Biomass and nutrient accumulation in montane evergreen broad-leaved forest (Lithocarpus xylocarpus type) in Ailao Mountains, SW China

摘要

Montane evergreen broad-leaved forest was the natural vegetation of subtropical, mountainous central and southern Yunnan, SW China. Pristine natural forest, dominated by Fagaceae (Lithocarpus xylocarptss, Lithocarpus chintungensis and Castanopsis wattii), is still present at Ailao Mountain National Nature Reserve. Within this forest, older stands are of relatively low density, with scattered large trees, compared with stands of higher density. Biomass and nutrient content are examined in this paper for two stands. one each of relatively high and low density.