中文摘要：

采用样地调查法研究了紫金山地区4种植被类型下的蚂蚁种群,共采集蚂蚁4 052只,隶属于2亚科14属15种。分析发现：针阔混交林内的蚂蚁种类最多为14种,林内物种多样性指数和均匀度指数均为最高,分别为2.041 6和0.773 6,优势度最低为0.158 8,优势种为日本弓背蚁（占24.80%）、宽结大头蚁（占17.98%）、双针棱胸蚁（占17.57%）和黄足立毛蚁（占14.31%）。草地的蚂蚁种类有10种,物种多样性指数和均匀度指数均为最低,分别为1.147 5和0.498 4,其优势度指数为0.413 4,仅次于阔叶林的蚂蚁种群优势度指数0.415 1,其优势种为双针棱胸蚁（占54.13%）和宽结大头蚁（占34.27%）。紫金山地区4种植被类型下的蚂蚁种群相似性为中等相似。

英文摘要：

Sample plot investigation method was conducted to survey the ant populations and species diversity under four types of vegetation in Zijin Mountain in Nanjing.4 052 specimens which belonged to 2 subfamilies,14 genera and 15 species were collected.Comparative results showed that species number of 14,species diversity index of 2.041 6 and evenness index of 0.773 6 were the highest in the coniferous and broad leaf forest,the dominance was only 0.158 8.The dominant species of ants were Camponotus japonicus Mayr（24.80 %）,Pheidole nodus Smith（17.98 %）,Pristomyrmex pungens Mayr（17.57 %） and Paratrechina flavipes（Smith）（14.31 %）.Ten species of ants were collected from grassland.The diversity index and evenness index were 1.147 5 and 0.498 4 respectively.They were the lowest among these four vegetations.The dominance index was 0.413 4 only next to the dominance index of 0.415 1 in broad leaf forest.The dominant species were P.pungens Mayr（54.13 %） and P.nodus Smith（34.27 %）.The ant populations similarity of the four vegetation types were in medium degree in Zijin Mountain area.