重庆市北碚区入侵植物现状及防治对策研究

On Invasive Plants in Beibei District of Chongqing and Its Preventive Strategies

在野外调查、标本采集鉴定的基础上,结合文献资料,初步分析了重庆市北碚区外来入侵植物的种类组成、分布状况、原产地、危害程度,并且提出防治对策与建议.结果表明:北碚区有45种入侵植物,隶属于20科,其中菊科种类最多,有11种;原产地为美洲的种类最多,有29种;草本最多,有37种;空心莲子草Alternanthera philoxeroides、小白酒草Conyza canadensis和落葵薯Anredera cordifolia危害程度最为严重;其中歇马镇有入侵植物种数33种,危害程度最为严重.

On the basis of the filed investigation and literature review,the species,original places and damage grades of invasive alien plants in Beibei District of Chongqing have generally been studied,and some suggestions to control these alien invasive plants have also been given in this paper.The results show that there are 45 species of invasive plants which belonged to 20 families.The most abundant family is Composite involving 11species;there are 37 species of herbs;29species from America;Alternanthera philoxeroides,Conyza canadnsis and Anredera cordifoliais most serious harm;Xiema damage degree is most serious,there are 33 kinds of invasive plant species.