【摘要】 通过典型样地调查,对西安镇不同级别道路绿地的植物物种丰富度、多样性指数进行了比较分析。结果表明:在西安镇道路绿地中,乔木层的Simpson指数(D)在0.3～0.6之间、Shannon-Weiner指数(H)在0.5～1.5之间,灌木层的Simpson指数(D)在0.3～0.8之间、Shannon-Weiner指数(H)在0.7～2.0之间,草本层的Simpson指数(D)在0.5～1.0之间、Shannon-Weiner指数(H)在1.5～4.0之间,说明西安镇道路绿地乔木层和灌木层多样性指数偏低,草本层植物多样性指数较高。更多还原

【Abstract】 Through typical plots investigation,indices of species richness and diver-sity of the roads with different levels in Xi’an Township,Liaoning Province,China were examined.The results showed the values of Simpson index(D) of the tree layer were between 0.3 to 0.6,those of Shannon-Weiner index(H) were 0.5 to 1.5.The values of D of shrub layer were between 0.3 to 0.8,and those of H were 0.7 to 2.0.For herb layer,the values of D were 0.5 to 1.0,and those of H were 1.5 to 4.0.The data indicated that the diversity indices in tree and bush layers were lower,and higher in herb lay.更多还原