Primary discussion on general rules of biological invasions by comparing the characteristics of invasive plants in China and the USA
会议名称：《全国生物多样性保护及外来有害物种防治交流研讨会》
会议日期：2008年
学科分类：0907[农学-林学] 090705[农学-野生动植物保护与利用] 07[理学] 09[农学] 0713[理学-生态学]
关 键 词：invasive plant invisibility history introduction biological invasion
摘 要：As global changes,biological invasions should be investigated on an intercontinental or global scale.A comparative analysis of invasive plants in China and the USA,the climates of which are similar,revealed many commonalities and differences in their taxonomic characteristics,morphological characteristics,areas of origin, invaded regions,and histories of ***,there were more species from the Asteraceae and Poaceae than from other families,and the rests did not gather in some families among the invasive biotas in the invaded *** one invasive species per family also can become a successful *** invaders had at least one reproductive mode,with sexual reproduction the main mode,and many special flower,fruit,and seed characteristics adapted these species for seed production and *** invasive plants were able to reproduce clonally and these usually had a strong invasive *** of their areas of origin indicated that invasive species mainly derived from other continents with climates similar to that of the invaded area or at latitudes within the same *** deriving from tropical areas became invaders more easily than those from other climatic zones *** the invaded areas,most invasive species inhabited environments disturbed by human activities in preference to other *** study of the invasive histories of species introduced into China and the USA demonstrates that it takes about 100 years for an exotic species to become an invasive *** histories of invasive species cannot be separated from the introductive activities of humans,because both intentional and accidental introductions by humans result in biological *** shortsighted introduction driven by current interests is extremely dangerous.