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作 者 ：陈思;丁建清

期 刊 ：植物科学学报 2011年 29卷 6期 页码：675-682

关键词：杂草评估系统；气候匹配模型；耐寒性；再力花；

Keywords:Weed risk assessment system, Climate match model, Cold tolerance, Thalia dealbata,

摘 要 ：通过修改过的澳大利亚杂草评估系统(Australia Weed Risk Assessment System),气候匹配模型(Max-Ent)以及越冬实验对外来湿地植物再力花(Thalia dealbata)的适生性进行了分析。澳大利亚评估系统的评分为18分,远超过系统本身阈值(6分)。MaxEnt分布区预测结果表明,再力花可以在北京—郑州—西安—成都—丽江一线以东生长,江浙一带以及安徽省东南部尤其适合再力花的生长。冷冻实验表明,经过2个月0℃低温处理的再力花虽然在生物量及开花数量上与低温处理时间较短的植株存在显著差异,但是却依然可以完成整个生活史。结果表明,再力花在中国大部分区域都可以生长,可能具有入侵风险。

Abstract:This study examined the spread potential of alien wetland plant species Thalia dealbata in China using an adapted Australia Weed Risk Assessment System,climate match model(MaxEnt)and frozen experiment in winter.Thalia dealbata achieved a score of 18 by the adapted Australian Weed Risk Assessment System,far beyond the cutoff value given by the system(6).According to the results given by MaxEnt,Thalia dealbata was able to grow on the east side of the line formed by Beijing,Zhengzhou,Xi ’ an,Chengdu and Lijiang.Jiangsu Pro-vince,Zhejiang Province and Southeastern part of Anhui Pro-vince were especially suitable for the growth of Thalia dealbata.According to the results of the frozen experiment,the plants that stayed in cold storage of 0℃ for two months were still able to accomplish their life cycle,although their biomass and flower number were significantly lower than those that stayed in cold storage for a shorter period of time.In conclusion,our results suggest that Thalia dealbata had invasive potential and was able to grow in most areas in China.

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