广西科学Issue(5)：463-468,483,7.
连栽对桉树人工林植被盖度、物种多样性及功能群的影响
Effect of Successive Rotations on Vegetation Cover,Spe-cies Diversity and Functional Groups in Eucalypt Plan-tations of South China
摘要
Abstract
[Objective]This paper aimed to evaluate the effects of multi-successive rotations on vegetation cover,species diversity and functional groups in eucalypt plantation.[Methods]By the methods of time-space series analysis and field monitoring,the vegetation cover,species di-versity and functional groups were studied from first to third successive rotations in eucalypt plantation.[Results]The successive rotations of eucalypt plantation revealed not only to reduce species diversity but also to change the composi-tion of plant functional groups.The successive short-rotation of eucalypt plantation decreased propagule availability of tall tree and vine spe-cies,but increased grasss.The relationship be-tween vegetation cover and plant species diversi-ty was different among different successive rota-tions of eucalypt plantations.The species richness was significant positive for canopy cover and shrub layer cover of understory vegetation in first rotation stands (P<0.05,n=18),but was significant negative in second rotation stands and third rotation stands of eucalypt plantations ( P<0.05,n=18).The successive rotation reduced to the understory vegetation cover strong-ly,but showed a little influence on the canopy cover.[Conclusion]The successive rotation in eu-calypt plantation had significant negative effects on plant species diversity.The plant functional group trended obviously to the grass,small-sized and annual plants over successive rotations.关键词
植物多样性/植物功能群/连栽/桉树Key words
plant species diversity/functional type/successive rotation/eucalypt分类
生物科学引用本文复制引用
温远光,左花,朱宏光,刘世荣,梁宏温,黄雪蔓,李晓琼,罗应华..连栽对桉树人工林植被盖度、物种多样性及功能群的影响[J].广西科学,2014,(5):463-468,483,7.基金项目
国家自然科学基金项目(31460121),国家科技支撑计划项目(2012BAD22B01),广西重大专项计划项目(1222005)和广西教育厅重大项目资助。 （31460121）
