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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
05/07/1993 |
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Data da última atualização: |
05/07/1993 |
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Autoria: |
VEIGA, A. de A. |
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Título: |
Desbastes em função da área basal. |
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Ano de publicação: |
1962 |
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Fonte/Imprenta: |
Silvicultura em São Paulo, São Paulo, v. 1, n. 1, p. 61-69, 1962. |
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ISSN: |
0583-3132 |
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Idioma: |
Português |
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Conteúdo: |
This paper deals with a method by the author, in order to conduct every thinning to the best way at regular intervals throughout the life of the stand. First of all, it is necessary to know the stand basal area per hectare without forgetting it is a criterium of determining the moment when all the trees are employing their maximum capacity of utilizing light, humidity and available nutrients. Since the forester has obtained the basal area by means of the percentual decrease he should begin the first thinning by cutting only the trees belonging to the intermediate and suppressed classes. The forester wants the largest number of trees per unit of area that will grow with the best form and speed. This is the reason why it is preferable to deal with dominant and condominant classes whose inherent qualities conduct the stand to its better possibilities. On the other hand we cannot forget the ratio of crown depth to total height, the crown space remaining as the true basis. As the forester knows, the more heat the faster the rate of decomposition, and the faster the decomposition the greater the amount of nitrogen released. This increased nitrogen supply is, according to several authors, of great value to the tree only if it can be used immediately. Though the stand should conduct it without opening it too much, in order to control the nitrogen. |
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Categoria do assunto: |
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Marc: |
LEADER 01717naa a2200133 a 4500
001 1286846
005 1993-07-05
008 1962 bl uuuu u00u1 u #d
022 $a0583-3132
100 1 $aVEIGA, A. de A.
245 $aDesbastes em função da área basal.
260 $c1962
520 $aThis paper deals with a method by the author, in order to conduct every thinning to the best way at regular intervals throughout the life of the stand. First of all, it is necessary to know the stand basal area per hectare without forgetting it is a criterium of determining the moment when all the trees are employing their maximum capacity of utilizing light, humidity and available nutrients. Since the forester has obtained the basal area by means of the percentual decrease he should begin the first thinning by cutting only the trees belonging to the intermediate and suppressed classes. The forester wants the largest number of trees per unit of area that will grow with the best form and speed. This is the reason why it is preferable to deal with dominant and condominant classes whose inherent qualities conduct the stand to its better possibilities. On the other hand we cannot forget the ratio of crown depth to total height, the crown space remaining as the true basis. As the forester knows, the more heat the faster the rate of decomposition, and the faster the decomposition the greater the amount of nitrogen released. This increased nitrogen supply is, according to several authors, of great value to the tree only if it can be used immediately. Though the stand should conduct it without opening it too much, in order to control the nitrogen.
773 $tSilvicultura em São Paulo, São Paulo$gv. 1, n. 1, p. 61-69, 1962.
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Embrapa Florestas (CNPF) |
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