根据野外调查和相关资料整理，探讨华南地区入侵植物的种类组成、来源、生长型，比较不同地区间种类组成的相似性，预测部分危险性较大的入侵种的扩散趋势。研究表明：华南三省共有外来入侵植物148种，属于41科105属，其中广东、广西、海南分别为132、129、100种，以菊科（Asteraceae）、禾本科（Gramineae）和苋科（Amaranthaceae）的种类最多。美洲起源的入侵种最多，共有108种，占总种数73．0％。草本型入侵植物种类最多，共有114种，占总物种数77．0％。广东和广西两省入侵植物组成的相似性最大，广西和海南的相似性最低。%According to field investigation and relative data, the species composition, origin and life form were studied, the similarity of different species in different areas was compared, and the spread- ing tendency on part of high dangerous invasive alien plants was predicted. The study showed that 148 species of invasive alien plants belonging to 105 genera of 41 families were identified in three provinces of South China. There were 132 species of invasive alien plants in Guangdong, 129 species in Guangxi and 100 species in Hainan, in which the most were Asteraceae, Gramineae and Amaranthaceae. The most of the invasive alien plants were from America with 108 species, taking up 73.0% of the total species. The species of herbaceous invasive alien plants were the most with 114 species, taking up 77.0 %. The similarity of species composition of invasive alien plants between Guangdong and Guangxi was the highest, the lowest between Guangxi and Hainan.
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