Rapid estimation of coniferous forest leaf area index using a portable integrating radiometer

L. L. Pierce; S. W. Running

doi:10.2307/1941154

Rapid estimation of coniferous forest leaf area index using a portable integrating radiometer

L. L. Pierce, S. W. Running

W. A. Franke College of Forestry and Conservation

University of Montana

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233 Scopus citations

Abstract

Canopy transmittance was measured at 1200 and 1400 local solar time using an integrating radiometer on 7 coniferous forest stands in W Montana, ranging in projected leaf area index (LAI) from 1.7-5.3 m²/m². Transmittance of each 1 ha stand was measured at 96 000 points, yet measurement required <1 h because the instrument instantaneously integrates 80 radiometer measurements. The technique has a wide applicability given the range of LAIs, stand densities (450-4140 trees/ha) and illumination angles (32-57°) under which it was tested. -Authors

Original language	English
Pages (from-to)	1762-1767
Number of pages	6
Journal	Ecology
Volume	69
Issue number	6
DOIs	https://doi.org/10.2307/1941154
State	Published - 1988

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title = "Rapid estimation of coniferous forest leaf area index using a portable integrating radiometer",

abstract = "Canopy transmittance was measured at 1200 and 1400 local solar time using an integrating radiometer on 7 coniferous forest stands in W Montana, ranging in projected leaf area index (LAI) from 1.7-5.3 m2/m2. Transmittance of each 1 ha stand was measured at 96 000 points, yet measurement required <1 h because the instrument instantaneously integrates 80 radiometer measurements. The technique has a wide applicability given the range of LAIs, stand densities (450-4140 trees/ha) and illumination angles (32-57°) under which it was tested. -Authors",

author = "Pierce, {L. L.} and Running, {S. W.}",

year = "1988",

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AU - Running, S. W.

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AB - Canopy transmittance was measured at 1200 and 1400 local solar time using an integrating radiometer on 7 coniferous forest stands in W Montana, ranging in projected leaf area index (LAI) from 1.7-5.3 m2/m2. Transmittance of each 1 ha stand was measured at 96 000 points, yet measurement required <1 h because the instrument instantaneously integrates 80 radiometer measurements. The technique has a wide applicability given the range of LAIs, stand densities (450-4140 trees/ha) and illumination angles (32-57°) under which it was tested. -Authors

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JO - Ecology

JF - Ecology

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ER -

Rapid estimation of coniferous forest leaf area index using a portable integrating radiometer

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