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Titolo:
Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest
Autore:
Ruel, JC; Messier, C; Doucet, R; Claveau, Y; Comeau, P;
Indirizzi:
Univ Laval, Fac Foresterie & Geomat, St Foy, PQ G1K 7P4, Canada Univ Laval St Foy PQ Canada G1K 7P4 & Geomat, St Foy, PQ G1K 7P4, Canada
Titolo Testata:
FORESTRY CHRONICLE
fascicolo: 4, volume: 76, anno: 2000,
pagine: 633 - 642
SICI:
0015-7546(200007/08)76:4<633:MIOGRO>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLACK SPRUCE STANDS; NORTHWESTERN BRITISH-COLUMBIA; NATURAL LIGHT GRADIENT; PINE PINUS-STROBUS; CROWN ARCHITECTURE; DOUGLAS-FIR; APICAL DOMINANCE; JUVENILE GROWTH; HEIGHT GROWTH; BALSAM FIR;
Keywords:
advance regeneration; careful logging; vigour; clearcutting;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
95
Recensione:
Indirizzi per estratti:
Indirizzo: Ruel, JC Univ Laval, Fac Foresterie & Geomat, St Foy, PQ G1K 7P4, Canada Univ Laval St Foy PQ Canada G1K 7P4 , St Foy, PQ G1K 7P4, Canada
Citazione:
J.C. Ruel et al., "Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest", FOREST CHRO, 76(4), 2000, pp. 633-642

Abstract

Regeneration of forest stands through the preservation of existing advanceregeneration has gained considerable interest in various regions of North America. The effectiveness of this approach relies on the capacity of regeneration to respond positively to overstory removal. Responses of advance regeneration to release is dependent on tree characteristics and site conditions interacting with the degree of physiological shock caused by the suddenchange in environmental conditions This paper presents a review of the literature describing the relationships between morphological indicators and the advance regeneration response to canopy removal. It focus es primarily on the following species: jack pine (Pinus banksiana Lamb.), lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.), black spruce (Picea mariana(Mill. ) B.S.P.), interior spruce (Picea glauca x engelmannii), white spruce (Picea glauca (Moench) Voss), balsam fir (Abies balsamea (L. ) Mill.), andsubalpine fir (Abies lasiocarpa (Hook. ) Nutt). Pre release height growth has been found to be a good indicator of post-release response for many species. Live-crown ratio also appears to be a good indicator of vigour for shade-tolerant species. The ratio of leader length to length of the longest lateral at the last whorl could serve to describe the degree of suppression before harvest for shade-tolerant species. Number of nodal and internodal branches or buds has been found to be related with vigour for many species. Logging damage has been shown to be an important determinant of seedling response to overstory removal. In contrast. height/diameter ratio has limited value for predicting response to release since it varies with site, speciesand other factors. No clear relationship between age, height at release and response to release could be demonstrated. This paper also suggests the use of combined indicators and critical threshold values for these indicators.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:41:07