The order of street grassland type diversity indices from higher to lower is : lawn street type > footway tree street type > pavement grassland street type > tree ( planted in pavement and mid - street border ) street type > tree in mid - street border street type > color grassland in street pavement street type color grassland ( planted in pavement and mid - street border ) street type > lawn in mid - street border street type . 按街道绿地类别多样性指数从小到大排列的8个街道类型依次为:草坪街道类型、行道树街道类型、便道街道类型、乔木(便道+路心池)街道类型、路心池乔木类型、便道色块类型、色块(便道+路心池)街道类型、路心池草坪街道类型。