川中方山浅丘地区鼠形小兽群落结构及其变动的研究  

Structure of small mammal community and its periodicfluctuations in the central Sichuan square hills

作　　者：廖文波[1] 胡锦矗[1] 李操[1] 刘涛 将北平 

机构地区：[1]西华师范大学珍稀动植物研究所,四川南充637002 [2]南充市第十二中学校,四川南充637002 [3]南充市防疫站

出　　处：《河北农业大学学报》2005年第2期88-93,共6页Journal of Hebei Agricultural University

基　　金：国家自然科学基金资助项目(30170148);四川省重点学科重点资助项目(SZD0420)

摘　　要：对川中方山浅丘地区室内、外生境的鼠形小兽群落结构及其时期变动进行了研究,结果表明:两种生境群落的物种数、多样性指数、均匀性指数、生态优势度4个变量均不是保持在一个稳定的水平,而是处于明显的时期交替升降变动过程;室内生境群落的多样性指数和均匀性指数第1时期最大,第2时期最小,生态优势度第1时期最小,第2时期最大;室外生境群落多样性指数和均匀性指数第1时期最低,第2时期最高,生态优势度第1时期最高,第2时期最低,室内、外生境的多样性指数和均匀性指数分别与生态优势度呈显著负相关;室内群落鼠形小兽优势种褐家鼠数量年变动为周期性波动,室外群落鼠形小兽优势种微尾、大足鼠与黑线姬鼠数量年变动均为周期性波动;室内群落鼠形小兽优势种褐家鼠相对密度与室外群落优势种微尾呈不显著负相关,与黑线姬鼠呈不显著正相关,但与大足鼠呈极显著正相关.The structure of small mammal community and its periodic fluctuations were studied in the central Sichuan square hills from 1976 to 2004. Trapping night method was used in two investigate sites located indoors and outdoors. The results showed that the 4 variables of small mammal community, including the number of species, diversity index, evenness index and dominant degree of ecology fluctuated significantly during the 6 period in the two sites,In the indoor site, the diversity index and evenness index were maximum in the first period, and were minimum in the second period, but the dominant degree of ecology was minimum in the first period and was maximum in the second period; In the outdoor site, the diversity index and evenness index were minimum in the the first period and were maximum in the second period, the dominant degree of ecology was maximum in the first period and was minimum in the second period; there was the significantly negatively correlate between the diversity index, evenness index and the dominant degree of ecology; The fluctuations about capturing quantity of dominant species (Rattus norvegicus) in the small mammal community of indoor site was periodic (s>0.5), and the fluctuation of dominant species (Anourosorex squamipes, Rattus nitidus and Apodemus agrarius) in the small mammal community of outdoor site were periodic respectively too (s>0.5), the relative densities of Rattus norvegicus indoor site correlated insignificantly to the relative densities of dominant species (Anourosorex squamipes) in outdoor site(r=-0.150, P>0.05), but correlated significantly to the relative densities of Rattus nitidus(r=0.929, P<0.01), and there were insignificant correlations for both the relative densities of Rattus norvegicus and Apodemus agrarius (r=0.275, P>0.05).

关 键 词：鼠形小兽 群落结构 变动 室内 室外 

分 类 号：Q958.1[生物学—动物学]