated CO2, and the remaining rings have ambient CO2. Soil moisture was measured with a time-domain reflectometer(TRASE systems, Soil Moisture Equipment Corporation,Santa Barbara, CA) to a depth of 20cm. The missing-value indicator for the soil moisture data is -99.99.

Similar Records