Aspen Bibliography

Title

On the estimation of leaf size and crown geometry for tree canopies from hotspot observations

Document Type

Article

Journal/Book Title/Conference

Journal of Geophysical Research D

Volume

102

Issue

D24

First Page

29543

Last Page

29554

Publication Date

1997

Abstract

A computer-graphic based model for radiation interception in vegetation canopies is used to investigate the feasibility of estimating leaf size and crown size,for deciduous and coniferous trees,from canopy reflectance in the hotspot region.For deciduous trees, as represented by aspen trees, it appears that under certain conditions one can estimate leaf size;we specify optimal Sun-view geometry,wavelength,and index, which can minimize the impact of other structural parameters(e.g., leaf area index, leaf angle distribution,and interplant spacing)for the most accurate estimation of leaf size. However,for coniferous trees an accurate estimation of crown size seems unlikely,except possibly for sparsely spaced canopies.