Application and Adaptability Evaluation on Main Afforestation Tree Species inTongxiang

Investigations were made on tree and shrub species for afforestation in Tongxiang, Zhejiang province, and evaluation was made on their adaptability by plant average growth index, frequency analysis and cluster analysis method. The results showed that there were 41 arbor species and 25 shrub species. The frequency of Cinnamomum camphora and Ligustrum lucidum was the highest in the arbor species, and that of Nerium indicum and Photinia × fraseri was the highest in shrub species. The average growth index of 31 arbor species and 22 shrub species were over 80. Twenty arbor species, like C. camphora, Metasequoia glyptostroboides, Elaeocarpus decipiens, etc. had advantages of higher frequency and good growth, while shrub species of N. indicum, P.× fraseri, Euonymus japonicus, Pittosporum tobira had the same condition. The investigation demonstrated that growth of L. lucidum, Cedrus deodara, Sabina chinensis cv. kaizuca, Rhododendron simsii and L. vicaryi was poor. Advices were put forwarded to reduce application of poor growth species.