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Field study measures canopy height and density in Himalayan forests, indicating species adaptation to altitude.
The moist temperate conifer forests in Pakistan are located between N 34°38.38ʹ latitudes and E 73°33.11ʹ longitude. The elevation ranges from 1500m to 3000m with a rainfall from 400mm to 800mm. The forest consist of mixture of evergreen Pinus wallichiana, Cedrus deodara, Abies pindrow and Picea smithiana with little admixture of broadleaved trees. All these species are capable of attaining good height (27-35m), very considerable girth (44-48cm). Stem and crown parameters were measured for 2880 trees between 2000- 2700m altitude. DBH and BA increased with increase in elevation while tree height, crown length, crown surface area, crown volume and tree density decreased as elevation increased. Species specific behavior and changing pattern of canopy attributes in relation to altitude in these forests are discussed.
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