DATASET TITLE: GROWTH AND CHEMICAL RESPONSES TO CO2 ENRICHMENT -
               VIRGINIA PINE (PINUS VIRGINIANA MILL.)

AUTHORS: R. J. LUXMOORE, R. J. NORBY, E. G. O'NEILL, AND
         D. G. WELLER
         ENVIRONMENTAL SCIENCES DIVISION
         OAK RIDGE NATIONAL LABORATORY
         OAK RIDGE, TN 37831

         J. M. ELLS AND H. H. ROGERS
         ARS-USDA
         BOTANY DEPARTMENT
         NORTH CAROLINA STATE UNIVERSITY
         RALEIGH, NC 27650

DOI: 10.3334/CDIAC/vrc.ndp009

SCOPE OF THE DATA: GROWTH AND CHEMICAL RESPONSES OF VIRGINIA PINE
     (PINUS VIRGINIANA MILL.) GROWN IN OPEN-TOP GROWTH CHAMBERS
     AT ELEVATED CO2 CONCENTRATIONS (+0, +75, +150, +300, +600
     PPMV) WERE EVALUATED OVER A FOUR MONTH PERIOD.  THE
     SEEDLINGS WERE GROWN IN NUTRIENT-DEFICIENT (NOT
     NUTRIENT-LIMITED) SANDY LOAM TOP SOIL TAKEN FROM AN OLD
     FIELD.  PLANT DRY WEIGHT, HEIGHT, AND STEM DIAMETER WERE
     MEASURED PRIOR TO AND FOLLOWING EXPOSURE TO ELEVATED CO2
     CONCENTRATIONS.  CHEMICAL ANALYSES WERE PERFORMED ON LEAF,
     STEM, AND ROOT TISSUES AS WELL AS LEACHATE BEFORE AND AFTER
     EXPOSURE.

DATA FORMAT: TWENTY-TWO DOS ASCII TEXT FILES ARE PROVIDED INCLUDING
     THIS DESCRIPTIVE FILE (NDP009.TXT), SEVEN DATA SETS, AND A
     FORTRAN (*.FOR) AND SAS (*.SAS) RETRIEVAL CODE TO READ AND PRINT
     EACH DATA FILE.  THE DATA FILES INCLUDE MEASUREMENTS OF INITIAL
     DRY WEIGHTS (DRYWGHT.DAT) AND MEASUREMENTS OF FINAL PHYSICAL
     PARAMETERS (PHYSPARA.DAT), MAJOR (MAJOR.DAT) AND MINOR (MINOR.DAT)
     NURIENT CONCENTRATIONS, CHEMICAL SOIL ANALYSES (SOILNUTR.DAT),
     AND MAJOR (LEACHATE.DAT) AND MINOR (SOLUTE.DAT) NUTRIENT
     LEACHATE CONCENTRATIONS.

                          REFERENCES

KRAMER, P. J., "CARBON DIOXIDE CONCENTRATION, PHOTOSYNTHESIS, AND
     DRY MATTER PRODUCTION,"  BIOSCIENCE 31:29-33 (1981).

LUXMOORE, R. J., "CO2 AND PHYTOMASS," BIOSCIENCE 31:626 (1981).

LUXMOORE, R. J., E. G. O'NEILL, J. M. ELLS, AND H. H. ROGERS,
     "NUTRIENT-UPTAKE AND GROWTH RESPONSES OF VIRGINIA PINE TO
     ELEVATED ATMOSPHERIC CO2," J. ENVIRONMENTAL QUALITY (SUBMITTED).