紫茎泽兰群落数量特征调查.pdfVIP

20 10, 38( 8) : 123~ 126 Guizhou Agri ultural S ien es [ ] 100 1360 1( 20 10) 0805 紫茎泽兰群落数量特征调查 1 1, 2* 1 2 赵明坤 , 张锦华 , 左相兵, 杨颖慧 ( 1. , 558200; 2. , 610041) [ ] 通过对西南部分地区紫茎泽兰入侵的群落学调查, 研究了紫茎泽兰入侵的群落主要数量特征 的变 规律结果表明: 紫茎泽兰入侵的群落其物种比较贫乏, 最多的物种数量为17 种; 群落内紫茎泽兰主 要数量特征随着物种数量的增加总体表现为下降的趋势, 物种数目多的群落内, 紫茎泽兰种群的优势度小, 相对高度和盖度也比较低; 优势度指标与群落多样性指数相关性最强, 能反映出该入侵种对群落多样性均 匀性的影响 [ ] 生物入侵; 紫茎泽兰; 群落特征 [ ] S45 [ ] A Community Quantity Characteristics of Ageratina adenophora 1 1, 2* 1 2 ZHAO M ingkun , ZHAN G Jinhua , ZU O Xiangbing , YANG Yinghui ( 1. GuizhouPratacultural Institute, D ushan, Guizhou 558200; 2. Pratacultural Dep artment, Sichuan Agricultural University , Ya! an, Sichuan 610041, China Abstract: T he oenology of invasive A g er at ina adenop hor a w as investigated in some southw est regions to study the hange regulation of main quantity har a teristi s. T he results show ed that the spe ies of the ommunity invaded by A g er at ina adenop hor a w as poor and the highest spe ies quantity of the ommunity invaded by A g er ati na adenop hor a w as 17, the main quantity hara teristi s of A g erati na ade nop hora in the ommunity show ed a de line trend w ith spe ies in rease in the ommunity, the superiority, relative height and overdegree of A g e rati na adenop hor a population w as low er in the ommunity w ith more other spe ies, and the orrelation betw een superiority index and diversity ould refle t the effe t of A g er at ina ade nop hor a on diver sity and uniformity of the ommunity. Key words: biologi al invasion; A g e rati na adenop hor a; ommunity hara teristi s , , , , , 1 , , ,