FOREST STRUCTURE UNDER HUMAN INFLUENCE NEAR AN UPPER-ELEVATION VILLAGE IN NEPAL
作者： Gary Howard Bolton
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摘要: Indigenous human use of forest products may be altering upper-elevation structure and resource availability in Nepal. Subsistence villagers extract hand-cut treeleaf fodder for livestock, fuelwood, poles construction herders’ shelters. In a broadleaf evergreen montane west-central Nepal, I described tree species composition size-class structures, investigated relationships among patterns metrics use. Mean (SE) density trees > 10 cm dbh was 817 (30) stems ha mean total basal area 44 (3.2) m ha. Cluster analysis data 32 suggested the presence three communities: Symplocos-Quercus community, Symplocos-mixed Rhododendron-Symplocos community. Tree frequency distributions most abundant species, S. ramosissima, differed significantly communities. Size-class important oak suggest Quercus lamellosa is decline, but Q. oxyodon semecarpifolia reproducing successfully. diameters both ramosissima Lindera pulcherrima were inversely related to cutting index product harvest intensity. Cutting correlated with distance village elevation. Ordination by principal components pole, tree, densities
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