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《ACTA PHYTOECOLOGICA SINICA》 1999-01
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DIFFERENTIATION OF LIGHT ECOLOGICAL ADAPTABILITY AMONG POPULATIONS OF LIRIODENDRON CHINENSE IN THE PROCESS OF BEING ENDANGERED

He Shan’an Liu Youliang Hao Riming and Qian Junqiu (Jiangsu Provincial Key Laboratory for Plant Ex situ Conservation,Institute of Botany,Jiangsu Province and Chinese Academy of Sciences,Nanjing 210014)  
Seasonal courses of photosynthetic rate,light saturation point and compensation point and chlorophyll contents of seedlings of seven provenances of Lirodendron chinense under different ecological conditions have been measured.Results indicate that the differentiation of the light ecological adaptability has been occurred to ascertain extent among populations of the species.The adaptability and growth potentiality of populations distributed in the western subzone are stronger than those in the castern subzone.Among the populations in the western subzone,provenances of JP and YJ were of stronger than other in adaptability and survival ability.This study supports the concept that the survival ability of the species is gradually getting lower among the populations distributed from west to east, which means that the populations existed in the eastern subzone are often more endangered.This sort of differentiation of ecological adaptability during the process of endangering of a certain species implies the reason that it was to a great extent the “endangering habitat” that made the species to be endangered.
【Fund】: 国家自然科学基金 东北林业大学森林植物生态学实验室基金
【CateGory Index】: S792.210.2
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