Data Set Overview
|Data set||NPP Grassland: Jornada, USA, 1970-1972, R1|
|Project||Net Primary Productivity (NPP)|
|Time period||1954-01-01 to 1992-12-31|
|Count||Earliest Date||Latest Date||Data Usage|
|Citations||6||2002||2015||Publications citing this data set|
|Downloads||258||2007-12-06||2017-04-17||1157 total files downloaded|
This data set contains three ASCII files (.txt format). Two files contain above- and below-ground biomass and productivity data for a desert grassland in the Jornada Experimental Range, New Mexico, one file for an ungrazed treatment and the other for a light to moderately grazed treatment. The study site (32.60 N, -106.85 W, Elevation 1,350 m) is located in the Basin and Range geomorphic province at the northernmost extent of the Chihuahuan Desert, near the city of Las Cruces, New Mexico, about 60-km northwest of El Paso, Texas. The third file contains climate data for the period 1954-1992 obtained from a weather station located near the study site (32.62 N, -106.73 W, Elevation 1,300 m). Dynamics of above-and below-ground plant biomass were monitored at roughly 2-week intervals during the growing season from 1970 to 1972. Data on above-ground live biomass, recent and old dead matter, and root-crown biomass are available for one to two replications of grazed and "ungrazed" (relatively undisturbed) treatments. Total below-ground biomass was also sampled. 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 US GrasslandBiome Project of the International Biological Program (IBP). Annual above-ground net primary production (ANPP) was estimated, conservatively, by summing peak biomass of individual species, and annual below-ground net primary production (BNPP) estimated as the sum of positive increments in total root biomass.
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|Data File (Granule)||File Size||Dates|
|jrn1_npp.txt||5.1KB||1970-07-14 - 1972-10-21|
|jrn2_npp.txt||5.3KB||1970-07-15 - 1972-10-28|
|jrn_cli.txt||5.3KB||1954-01-01 - 1992-12-31|
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Data Set Companion Files
Data set has 1 companion files.