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机构地区:[1]长江师范学院生命科学与技术学院,涪陵408100 [2]重庆市林业局,重庆400015 [3]西华师范大学珍稀动植物研究所,南充637002
出 处:《林业科学》2011年第4期121-128,共8页Scientia Silvae Sinicae
基 金:重庆市教委科学技术研究项目(KJ061304);重庆市高校优秀中青年骨干教师资助计划资助;中国欧盟生物多样性项目重庆生物多样性保护和能力建设项目(00060222)
摘 要:2007年3—5月,在金佛山自然保护区调查黑叶猴对生境的选择和利用情况,采用资源选择函数和资源选择指数进行分析,结果表明:影响黑叶猴生境选择的关键因子是上层乔木郁闭度、灌木胸径、人为干扰、洞穴距离。黑叶猴喜欢在郁闭度大于0.5、乔木和灌木密度大于21棵.(400 m2)-1、灌木胸径大于8 cm、人为干扰大于1 000 m、洞穴距离小于500 m、水源距离小于250 m、南坡的乔木-灌木混交林活动。黑叶猴的生境资源选择函数为:logit(P)=-21.964+2.126×DBH+2.108×CA+2.081×HD-1.829×DC(DBH为灌木胸径,CA为上层乔木郁闭度,HD为人为干扰距离,DC为洞穴距离)。黑叶猴对生境的选择概率为:P=elogit(P)/(1+elogit(P))。Habitat selection of Francois' Langur (Trachypithecus francoisi francoisi)was studied by using Resource Selection Functions and Resource Selection Index in the Jinfo Mountain Natural Reserve from March to May of 2007.The results indicated that the key factors notably influencing habitat selection were canopy density,shrub size,human disturbance and distance of cave.Francois' Langurs preferred the tree-shrub forests in the area studied with higher canopy density(CA)(0.5),higher density of tree and shrub [21 culms·(400 m2)-1],greater shrub DBH(8 cm),far from human disturbance (HD) (1 000 m),closer the cave [the distance of cave (DC) 500 m] and near water source (250 m).Francois' Langurs preferred habitats with a southward aspect.Resource selection functions is a log-linear model: logit (P)=-21.964+2.126×DBH+2.108×CA+2.081×HD-1.829×DC.From this model,we can estimate a habitat selection probability: P=elogit (P)/(1+elogit(P)).
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