摘要
运用模糊聚类方法，探讨豫西农作区鼠类群落分类及其与农田斑块生境的关系，比较百分率相似系数（ＰＳ）、相关系数（ｒ）和夹角余弦（Ｃｏｓ）３种相似指标。发现ｒ的聚类结果与农田斑块生境具显著的相依性（Ｐ＜０．０２５）。故将该地鼠类群落划分为棕色田鼠＋大仓鼠亚群落及大仓鼠＋棕色田鼠亚群落。同时，比较２个亚群落的物种数、多度和多样性Ｓｈａｎｎｏｎ指数的差异．
Studies on the rodent community of agricultural area of loess plateau Was made in the near 6 km2 site in Chengcun, Lingbao County from July to October, 1992 and from Aapril to November, 1993. Primary results are summarized as follows:1. The rodent community was composed of 12 species, i. e., Cricelulus triton, C.longicaudatus, Microtusmandrinus, Apodemusagrarius, A. peninsulae, Musmusculus,Rattus norevegicus, R. niviventer, Eutamias sibiricus, Spermophilusdauricus, Sciarotamias davidianus, Meriones merid ianus, M. mandarinus is burrowing , but the rest are not.2. Based on comparison among 3 kinds of species similary measurement including index of proportion similarity (PS), correlation coefficient (r ), and cosine of angle(Cos), the results of fuzzy clustering analyses with r were significantly explained by rodent distribution in patchy habitats using satistical test (P< 0. 025). The rodent community was divided into 2 sub-communities as follows: I. Microtus mandarinus+Cricetu lus trition; Ⅱ. C. triton +M. mandarinus.3. The sub-community I ranged from farmland, orchard to abandoned field, with 10species of which abundance of M. mandarinus was the highest, 71.1 %. The sub-community Ⅲ mainly were living in more than 3 year old abandoned field, in which C. triton was the dominant one among 11 species. The species diversity index of the sub-community Ⅱwas higher than that of the sub-community I
出处
《兽类学报》
CAS
CSCD
北大核心
1996年第1期67-75,共9页
Acta Theriologica Sinica
基金
国家"八五"科技攻关项目
关键词
鼠类群落
模糊聚类分析
农作区
黄土高原
Rodent community
Fuzzy clustering analyses
F Patchy habitats
Agricultural area
Loess plateau
