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《Acta Botanica Yunnanica》 2009-01
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Potential Distributions of Solidago canadensis(Asteraceae) in China as Predicted by GARP

YU Yan,CHEN Li-Li,HE Xing-Jin(1 College of Life Sciences,Sichuan University,Chengdu 610064,China)  
Solidago canadensis L.is a perennial plant of the family Asteraceae,native to North American.It is one of the most harmful alien species in mainland China.This research applied Genetic Algorithm for Rule-set Production(GARP) ecological niche modeling to predict the species' potential range in China on the basis of occurrence points.The results indicated that: Environmental factors such as Slope,aspect,annual precipitation,wet days,flow accumulation,flow direction,maximum temperature and frost days greatly influenced the size of S.canadensis's potential range,while parameters such as minimum temperature and mean annual temperature had little impact.Areas that we predict to have potential for invasion were still larger than those areas that had been invaded.Therefore,S.canadensis is predicted to continue to expand in China.Northeast and south-central China was most liable to be invaded;hence urgent measures should be taken there to prevent this species from further spreading.
【Key Words】: GARP model Invasive alien plant Distributional area Solidago canadensis Predict
【Fund】: 国家自然科学基金支持项目(30670146);; 国家科技基础条件平台项目(2005DKA21403)
【CateGory Index】: S451
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