唐家河国家级自然保护区川金丝猴冬季栖息地选择

2009年12月至2010年2月,对唐家河自然保护区内的一群(约60只)川金丝猴群采用直接跟踪观察,并结合植物样方调查对该猴群冬季栖息地选择进行了初步研究。根据猴群的活动位点,设置了75个20m×20m的植物样方,测定了12个生态因子(植被类型、乔木的胸径、郁闭度、乔木的高度、海拔、坡度、坡向、坡位、坡形、距水源距离、乔木密度、灌木盖度)。研究发现,冬季猴群主要在海拔2000～2500m、乔木平均胸径11～30cm、乔木平均树高为10～29m、乔木密度为20～40棵/20m×20m之间的落叶阔叶林和针阔混交林的阳坡中活动,还偏好在郁闭度为25%～49%、坡度为6°～20°、坡形为凸坡和复合坡、坡位为脊中部和下部、距水源距离0～300m的生境中活动。研究表明,冬季的食物资源、气候条件是影响川金丝猴群栖息地选择的主要生态因子。

Habitat Selection in Winter by Rhinopithecus roxellana at Tangjiahe National Nature Reserve

We studied habitat selection in winter of a Rhinopithecus roxellana group at Tangjiahe National Nature Reserve from December 2009 to February 2010 via direct observation and vegetation survey.Twelve ecological variables were measured from seventy-five 20 m×20 m plots where the monkey group frequently presented.These variables included vegetation type,DBH(diameters of breast height of trees),canopy cover,tree height,elevation,slope degree,slope aspect,slope position,slope type,the distance to water resource,tree density,shrubs canopy.Results indicated that R.roxellana chose the deciduous broadleaf forest and mixed conifer-broadleaf forest at the altitude from 2000 m to 2500 m,sunny slope,with mean DBH of 11~30 cm and mean height of 10~29 m.Meanwhile,results also indicated that the monkey group preferred to habitat with canopy 25%~49%,slope degree 6°~20°,convex slope and the distance to water 0~300 m.To sum up,food resource and climate were the two main factors which influenced habitat selection of R.roxellana in winter.