Mowing Experiment Exotech Data (FIFE)

Light radiation striking a vegetative canopy interacts with individual phyto-elements (i.e., leaves, stems, branches) and the underlying substrate. The interaction depends on light quality, radiative form (direct or diffuse), illumination incidence angle, vegetative component optical properties and canopy architecture. Radiation is reflected, transmitted or absorbed. Mowing, grazing, and fertilization can affect the canopy architecture or optical properties of vegetation, thus changing the canopy reflectance. This study examined the response of spectral reflectance characteristics (using an Exotech radiometer) to canopies that were manipulated using simulated grazing and fertilization of plots. The spectral reflectance data set supports the original hypothesis of a curvilinear relationship between productivity and grazing intensity. Reflectances for the four MSS bands and the standard error for each are reported. These data were collected at two locations within the northwest quadrant of the FIFE study area during the growing season of 1987. Reflected radiation measurements were converted to radiances and reflectance factor. The reflectance factor is the ratio of the target reflected radiant flux to an ideal radiant flux reflected by an ideal Lambertian standard surface irradiated in exactly the same way as the target.

Data and Resources

Field Value
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier 10.3334/ORNLDAAC/56
landingPage https://search.earthdata.nasa.gov/search?q=fife_biology_mow_exo_56&ac=true
modified 2025-09-11
old-spatial [[{"WestBoundingCoordinate":-96.59,"NorthBoundingCoordinate":39.1,"EastBoundingCoordinate":-96.54,"SouthBoundingCoordinate":39.09}],"CARTESIAN"]
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 478b1e75dcd06531f9fd8c0593fde6dbea10386df3091dd87c5980ff48bfb664
source_schema_version 1.1
temporal 1987-05-30/1987-05-30
theme {"Earth Science"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • earth-science-atmospheric-radiation-atmosphere-reflectance
  • earth-science-vegetation-biosphere-canopy-characteristics
  • earth-science-vegetation-biosphere-leaf-characteristics
isopen False
license_id notspecified
license_title License not specified
maintainer Earthdata Forum
maintainer_email earthdata-support@nasa.gov
metadata_created 2025-09-23T19:31:27.130825
metadata_modified 2025-09-23T19:31:27.130829
notes Light radiation striking a vegetative canopy interacts with individual phyto-elements (i.e., leaves, stems, branches) and the underlying substrate. The interaction depends on light quality, radiative form (direct or diffuse), illumination incidence angle, vegetative component optical properties and canopy architecture. Radiation is reflected, transmitted or absorbed. Mowing, grazing, and fertilization can affect the canopy architecture or optical properties of vegetation, thus changing the canopy reflectance. This study examined the response of spectral reflectance characteristics (using an Exotech radiometer) to canopies that were manipulated using simulated grazing and fertilization of plots. The spectral reflectance data set supports the original hypothesis of a curvilinear relationship between productivity and grazing intensity. Reflectances for the four MSS bands and the standard error for each are reported. These data were collected at two locations within the northwest quadrant of the FIFE study area during the growing season of 1987. Reflected radiation measurements were converted to radiances and reflectance factor. The reflectance factor is the ratio of the target reflected radiant flux to an ideal radiant flux reflected by an ideal Lambertian standard surface irradiated in exactly the same way as the target.
num_resources 7
num_tags 11
title Mowing Experiment Exotech Data (FIFE)