Oak Ridge National Laboratory Distributed Active Archive Center

nasa-ornldaac-204

NPP Grassland: Beacon Hill, U.K., 1972-1993, R1

ABSTRACT: This data set contains two ASCII text files, one providing productivity measurements for a chalk grassland on Beacon Hill, West Sussex, U.K. (50.92 N, -0.85 W) and the other containing climate data from a weather station at the former King's College London, Rogate Field Centre, 6 km distant (51.01 N, -0.85 W). Measurements of above-ground live biomass and total dead matter were made by harvesting 0.25-m2 quadrats in the 20 x 20-m study area at eight to ten week intervals from March 1972 to April 1973. Precipitation amount and minimum/maximum temperature were recorded from 1969 through 1993. Above-ground net primary production (ANPP) was estimated by several methods: 332 g/m2/year (annual increase in living biomass, sum of species); 355 g/m2/year (peak or maximum live biomass, plant dry matter weight); 773 g/m2/year (maximum live + dead biomass); 310 g/m2/year (annual increase in living biomass carbon by summing positive increments in biomass); and 691 g/m2/year (annual net production accounting for leaf turnover). The carbon content of ANPP (accounting for leaf turnover) was estimated to be 310 gC/m2/year using a conversion factor of 0.45. Below-ground production was not measured. 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=204

Identified by : BCN_NPP

This dataset was released on January 01, 2013.

The time range for this dataset is January 01, 1969 to December 31, 1993.

The spatial range for this dataset is 50.92° to 50.92° latitude, and -0.85° to -0.85° longitude. map

DOI : 10.3334/ORNLDAAC/204
Also known as :

• dataset oai:mercury-ops2.ornl.gov:ornldaac_204 (ornl lexicon)
• dataset oai:mercury.ornl.gov:ornldaac_204 (ornl lexicon)