森林采伐对平武大熊猫栖息地的影响

20 0 1年 6月— 2 0 0 2年 5月间 ,采用系统样地方法 ,对四川平武王朗自然保护区和黄羊熊猫观测站采伐和未采伐基地中大熊猫活动区域和非活动区域植被群落结构变化进行调查。结果表明 :未采伐区大熊猫活动区域的物种数、物种丰富度、竹子更新能力、竹子密度、最大胸径的平均值均高于未采伐的大熊猫非活动区域 ;采伐区大熊猫活动区域的物种丰富度、物种优势度、物种多样性、单株竹生物量、竹子密度、样地平均竹子盖度、均高度、平均胸径、最大胸径的平均值均高于采伐后大熊猫非活动区域。森林采伐导致大熊猫栖息地物种丰富度、物种优势度、物种多样性、竹子密度、样地平均竹子盖度等因子下降 ,对大熊猫的适应性程度及生境质量产生了一定程度的影响。

Impact of Logging upon the Habitat of Giant Panda in Pingwu County, Sichuan, China

From Jun.2001 to May 2002, vegetations in logged and un_logged area, include those used and not used area by Giant Panda, were systematically sampled and studied at Wanglang National Nature Reserve and Huangyang Giant Panda Monitoring Station, Pingwu County, Sichuan, China. The results showed that, at un_logged areas, number of species, the average of species richness, species frequent, bamboo generation ability, bamboo density and maximum DBH at the area used by Giant Panda were higher than that of unused areas. Comparatively, at logged areas, the average of species richness, species dominant, diversity, bamboo biomass, bamboo density, bamboo canopy density, average DBH and maximum DBH at the areas used by Giant Panda were higher than that of unused area. Logging in the Giant Panda habitat caused the decline of species richness, species dominant, diversity, bamboo density, bamboo canopy density, and had an influence on the Giant Panda's adaptability and the quality of its habitat.