【摘要】 在猫儿山自然保护区沿海拔梯度设置7个样地进行叶蜂调查.共采获叶蜂803头,隶属3科58属121种.统计分析表明,异鳞纹眶叶蜂(Claremontia sinobirmana Malaise)和南华平缝叶蜂(Nesoselandria southaWei)为优势种和广布种.不同海拔叶蜂群落的物种丰富度指数、Simpson多样性指数和Shannon-Wiener多样性指数均以中间海拔(1000~1500m)最高,分别为12.293、0.971和3.830;优势度指数则以高海拔最高.聚类分析显示,7个样地的叶蜂物种可以分为高海拔组(>2000m)和其它海拔组(<2000m).相关分析表明,降水量和植被种类是影响叶蜂多样性的主要因素.更多还原

【Abstract】 The sawfly diversity was investigated at seven sampling sites along an altitude gradient in the Mao’er Mountain National Nature Reserve of Guangxi in spring.A total of 803 sawfly specimen belonging to 121 species,58 genera and 3 families were collected,and the dominant and widespread species were Claremontia sinobirmana Malaise and Nesoselandria southa Wei.The maximum values of the species richness index,Simpson index and Shannon-Wiener index of sawfly communities occurred at the altitude of 1 000-1 500 m,being 12.293,0.971 and 3.830,respectively,while the dominance index was the highest at high altitude.The sawfly species at the seven sites were divided into two groups,i.e.,high altitude group(>2 000 m)and other altitude group(<2 000 m).Precipitation and vegetation type were the main factors affecting the sawfly diversity.更多还原