胜红蓟入侵江苏省的风险评估

外来入侵生物严重挑战着全球的经济、社会和生态安全,外来种风险入侵评估工作重要而紧迫.胜红蓟（Ageratum conyzoidesL.）是一种具有极强繁殖和适应能力的恶性外来入侵植物.当前该种已在江苏省偶有发生,并在少数地区建立零星种群.本文根据其生物生态学特性、潜在危险及管理控制的难度等,参考作者已建立的苏州外来植物入侵风险评估体系,采用逐项指标赋分的方法对胜红蓟入侵江苏省的风险进行了定量评估.结果表明,胜红蓟的风险值高达74分（满分100分）,具有高度危险性,因而江苏省应当高度重视胜红蓟的入侵,积极采取有效措施控制其危害蔓延.

Risk Assessment of Ageratum conyzoides in Jiangsu Province

Biological invasions challenge the socioeconomic and ecosystems worldwide. Thus, risk assessments of alien species are extraordinarily important. Ageratum conyzoides is a worldwide invasive weed with powerful abilities to reproduce and adapt to different environmental conditions. Currently, this species has occurred incidentally in Jiangsu Province with several small patches. Because of its biological and ecological traits and the difficulty to control, the authors of this paper assessed the invasive risk of this invasive weed in Jiangsu Province by quantitative assessment method. Seven first-class grade indices and 14 second-class grade indices are used for the assessment with full marks of 100. And the risk score of the invasive species is as high as 74, which suggests a high invasiveness and risk. Therefore, full attention should be paid to the invasion of A. conyzoides in order to avoid its outbreak in Jiangsu Province.