【摘要】 从2009年7月到2011年4月(春)每季度分别对映秀镇居民区采用夹夜法进行小兽调查,研究小兽组成、相对密度、物种多样性指数、均匀性指数等变量,分析震后小兽群落结构与时间动态。结果表明,居民区小兽相对密度为3.34%,主要包括2目2科4属7种,黄胸鼠(Rattusf lavipectus)和四川短尾鼩(Anourosorex squamipes)为优势种;从2009年7月到2011年4月居民区多样性指数降低,优势度指数升高,均匀性指数降低;小兽相对密度下降,峰值分别出现在2009年夏(17.14%)和2010年秋(5.00%)。地震后2a间映秀居民区小兽相对密度逐渐降低,未形成稳定群落结构,需要长时间监测。更多还原

【Abstract】 This study was conducted to investigate the community structure and the density of small mammals in Wenchuan County,Sichuan Province every quarter of a year from Jul.2009 to Apr.2011 in order to study the composition of small mammals,relative density,index of species diversity,index of evenness,rodents and disease,and to analyze the community structure density and temporal dynamics after the earthquake in Yingxiu Town.The result showed that the relative density of small mammals in residential region rate was 3.34%,including 2 orders 2 families 4 genera 7 species.Rattus flavipectus and A.squamipes were the dominant species;the density index of small mammals was declining every quater of a year from Jul.2009 to Apr.2011 in residential region in Yingxiu Town,the diversity index and evenness index were declining,dominance index was increased.The results showed the density of small mammals after the earthquake was declining,but the community structure was unstable,it was necessary to monitor the small mammals in Yingxiu area for long future time.更多还原