Acclimation of Natural and Planted Amabilis Fir to Clearcut and Stand Edge Microclimates on a Coastal Montane Reforestation Site

Résumé du livre

Describes a field study whose objective was to compare the physiological and morphological performance of natural (advance) and planted amabilis fir (Abies amabilis (Dougl.)) regeneration in response to a transition in microclimate from the understory of an old-growth montane forest into the stand edge and also into an adjoining clearcut. The study site, located on eastern Vancouver Island, was clear-cut in 1989 and fall-planted with yellow cedar (Chamaecyparis nootkatensis) in 1991. Amabilis fir nursery stock was planted at the site in April 1993. A climate station installed at each of three 75-by-5-metre plots monitored various environmental parameters such as air temperature, relative humidity, and photosynthetically active radiation. Other measurements made at the site included seedling photosynthesis, transpiration, xylem water potential, foliar nitrogen/phosphorus/potassium, leaf area, and seedling height.