Oak Ridge National Laboratory Distributed Active Archive Center

nasa-ornldaac-337

BOREAS TE-09 in Situ Diurnal Gas Exchange of NSA Boreal Forest Stands

ABSTRACT: The gas exchange data of the Boreal Ecosystem-Atmosphere Study (BOREAS) Northern Study Area (NSA) were collected to characterize diurnal gas exchange and water potential of two canopy levels of five boreal canopy cover types: young and old jack pine (Pinus banksiana Lamb.), old aspen (Populus tremuloides Michx.), and lowland and upland black spruce (Picea mariana (Mill) B.S.P.). These data were collected between 27-May-1994 and 17-Sep-1994. The purpose of this study was threefold: 1) to provide in situ gas exchange data that will be used to validate models of photosynthetic responses to light, temperature, and carbon dioxide (CO2); 2) to compare the photosynthetic responses of different tree crown levels (upper and lower), and 3) to characterize the diurnal water potential curves for these sites to get an indication of the extent to which soil moisture supply to leaves might be limiting photosynthesis.

daac.ornl.gov

http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=337

Identified by : BOREAS_TE09GXDA

This dataset was released on January 01, 1999.

The time range for this dataset is May 27, 1994 to September 14, 1994.

The spatial range for this dataset is 55.84° to 55.91° latitude, and -98.67° to -98.29° longitude. map (center)

DOI : 10.3334/ORNLDAAC/337
Also known as :

• dataset oai:mercury-ops2.ornl.gov:ornldaac_337 (ornl lexicon)
• dataset oai:mercury.ornl.gov:ornldaac_337 (ornl lexicon)