内蒙古半荒漠区啮齿动物群落分类及其多样性研究  

Classification and diversity of rodent communities in semi-arid region of Inner Mongolia

作　　者：武晓东[1] 薛河儒[1] 苏吉安[1] 施大钊[1] 王万中[1] 

机构地区：[1]内蒙古农牧学院,呼和浩特010018

出　　处：《生态学报》1999年第5期737-743,共7页Acta Ecologica Sinica

摘　　要：自1988～1993年在内蒙古半荒漠区约11万km2的调查区域内共设置259个样方,布放有效夹日131109个,捕获啮齿动物19种。在此基础上,用其捕获率作为分类量纲,以样方-种的捕获率组成259×19的原始数据矩阵,应用快速聚类法进行鼠类群落划分,根据分类结果,并结合调查区域内各种地带性植被的特点将该地区啮齿动物划分为9个不同的鼠类群落。即群落:戈壁五趾跳鼠+五趾跳鼠+长爪沙鼠群落,群落生境为半荒漠区内典型的高平原、丘陵荒漠草原;群落:三趾跳鼠+子午沙鼠+小毛足鼠群落,群落生境为沙地,主要分布于阴山北麓的覆沙地带;群落;草原黄鼠+五趾跳鼠+长爪鼠群落,群落生境为半荒漠区内平原丘陵典型草原和山地典型草原;群落:赤颊黄鼠+黑线毛足鼠+五趾跳鼠群落,群落生境为戈壁针茅-隐子草草原;群落:戈壁五趾跳鼠+三趾跳鼠+蒙古羽尾跳鼠群落,群落生境为草原化荒漠,主要以强旱生灌木和半灌木组成;群落:黑线仓鼠+长爪沙鼠+小毛足鼠群落,群落生境为人工草地及阴山北麓山顶种植荞麦和莜麦的农田;群落:小毛足鼠+三趾跳鼠+长爪沙鼠群落,群落生境为典型荒漠草原重度退化的短花针茅冷蒿草场;群落:长尾仓鼠+大林姬鼠+棕背群落,群落生境为阴山山脉中段的次生林地如五当召、大桦背及蛮汉山;An investigation of rodent community in the semi arid region of Inner Mongolia was conducted from 1988 to 1993 using the trap night method and the fast cluster method with trap ratio as classificatory dimension.Based on the results of classificating and different vegetation characteristics the rodent communities in the region were divided into 9 types.Shannon Wiener diversity index and Pielou evenness of the different communities were compared.The results showed that the diversity index of community Ⅰ was the highest(2.4315) Its evenness index was 0.8412.The results indicated that rodent community diversity and evenness of rodent species distribution were very high in the interlock region of the typical plateau and the hilly in the transitional zone of desert and steppe of Inner Mongolia semi arid region.The diversity and evenness in this community were the lowest(0.8134 and 0.3522).It indicated that the diversity of the community of desert steppe was low and rodent distribution was uneven.

关 键 词：内蒙古 半荒漠区 啮齿动物群落 分类 多样性 

分 类 号：Q959.837[生物学—动物学]