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NPP Grassland: Dickinson, USA, 1970, R1

Data Set Overview

Data setNPP Grassland: Dickinson, USA, 1970, R1
Release date2014-01-13
ProjectNet Primary Productivity (NPP)
Time period1891-01-01 to 1994-12-31

Usage Metrics

CountEarliest DateLatest DateData Usage
Citations520022015Publications citing this data set
Downloads2172007-12-062017-04-171090 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 northern mixed prairie grassland, one file for an ungrazed treatment and the other for a heavily grazed treatment. The study site (46.90 N, -102.82 W, Elevation 784 m) is located in the northern Great Plains, near the city of Dickinson, about 160-km west of Bismarck, North Dakota. The third file contains monthly and annual climate data for the period 1891-1994 obtained from a weather station near Dickinson (46.88 N, -102.80 W, Elevation 750 m). Dynamics of above-ground living and dead plant biomass were monitored by the harvest technique at roughly 2-week intervals during the growing season of 1970. Total below-ground biomass was sampled at the same intervals by manual coring within the harvested plots to a depth sufficient to include at least 90% of the root mass. 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 Grassland Biome Project of the International Biological Program (IBP). Above-ground net primary productivity (ANPP) was estimated conservatively by summing peak biomass of individual species. These values were 351 g/m2/year for ungrazed and 302 g/m2/year for grazed grassland plots. Below-ground net primary productivity (BNPP) was estimated as the sum of positive increments in total root biomass (including root crowns); 932 g/m2/year for ungrazed and 958 g/m2/year for grazed grassland plots.

Data set documentation


Whitman, W., and W.K. Lauenroth. 2014. NPP Grassland: Dickinson, USA, 1970, R1. ORNL DAAC, Oak Ridge, Tennessee, USA.

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Data Files

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Data File (Granule)File SizeDates
dck_cli.txt 2.0KB 1891-01-01 - 1994-12-31
dck1_npp.txt 2.1KB 1970-05-26 - 1970-10-17
dck2_npp.txt 2.0KB 1970-05-26 - 1970-10-17

Companion Files

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Data set has 1 companion files.

  • NPP_DCK.pdf