PROVE Land Cover and Leaf Area of Jornada Experimental Range, New Mexico, 1997
Field measurement of shrubland ecological properties is important for both site monitoring and validation of remote-sensing information. During the NASA Earth Observing System Prototype Validation Exercise (PROVE) at the Jornada Experimental Range, New Mexico, on May 20-30, 1997, we calculated plot-level plant area index, leaf area index, total fractional cover, and green fractional cover with data from four instruments: (1) a Dycam Agricultural Digital Camera (ADC), (2) a LI-COR LAI-2000 plant canopy analyzer, (3) a Decagon sunfleck ceptometer, and (4) a laser altimeter. Estimates from the LAI-2000 and ceptometer were very similar (plant area index 0.3, leaf area index 0.22, total fractional cover 0.19, green fractional cover 0.14), but the ADC produced values 5 to 10% higher. Laser altimeter values, depending on the height cutoff used to establish total fractional cover, were either higher or lower than the other instruments' values: a 10-cm cutoff produced values approximately 80% higher, whereas a 20-cm cutoff produced values approximately 30% lower.
Complete Metadata
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| accessLevel | public |
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|
| description | Field measurement of shrubland ecological properties is important for both site monitoring and validation of remote-sensing information. During the NASA Earth Observing System Prototype Validation Exercise (PROVE) at the Jornada Experimental Range, New Mexico, on May 20-30, 1997, we calculated plot-level plant area index, leaf area index, total fractional cover, and green fractional cover with data from four instruments: (1) a Dycam Agricultural Digital Camera (ADC), (2) a LI-COR LAI-2000 plant canopy analyzer, (3) a Decagon sunfleck ceptometer, and (4) a laser altimeter. Estimates from the LAI-2000 and ceptometer were very similar (plant area index 0.3, leaf area index 0.22, total fractional cover 0.19, green fractional cover 0.14), but the ADC produced values 5 to 10% higher. Laser altimeter values, depending on the height cutoff used to establish total fractional cover, were either higher or lower than the other instruments' values: a 10-cm cutoff produced values approximately 80% higher, whereas a 20-cm cutoff produced values approximately 30% lower. |
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| identifier | 10.3334/ORNLDAAC/665 |
| keyword |
[
"earth-science-land-use-land-cover-land-surface-land-use-land-cover-classification",
"earth-science-land-use-land-cover-land-surface-land-use-land-cover-classification-vegetation-in",
"earth-science-vegetation-biosphere-canopy-characteristics",
"earth-science-visible-wavelengths-spectral-engineering-visible-imagery"
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|
| landingPage | https://search.earthdata.nasa.gov/search?q=jornada_landcover_lai_665&ac=true |
| modified | 2026-02-17 |
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"[[{"WestBoundingCoordinate":-106.75,"NorthBoundingCoordinate":32.5,"EastBoundingCoordinate":-106.75,"SouthBoundingCoordinate":32.5}],"CARTESIAN"]"
|
| temporal | 1997-05-13/1997-05-13 |
| theme |
[
"Earth Science"
]
|
| title | PROVE Land Cover and Leaf Area of Jornada Experimental Range, New Mexico, 1997 |
