许昌市城郊外来入侵植物调查及危害风险评价

对许昌市城郊的外来入侵植物统计分析结果表明:外来入侵植物共有46种,隶属18科;其来源地有南北美洲、欧洲、西亚等地区;入侵途径主要包括人为有意引入、人类活动无意引入和自然侵入;成灾机制则主要受植物本身的生物学特性和适宜的地理环境以及人类活动的影响.据作者建立的许昌市城郊外来入侵植物危害风险评价指标分析:在46种外来入侵植物中,其中有21种属于高风险危害植物,10种属于中风险危害植物.

Research and Risk Assessment of Alien Invasive Plants of Xuchang Suburb

The analyses of the invasive plants of Xuchang suburbs show that there are 46 species of invasive plants and they belong to 18 families.They come from North America,South America,Europe and Western Asian in the original.The ways of the invasion include intended introduction of human,non-intended introduction of human activities and nature invasion.The disaster mechanism is mainly affected by the biological characteristics of the plants,appropriate geographical environment and human activities.According to the author's risk assessment system of Xuchang suburbs,21 kinds of alien invasive plants are high risk harm plants and 10 kinds are moderate risk harm plants among 46 alien invasive plants.