云南临沧地区小型兽类的群落生态学研究

Investigation on Community Ecology of Small Mammals in the Lincang Area of Yunnan

1997年 10～ 11月 ,我们对临沧地区永德大雪山自然保护区及临沧城区居民区、耿马城郊居民区和耿马城郊山坡耕作地等共分 8种不同生态环境 ,进行了小型哺乳兽类的调查 ,共获小兽 38种 14 86只 ,并对其进行了物种丰富度、群落结构、小兽物种多样性、均匀度、生态优势度等多项指标的统计分析。结果多样性指数最高为季风常绿阔叶林带(2 . 35 11)、最低为城市居民区 (0 . 4 2 36 ) ;优势度最高为城市居民区 (0 . 8180 ) ,最低为季风常绿阔叶林带 (0 . 12 27)。结合以往对该地区其它自然保护区的调查资料得知 ,该行政辖区共发现小型兽类 5目 12科 4 1属 6

An investigation on the fauna and ecology of small mammals in the Yongde Mt. Nature Reserve and resident area of Lincang outskirts, and suburbs resident area and suburbs hillside cultivated area of Gengma outskirts such eight ecological environments was carried out from Oct.～Nov. in 1997. And 1 486 specimens belonged to 38 species were collected in the survey. Statistics analysis of species richness and community structure and species diversity and evenness and ecological dominance indices were made. The species diversity index is the highest in the wet evergreen broadleaf forest ( 2.351 1 ) and the lowest in the outskits resident area ( 0.423 6 ). Ecological dominance index is the highest in the outskirts resident area (0.818 0) and the lowest in the wet evergreen broadleaf forest ( 0.122 7 ). Up to now, 68 species which belong to 41 genera, 12 families and 5 orders, have been found in the nature reserve together with those recorded previously.