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NPP Grassland: Jornada, USA, 1970-1972, R1


Data setNPP Grassland: Jornada, USA, 1970-1972, R1
Release date2014-08-19
ProjectNet Primary Productivity (NPP)
Time period1954-01-01 to 1992-12-31

Usage Metrics

CountEarliest DateLatest DateData Usage
Citations620022015Publications citing this data set
Downloads2582007-12-062017-04-171157 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.

Data set documentation


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Crosscite Citation Formatter
Pieper, R.D. 2014. NPP Grassland: Jornada, USA, 1970-1972, R1. ORNL DAAC, Oak Ridge, Tennessee, USA.

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Data Files

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Data File (Granule)File SizeDates
jrn_cli.txt 5.3KB 1954-01-01 to 1992-12-31
jrn1_npp.txt 5.1KB 1970-07-14 to 1972-10-21
jrn2_npp.txt 5.3KB 1970-07-15 to 1972-10-28

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  • NPP_JRN.pdf