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题名: Allelopathic effects of Eucalyptus on native and introduced tree species
作者: Chu, Chaojun1; Mortimer, P. E.2, 3; Wang, Hecong1; Wang, Yongfan1; Liu, Xubing1; Yu, Shixiao1
刊名: FOREST ECOLOGY AND MANAGEMENT
关键词: Allelopathy ; Volatilization ; Decomposition ; Eucalyptus urophylla ; Pinus elliotti ; Broad-leaved tree species
英文摘要: Allelopathy is widely considered to be one of the causes of biodiversity reduction in Eucalyptus plantations. However, most research conducted on the allelopathic effects of Eucalyptus is performed in the laboratory with weeds and crops as receptors, which fail to fully reflect natural ecosystems. In this study, we conducted two field trials and a greenhouse trial to assess the influence of soil allelopathy, allelochemical volatilization, and foliage litter decomposition on seed germination and seedling growth of three native (Acmena acuminatissima, Cryptocaiya concinna and Pterospermum lanceaefolium) and one introduced (Albizia lebbeck) tree species in a Eucalyptus urophylla and Pinus elliottii plantation. In order to avoid confounding factors relating to management strategies and environmental influences, only one plantation of each species was used for experimentation. In the allelopathy experiment, the root length of the three native species was significantly inhibited in the E. urophylla plantation compared with that in the P. elliottii plantation. In the volatilization experiments, the seedling survival rate of the three native species was greater in the E. urophylla plantation, but significant differences were found for A. acuminatissima and C.concinna. Root length and dry weight of P. lanceaefolium increased significantly in the E. urophylla plantation, in the foliage litter decomposition experiments. There was no significant difference between the two plantations for A. lebbeck, except that the seedling survival rate was greater in the E. urophylla plantation in the foliage litter decomposition experiment. We concluded that allelopathy in the E. urophylla plantation was selective, which inhibited the growth of the native tree species but had no significant influence on the introduced A. lebbeck species. Allelopathy from volatilization and foliage litter decomposition contributed little to the inhibitory effects. We suggest that the introduced nitrogen-fixing species, A. lebbeck could be a potential choice for the establishment of mixed stands with Eucalyptus. (C) 2014 Elsevier B.V. All rights reserved.
出版日期: 2014-07-01
卷号: 323, 页码:79-84
语种: 英语
收录类别: SCI
学科分类: Forestry
ISSN号: 0378-1127
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18210
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Sun Yat Sen Univ, Key Lab Biodivers Dynam & Conservat Guandong High, State Key Lab Biocontrol, Dept Ecol,Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China
2.World Agroforestry Ctr, East & Cent Asia Off, Kunming 650201, Yunnan, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Biodivers & Biogeog East Asia KLPB, Kunming 650201, Yunnan, Peoples R China

Recommended Citation:
Chu,Chaojun;Mortimer,P.E.;Wang,Hecong;Wang,Yongfan;Liu,Xubing;Yu,Shixiao.Allelopathic effects of Eucalyptus on native and introduced tree species,FOREST ECOLOGY AND MANAGEMENT,2014,323():79-84
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