河南外来入侵植物区系成分与成灾机制

采取野外样方调查和资料分析方法,对河南外来入侵植物区系地理成分及其成灾机制进行研究,结果表明,河南目前已知的外来入侵植物有53种,隶属于19科41属;属的区系地理成分划分为9种分布区类型和4种变型;种的区系地理成分划分出8个类型;热带分布成分(53.57%)比温带分布成分(46.43%)稍强,体现了河南植物区系环境过渡性的特点;这些外来入侵植物大部分原产美洲和欧洲.据此,发现河南外来入侵植物的成灾机制与其区系地理成分之间的密切联系,要采用积极有效的方法对那些已经产生危害的种类进行控制.

Studies on Flora Alien Invasive Plants and Disastrous Mechanisms in Henan

According to the outside invading plant's final research of Henan indicates: There are 53 species of flora alien invasive plants has already known at present,they are belonged to 41 genera and 19 families in Henan.The areal-types of the genera and the species are abundant.Based on their geographical distribution,41 genera are classified into 9 areal-types,most of them belong to the temperate distribution pattern plant(46.43 %),many of them belong to tropical one(53.57 %);That the 53 species distributed in Henan can be divided into 8 areal types.Have embodied Henan flora environment transition nature characteristic,Most of them are produced in America and Europe.Accordingly,The outside causing disaster invading plant's mechanism in Henan has shown the close connection being a geographical feature component with area,has drawn attention in responding to in area vegetation process besides introducing a fine variety.