豚草对辽宁省河流湿地原生植被影响调查研究  

Investigation on Effect of Ambrosia artemisiifolia on native vegetation in Liaoning's river Wetlands

作　　者：杨占 

机构地区：[1]辽宁省林业调查规划院,沈阳110122

出　　处：《林业科技通讯》2016年第11期50-52,共3页Forest Science and Technology

摘　　要：豚草(Ambrosia artemisiifolia)是原产于北美的恶性入侵植物,目前在辽宁省已广泛分布,主要分布于河流湿地周边,对原生植被造成了严重影响。本文采用样地调查法对河流湿地的豚草进行了调查分析。结果显示豚草优势群落和本土植物优势群落呈镶嵌分布格局;豚草的入侵对本土植被的植物物种多样性是有明显的不利影响,生物多样性指数平均下降34.3%;豚草对物种均匀度的影响相对较小;在人为干扰较重的区域豚草与原生先锋植物竞争中更有优势。Ambrosia artemisiifolia is an invasive plant originated in North America. and has been widely distributed in Li aoning surrounding the river wetland, it has a serious impact on the native vegetation. This article used sample plot meth od to investigated Ambrosia artemisiifolia surround the river wetland. Results show that dominant community of Am brosia artemisiifolia with dominant community of native vegetation is mosaic distribution forms; the invasion has de creased the biodiversity of native vegetation,the average biological diversity index decreased by 34. 3% it has less influ enee in species evenness;Ambrosia artemisiifolia have more advantage in competition with native pioneer plants.

关 键 词：豚草 AMBROSIA artemisiifolia 河流湿地 植被 生物多样性 

分 类 号：S451[农业科学—植物保护] Q948[生物学—植物学]