金钟藤入侵危害的群落学特征初探  

The community characteristics for invading damage of the forest killer-Merremia boisiana

作　　者：练琚蕍[1] 曹洪麟[1] 王志高[1] 李静[1] 叶万辉[1] 粟娟 

机构地区：[1]中国科学院华南植物园,广州510650 [2]广州市林业局,广州510030

出　　处：《广西植物》2007年第3期482-486,492,共6页Guihaia

基　　金：广州市林业局林业科技计划项目(LYJ0506);广东省自然科学基金重点项目(05200701)~~

摘　　要：对入侵广州市东北郊龙眼洞林场的金钟藤生长状况及其对三种不同森林群落的危害进行研究。结果表明,这种多年生木质藤本植物的无性繁殖能力极强,带根茎比例高,生存策略明确,目前未发现其天敌。金钟藤通过极强的攀附能力,盖幕危害附主植物,且对群落的入侵并无选择性,对群落中所有的乔木都具有危害性,尤其是对物种多样性指数较低的马占相思林危害相对最为严重。它可能还可以通过改变所在森林生态系统的氮循环,间接影响群落中其他植物的生长。Merremia boisian, a harmful exotic weed in Guangzhou, has strong asexual reprodu .ibility, high percentage of rhizome, clear growth strategy and no natural enemy. Ninety square meters in Longdong forestry centre were investigated in December 2004,and aboveground biomass of twelve square meters plots was harvested. This large pe- rennial liana commonly grows together with other vines such as Embelia ribe and Mussaenda pubescens. It can climb to tall tree crown and cause damage by forming a cover on the canopy, especially to Acacia mangium. This invasion may alter nitrogen cycling,and the consequences for community structure are poorly demonstrated.

关 键 词：金钟藤 外来种 盖幕作用 氮循环 

分 类 号：Q948.15[生物学—植物学]