Living characteristics of rare and endangered species —Davidia involucrata |
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Authors: | Wu Gang Han Shan-heng Wang Hong-chang Luo Yue-chu Deng Hong-bing Zhao Jing-zhu |
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Institution: | (1) Key Laboratory of Systems Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085 Beijing, China |
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Abstract: | Dovetree (Davidia involucrate), one of the first-class protective plants in China, is a relic species of paleotropical kingdom in Tertiary period, belonging
toDavidiaceae with a single genus. In recent years, the increase of regional developing projects has led to a sharp decrease of this ancient
and rare plant in naturally distributed habitats and natural population. In this paper, the biological and ecological characteristics
of Dovetree were described, and the geographically distributed condition of this species in different geologic periods as
well as the major reasons for dynamic changes of its population were systematically analyzed in accordance with field researches
and references. The investigations conducted in different years by setting up standard sample plots showed that the population
number of Dovetree increased yearly in the areas without human interference but decreased yearly in the areas with human interference.
With the increase of population density and human activities decreased as the logarithmic curve:Y=−100.7ln(x)+178.09, and it has turned from a dominant population into an endangered population. Based on the former and present
studies on Dovetree, some protection strategies were put foreword for protecting this ancient and rare species.
Foundation Item: This research was coordinated by the National Natural Science Foundation of China (No. 39970591)
Biography: Wu Gang (1965-), Male, Professor in Key Laboratory of Systems Ecology, Research Center for Eco Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China.
Responsible editor: Chai Ruihai |
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Keywords: | Davidia involucrate Dovetree Geographical Distribution Biological Characteristics Protection Policy |
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