||Many ecologists are struggling to quantify the species richness in a particular landscape or region. The number of species increases with sample area. Species-area relationship is often used to estimate species richness of a particular region. This study used species-log (area) curves, corrected with Jaccard’s coefficients for within-vegetation type heterogeneity, to estimate species richness and to describe vascular plant species composition in Taiwan Forestry research Institute Tai-Ma-Lee Experimental Forest.|
In the study area, the author recorded 748 plant species, including 98 endemic species, 21 rare species and 36 naturalized species.
There are estimation of 701 species (95％ CI＝651~758 species) in the 583-ha natural forest area, 819 species (95％ CI＝744~889 species) in the 291-ha plantation area, 560 species (95％ CI＝508~641 species) in 8.1-ha forest road. As plantation area is not well-sampled, the total species number in the 947-ha study area could not be estimated. When use 0.1 Modified-Whittaker sampling techniques to assess plant diversity, it is possible to use elevation division, instead of vegetation type, to estimate species richness.