Abstract:The relationship between the number of species and the area sampled is one of the oldest and best-documented patterns in community ecology. Species-area relationships have been widely used to examine the latitudinal gradient in species diversity, the effect of habitat loss on species diversity and the impact of exotic species on species diversity. An equation of the form S=cA~z describing more precisely the species-area relation for plant species in smaller area is proposed as a result of intensive examinat...