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NPP CROPLAND: GRIDDED ESTIMATES FOR THE CENTRAL U.S.A., 1982-1996

Entry ID: npp_cropland

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Summary

Abstract: The NPP Database contains documented field measurements of NPP for global terrestrial sites compiled from published literature and other extant data sources. The NPP Database contains biomass dynamics, climate, and site-characteristics data georeferenced to each intensive site. A major goal of the data compilation is to use consistent and standard well-documented methods to estimate NPP from the ... field data. Other important components of the database include a summary, investigator contact information, and a list of key references for each site. As far as possible, the original principal investigator or his/her successor has been contacted to review the data and documentation. The NPP Database currently contains detailed data for over 60 intensive study sites. A majority of these sites are grasslands, the remainder being tropical forests, boreal forests, and tundra study sites. Some combination of above-ground annual peak live biomass data and/or seasonal biomass dynamics data are available for all sites. Many sites also have data on below-ground biomass and/or turnover. Estimates of net primary productivity are included, where available, for individual sites, and as part of the NPP Summary tables. Climate and soils data are available for all sites in varying degrees of detail. The sites have been grouped according to vegetation maps based upon Bailey ecoregions, Holdridge Life-Zones, Matthews vegetation classes, and Olson World Ecosystem Complexes. Previously compiled multi-site data sets of georeferenced NPP estimates are also provided. NPP estimates are available from a number of different collections, containing more than 1700 sites but with less information available for each individual site as compared to the intensive sites. Records for these sites typically include an NPP value, latitude and longitude, original source of the data, and sometimes information on vegetation type, management, soils, and local climate. More information on the entire Net Primary Productivity Project can be found at the NPP home page, with links to further details on individual study sites or multi-site collections. Users are encouraged to browse these Web pages to find details of original studies, methodologies, and original research contacts. NPP data are available on-line from the ORNL Distributed Active Archive Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. Data Citation: Cite the data sets using the following reference format: Author, P. A., and M. B. Author. Year. Data Set Title. Available on-line from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. For example: Williamson, P., and J. Pitman. 1999. NPP Grassland: Beacon Hill, U.K. 1972-1973. Available on-line from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.

Related URL

Link: GET DATA

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 48.0

S: 35.0

E: -80.0

W: -98.0

Data Set Citation

Dataset Originator/Creator: HASKETT, J.PRINCE, S.D.STEININGER, M.STRAND, H.WRIGHT, R.

Dataset Title: NPP CROPLAND: GRIDDED ESTIMATES FOR THE CENTRAL U.S.A., 1982-1996

Dataset Release Date: 2001

Dataset Release Place: Oak Ridge, Tennessee, U.S.A.

Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center

Data Presentation Form: Online Files

Dataset DOI: doi:10.3334/ORNLDAAC/612

Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=612&term2attribut...

Temporal Coverage

Start Date: 1982-01-01

Stop Date: 1997-01-01

Location Keywords

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA

Science Keywords

BIOSPHERE > VEGETATION > BIOMASS

BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PRIMARY PRODUCTION

ISO Topic Category

BIOTA

Platform

FIELD INVESTIGATION

Instrument

CORING DEVICES

STEEL MEASURING TAPE

BALANCE

QUADRATS

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

NPP > Net Primary Productivity Database (ORNL)

CWIC > CEOS WGISS Integrated Catalog

Ancillary Keywords

NPP

EOSDIS

Data Set Progress

COMPLETE

Data Center

THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)

Data Center URL: http://daac.ornl.gov/
Dataset ID: 612

Data Center Personnel
Name: ORNL DAAC USER SERVICES OFFICE Phone: (865) 574-7447 Email: uso at daac.ornl.gov Contact Address: ORNL DAAC User Services Office Oak Ridge National Laboratory City: Oak Ridge Province or State: TN Postal Code: 37831-6407 Country: USA