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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/08/1994 |
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Data da última atualização: |
25/06/2025 |
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Autoria: |
LI, X. W.; STRAHLER, A. H. |
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Título: |
Modeling the gap probability of a discontinuous vegetation canopy. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
IEEE - Transactions on Geoscience and Remote Sensing, v. 26, n. 2, p. 161-170, 1988. |
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Idioma: |
Inglês |
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Conteúdo: |
A model is presented for the gap probability of a discontinuous vegetation canopy, such as forest, savanna, or shrubland. The case in which the distribution of individual canopy sizes and shapes is known and individual canopies are randomly distributed but do not overlap, and the case in which the canopies to intersect and/or overlap such that foliage density remains constant with the overlap area are both considered, although an exact solution is provided only for the latter. A comparison of modeled gap probabilities with observed gap probabilities for a Maryland (US) pine stand (as taken from the literature) shows good agreement for zenith angles of illumination up to about 45 degrees . Above 45 degrees , the fit worsens, presumably because the horizontal branch structure of the pine canopy is less attenuating as the illumination angle approaches the horizon. |
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Palavras-Chave: |
Abertura de dossel. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 01333naa a2200145 a 4500
001 1280037
005 2025-06-25
008 1988 bl uuuu u00u1 u #d
100 1 $aLI, X. W.
245 $aModeling the gap probability of a discontinuous vegetation canopy.$h[electronic resource]
260 $c1988
520 $aA model is presented for the gap probability of a discontinuous vegetation canopy, such as forest, savanna, or shrubland. The case in which the distribution of individual canopy sizes and shapes is known and individual canopies are randomly distributed but do not overlap, and the case in which the canopies to intersect and/or overlap such that foliage density remains constant with the overlap area are both considered, although an exact solution is provided only for the latter. A comparison of modeled gap probabilities with observed gap probabilities for a Maryland (US) pine stand (as taken from the literature) shows good agreement for zenith angles of illumination up to about 45 degrees . Above 45 degrees , the fit worsens, presumably because the horizontal branch structure of the pine canopy is less attenuating as the illumination angle approaches the horizon.
653 $aAbertura de dossel
700 1 $aSTRAHLER, A. H.
773 $tIEEE - Transactions on Geoscience and Remote Sensing$gv. 26, n. 2, p. 161-170, 1988.
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