生态环境学报Issue(11)：1790-1794,5.
不同林木种群对紫茎泽兰营养生长和生殖生长的影响
Vegetative and reproductive growth of Eupatorium adenophorum Spreng in different forest communities
摘要
Abstract
Eupatorium adenophorum Spreng is one of the worst invasive alien plants into China. It brings great harm to the ecological environment in the Southwest of China. Occurrence and growth of E. adenophorum in different forest communities were evaluated in order to provide integrate strategies on ecology control of E. adenophorum. The growth characteristics of E. adenophorum in vegetative and reproductive periods under different manmade forest communities were investigated in the year 2009, 2011 and 2012. The results indicated that light intensity of E. adenophorum in broadleaved forest, broadleaved-needle mixed forest and broadleaved mixed forest were significantly lower than needle-leaved forest and bare land, and light intensity was decreased by 90%compared to bare land. Density of E. adenophorum in bare land was 111~218 plants·m-2 and the quantity E. adenophorum in needle-leaved forest was inhibited compared to bare land and the inhibition rate ranged from 46.2%~77.1%. The inhibitory effect was also observed in broadleaved forest, broadleaved-needle mixed forest and broadleaved mixed forest and the inhibition rate reached above 90%during the last three years. Plant height and branches in needle-leaved forest were significantly higher than two kinds of mixed forests and broadleaved forest, but lower than bare land. Moreover, the quantity of buds and seeds of E. adenophorum under different manmade forests was also inhibited compared to bare land. Seed quantity in bare land ranged from 8 314~15 410 per plant, which was 1 330~4 666.3 in needle-leaved forest. Few buds were observed in broadleaved, broadleaved-needle mixed and broadleaved mixed forest. A positive correlation was observed between light intensity and density, plant height, branches, buds and seeds of E. adenophorum. Light could be an important factor affecting the growth and distribution of E. adenophorum. Ecological control of E. adenophorum by mixed plantation of broadleaved forest not only provides good efficacy, but also brings direct economic benefits to farmers.关键词
紫茎泽兰/光照强度/营养生长/生殖生长/混交林Key words
Eupatorium adenophorum Spreng/light intensity/vegetative growth/reproductive growth/mixed forest plantation分类
农业科技引用本文复制引用
朱文达,曹坳程,颜冬冬,李林,刘晓燕,郭章碧..不同林木种群对紫茎泽兰营养生长和生殖生长的影响[J].生态环境学报,2013,(11):1790-1794,5.基金项目
农业部公益性行业（农业）科研专项 （）
