Modeling gap probability in discontinuous vegetation canopiesIn the present model for the gap probability of a discontinuous vegetation canopy, the assumption of a negative exponential attenuation within individual plant canopies will yield a problem involving the distribution distances within canopies through which a ray will pass. If, however, the canopies intersect and/or overlap, so that foliage density remains constant within the overlap area, the problem can be approached with two types of approximations. Attention is presently given to the case of a comparison of modeled gap probabilities with those observed for a stand of Maryland pine, which shows good agreement for zenith angles of illumination up to about 45 deg.
Document ID
19870066002
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Li, Xiaowen (Hunter Coll. New York, NY, United States)
Strahler, Alan H. (Hunter College New York, United States)