检疫性杂草薇甘菊在中国的适生性与分布

The Potential Distribution of Quarantine Mikania micrantha in China

根据薇甘菊的生物学特性,筛选影响薇甘菊的平均最高气温、平均气温、平均最低气温、降雨量、降雨日数及平均日照等6个气候风险因子。应用欧式距离的数学模型,评判薇甘菊适生区深圳与中国其他17个气候大区相应地点的30 a(1971～2000年)气候相似程度。应用农业气候相似等级标准法,对薇甘菊在我国的适生情况进行划分。结果表明:薇甘菊的适生区为:暖温带湿润大区、中亚热带湿润大区、南亚热带湿润大区、南亚热带亚湿润大区、边缘热带湿润大区、边缘热带亚湿润大区、高原亚温带湿润大区、高原亚温带亚湿润大区、北亚热带季风气候大区;次适生区为:暖温带亚湿润大区;非适生区为:寒温带湿润大区、中温带湿润大区、中温带亚湿润大区、中温带亚干旱大区、中温带干旱大区、暖温带极干旱大区、高原亚温带亚干旱大区。

The potential distribution area of the quarantine weed Mikania micrantha in China was assessed based on the biological characteristics of Mikania micrantha, using the homoclime approach. And 6 climate factors （the average maximum temperature, average temperate, average days and annual average sunshine time） were selected as minimum temperature, annual precipitation, precipitation the variables. Euclidean distance was used to evaluate the similarity of climate factors for 30 years （1971-2000） between Shenzhen, where is the distribution area of Mikania micrantha, and other 17 climate districts in China. The suitable distribution, less suitable distribution and unfit distribution of Mikania micrantha in China were concluded by agricultural climatic similarity and discriminant method. And the potential distribution map of Mikania micrantha in China was provided. The present study provided theoretical basis for the prevention and control of Mikania micrantha.