Record Display for the EPA National Library Catalog

RECORD NUMBER: 26 OF 123

OLS Field Name OLS Field Data
Main Title Indirect Sensing of Plant Canopy Structure with Simple Radiation Measurements.
Author Perry, S. G. ; Fraser, A. B. ; Thomson, D. W. ; Norma, J. M. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. ;Pennsylvania State Univ., University Park. Dept. of Meteorology. ;Nebraska Univ.-Lincoln. Dept. of Agronomy.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/328;
Stock Number PB89-206700
Additional Subjects Remote sensing ; Trees(Plants) ; Solar radiation ; Leaves(Botany) Forestry ; Canopies ; Sunlight ; Electromagnetic radiation ; Structures ; Models ; Radiation measurement
Holdings
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Status
NTIS  PB89-206700 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/18/1989
Collation 26p
Abstract
A technique for indirectly sensing canopy structure from simple, manageable measurements of sunlight transmission through the canopy is examined. The need for reliable measures of leaf area index and leaf angle distributions has been clearly established in the literature for many applications, in particular as inputs to canopy-atmosphere interaction models and dry deposition calculation techniques. The integral relationship between sunlight transmission and canopy structure is discussed and a numerical solution technique is described. Test results with simulated data and with actual field measurements support the conclusion that useful estimates of plant canopy structure can be derived from manageable radiation measurements within and beneath the canopy. (Copyright (c) 1988 Elsevier Science Publishers B.V.)