Oak Ridge National Laboratory Distributed Active Archive Center

nasa-ornldaac-205

NPP Grassland: Bridger, USA, 1970-1973, R1

ABSTRACT: This data set contains three ASCII text files for the Bridger grassland study site in the Rocky Mountains (45.78 N, -110.78 W, Elevation 2,340 m). Two files contain above- and below-ground biomass data, one for each treatment (ungrazed and moderately grazed). The third file contains climate data from the Big Timber weather station (45.80 N, -110.00 W, Elevation 1,249 m) near Bridger. Dynamics of above- and below-ground plant biomass were monitored by harvest technique at roughly 2-week intervals during the growing season for the years 1970, 1972, and 1973. Data on above-ground live biomass, standing dead matter, and litter are provided for each sampling date. Below-ground biomass (roots and crowns) are provided for 0-30 cm and 0-50 cm depths. Data were collected as part of a coordinated study over 1-3 years at ten grassland sites of the central and western United States under the U.S. Grassland Biome Project of the International Biological Program (IBP). Above-ground net primary production (ANPP) was estimated, conservatively, by summing peak biomass of individual species. Below-ground net primary production (BNPP) was estimated as the sum of positive increments in total root biomass (including root crowns). Values varied according to treatment. Revision Notes: Only the documentation for this data set has been modified. The data files have been checked for accuracy and are identical to those originally published in 1998.

daac.ornl.gov

http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=205

Identified by : BRD_NPP

This dataset was released on January 01, 2013.

The time range for this dataset is January 01, 1894 to December 31, 1994.

The spatial range for this dataset is 45.78° to 45.78° latitude, and -110.78° to -110.78° longitude. map

DOI : 10.3334/ORNLDAAC/205
Also known as :

• dataset oai:mercury-ops2.ornl.gov:ornldaac_205 (ornl lexicon)
• dataset oai:mercury.ornl.gov:ornldaac_205 (ornl lexicon)