湖北林业科技

The indices of protection rate, vegetative growth, reproductive growth and stress resistance were investigated and analyzed based on ex-situ conservation test established for 19 rare tree species in Three Gorges Botanical Garden. The subordinative function method was employed to evaluate the adaptability of these species for introduction, thereby providing germplasm resources for establishment of timber forests, landscape forests or ecological forests within the region's ecological environment.The results indicated that adaptability index for Corylopsis stelligera, Corylus chinensis, and Calycanthus chinensis exceeds 0.81, suggesting high adaptability. Additionally, the adaptability index for Taiwania cryptomerioides, Manglietia patungensis, Euscaphis japonica, Aesculus chinensis var. wilsonii, Phellodendron chinense, Liriodendron chinense, and Phellodendron amurense ranges from 0.61 to 0.81, also indicating good adaptability as well.The tree species identified as effective for ex-situ protection include Corylus chinensis, Aesculus chinensis, Corylopsis stelligera, Manglietia patungensis, Calycanthus chinensis, Phellodendron amurense, Liriodendron chinense, Cercidiphyllum japonicum（USA）, Taiwania cryptomerioides, Euscaphis japonica, and Phellodendron chinense.