NPP Grassland: Hays, USA, 1970, R1
This data set contains three ASCII files (.txt format). Two files contain above- and below-ground biomass and productivity data for a mixed prairie grassland, one file for an ungrazed treatment and the other for a moderately grazed treatment. The study site (38.87 N, - 99.38 W, Elevation 714 m) is located in the central Great Plains near the city of Hays, Kansas, about 400-km west of Kansas City. The third file contains monthly and annual climate data for the period 1891-1994 obtained from a weather station (38.87 N, -99.38 W, Elevation 613 m) located at the Hays grassland study site. 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).Annual above-ground net primary production (ANPP) was estimated conservatively by summing peak biomass of individual species. These values were 363 g/m2/year for ungrazed and 372 g/m2/year for grazed grassland plots. Annual below-ground net primary production (BNPP) was estimated as the sum of positive increments in total root biomass (including root crowns); 1,062 g/m2/year for ungrazed and 855 g/m2/year for grazed grassland plots.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "Earthdata Forum",
"@type": "vcard:Contact",
"hasEmail": "mailto:earthdata-support@nasa.gov"
}
|
| description | This data set contains three ASCII files (.txt format). Two files contain above- and below-ground biomass and productivity data for a mixed prairie grassland, one file for an ungrazed treatment and the other for a moderately grazed treatment. The study site (38.87 N, - 99.38 W, Elevation 714 m) is located in the central Great Plains near the city of Hays, Kansas, about 400-km west of Kansas City. The third file contains monthly and annual climate data for the period 1891-1994 obtained from a weather station (38.87 N, -99.38 W, Elevation 613 m) located at the Hays grassland study site. 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).Annual above-ground net primary production (ANPP) was estimated conservatively by summing peak biomass of individual species. These values were 363 g/m2/year for ungrazed and 372 g/m2/year for grazed grassland plots. Annual below-ground net primary production (BNPP) was estimated as the sum of positive increments in total root biomass (including root crowns); 1,062 g/m2/year for ungrazed and 855 g/m2/year for grazed grassland plots. |
| distribution |
[
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"title": "Data Information (PNG)",
"format": "PNG",
"mediaType": "image/png",
"downloadURL": "https://daac.ornl.gov/graphics/browse/project/square/npp_logo_square.png"
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{
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"title": "Data Information (ZIP)",
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"downloadURL": "https://data.ornldaac.earthdata.nasa.gov/protected/bundle/NPP_HYS_208.zip"
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{
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"downloadURL": "https://doi.org/10.3334/ORNLDAAC/208"
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"mediaType": "application/octet-stream",
"downloadURL": "https://search.earthdata.nasa.gov/search?q=NPP_HYS_208&ac=true"
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]
|
| identifier | 10.3334/ORNLDAAC/208 |
| keyword |
[
"earth-science-ecological-dynamics-biosphere-ecosystem-functions-biomass-dynamics",
"earth-science-ecological-dynamics-biosphere-ecosystem-functions-primary-production",
"earth-science-vegetation-biosphere-biomass"
]
|
| landingPage | https://search.earthdata.nasa.gov/search?q=NPP_HYS_208&ac=true |
| modified | 2026-02-10 |
| programCode |
[
"026:000"
]
|
| publisher |
{
"name": "ORNL_DAAC",
"@type": "org:Organization"
}
|
| spatial |
"[[{"WestBoundingCoordinate":-99.38,"NorthBoundingCoordinate":38.87,"EastBoundingCoordinate":-99.38,"SouthBoundingCoordinate":38.87}],"CARTESIAN"]"
|
| theme |
[
"Earth Science"
]
|
| title | NPP Grassland: Hays, USA, 1970, R1 |
