【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。更多还原

【Abstract】 Merremia boisian,a harmful exotic weed in Guangzhou,has strong asexual reproducibility,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 perennial 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.更多还原