小相岭山系非飞行小型兽类物种多样性海拔分布格局  

Species Diversity and Distribution Pattern of Non-Volant Small Mammals Along Elevational Gradients in the Xiaoxiangling Mountains

作　　者：刘芝秀 周恩华 张勘 王大勇 胡杰[1] 李艳红[1] 吉晟男 LIU Zhixiu;ZHOU Enhua;ZHANG Kan;WANG Dayong;HU Jie;LI Yanhong;JI Shengnan(Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education),China West Normal University,Nanchong,Sichuan Province 637009,China;Sichuan Liziping National Nature Reserve Administration,Shimian,Sichuan Province 625400,China;Management Office of Sichuan Yele Nature Reserve,Mianning,Sichuan Province 615600,China;Chinese Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]西华师范大学西南野生动植物资源保护教育部重点实验室,四川南充637009 [2]四川栗子坪国家级自然保护区管理局,四川石棉625400 [3]四川冶勒自然保护区管理处,四川冕宁615600 [4]中国环境科学研究院,北京100012

出　　处：《四川动物》2022年第4期406-415,共10页Sichuan Journal of Zoology

基　　金：生物多样性调查评估项目(2019HJ209600106);西华师范大学英才项目(17YC024)。

摘　　要：为了解小相岭山系非飞行小型兽类物种丰富度的海拔梯度分布格局及物种更替情况,于2019年和2020年的7-9月通过夹日法对小相岭山系的小型兽类多样性及群落组成进行了调查,在海拔1 300~4 100 m段按照400 m的高差间隔设置样方53个,共捕获小型兽类317只,隶属于3目7科15属23种,其中,包括新记录滇攀鼠Vernaya fulva。小相岭山系非飞行小型兽类的物种丰富度和物种多样性在2 500~2 900 m出现峰值,并随海拔的升高递减,显示出右偏倚的中峰分布格局。相邻海拔间的物种更替也表现出β多样性在中海拔段更高。此外,小相岭山系整个海拔梯度上的群落相似性明显随海拔距离增加而衰减。本研究结果表明,在今后的生物多样性保护和管理工作中,需重点关注中海拔段。In order to understand the species richness patterns along elevational gradients and the distribution pattern of species alternation of non-volant small mammals in the Xiaoxiangling Mountains,we investigated the diversity and commu-nity composition of small mammals by snap traps from July to September in 2019 and 2020.A total of 53 sampling plots were set along the elevational gradient from 1300 m to4100 m with an interval of 400 m.Finally,317 individuals belong-ing to 23 species(including the new record species Vernaya fulva),15 genera,7 families,and 3 orders were captured.The species richness and diversity of small mammals peaked at the elevation of 2500--2900 m,and then decreased gradu-ally with the increase of the elevation,displaying a single hump-typed distribution pattern.Species alternation between ad-jacent elevations also showed higherβ-diversity at mid-elevation.Furthermore,the community similarity along the whole gradient of the Xiaoxiangling Mountains declined with the increase of elevational distance.This study suggests that special attention should be paid to the intermediate-elevation area for biodiversity conservation and management in the future.

关 键 词：小型兽类 物种丰富度 物种多样性 小相岭山系 群落结构 

分 类 号：Q958.1[生物学—动物学] Q959.8