加拿大一枝黄花在中国的潜在入侵区预测

摘要

The potential distribution of the invasive perennial Solidago canadensis in China was assessed by using the homoclime approach. This alien weed spreads rapidly in China, invading abandoned fields and disturbed habitats. It is currently abundant in four provinces of southeastern China, with scattered populations in other provinces to the West and North. We used a climatic profile from the native American range and matched it with data from climatic stations throughout China. To map the potential distribution in China, data were extrapolated to form a grid of 0.1 degree latitude by 0.1 degree longitude. Grid points that fall within the climatic profile are assumed to circumscribe the potential distribution. The potential range in China is remarkably larger than the current range, with parts of northeastern China appearing suitable for S. canadensis growth. The latitudes of the potential range span from 25° to 50°. The results show the considerable potential for future spread of S. canadensis in China, implying that control measures should be taken to contain this invasive species.%加拿大一枝黄花Solidago canadensis是原产于北美的菊科Asteraceae多年生草本植物, 上世纪30年代引入我国, 现广泛分布于我国东部地区的部分省市, 并已成为该区域的农业和环境杂草.为了预测加拿大一枝黄花在我国的潜在分布区, 本研究采用相同气候方法对其进行了估测.我们用加拿大一枝黄花的原产地--美国的气候参数作为参照, 将其与我国各地气象站的气候数据进行匹配.结果表明, 加拿大一枝黄花在我国的潜在分布区的纬度跨度为25°-50°, 所以其潜在的入侵区将远大于目前的实际分布区, 甚至东北的部分地区也将适宜于该物种的生长.据此, 我们建议相关管理部门应加强该物种的监测工作, 以防其进一步向目前入侵区以外的周边地区蔓延.