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当前位置: 首页 > 文章 > 不同生境紫茎泽兰构件生长及其对环境的行为响应 安徽农业科学 2016 (12) 20-24
Position: Home > Articles > The Modular Growth of Eupatorium adenophorum in Different Habitats and Behavioral Responses to Environment Journal of Anhui Agricultural Sciences 2016 (12) 20-24

不同生境紫茎泽兰构件生长及其对环境的行为响应

作  者：
刘钊;李伟;周伟
单  位：
西南林业大学林学院;河西学院农业与生物技术学院
关键词：
生境;紫茎泽兰;构件生长;环境因子;哀牢山国家级自然保护区
摘  要：
[目的]探究紫茎泽兰(Eupatorium adenophorum)构件生长对不同环境条件变化的响应。[方法]在哀牢山国家级自然保护区南华片区紫茎泽兰入侵的华山松(Pinus armandii)林、落叶阔叶林、林区公路边和林区空旷地等4种生境类型中共设置样方120个,测量紫茎泽兰优势植株构件数据和环境因子分析不同生境紫茎泽兰的生长状况差异性和环境因子差异性,并采用主成分分析和相关性分析研究紫茎泽兰构件生长变量主成分因子和环境变量主成分因子的关系。[结果]不同生境紫茎泽兰优势植株构件生长均差异显著(P<0.01)。在华山松林中,紫茎泽兰植株相对弱小,各枝级数分配不均,这与华山松林内的弱光照条件、高海拔的气候特征及较大的草本层盖度密切相关。林区空旷地和林区公路边的植株各枝级的分枝密度和分枝强度均较其他2种生境的大,且各枝级数分配较均匀,这与生境的强光照条件有关。落叶阔叶林中的紫茎泽兰植株粗壮茂盛,但各枝级数分配不匀,这与该生境较高的土壤肥力和夏季林内光照不足有关。[结论]环境变化是影响紫茎泽兰构件生长的关键,紫茎泽兰构件生长对环境条件变化有不同的响应。建议对保护区不同生境采取不同的管理方式,以防止紫茎泽兰的入侵或降低其入侵的危害。
译  名：
The Modular Growth of Eupatorium adenophorum in Different Habitats and Behavioral Responses to Environment
作  者：
LIU Zhao;LI Wei;ZHOU Wei;College of Agriculture and Biotechnology,Hexi University;Department of Forestry,Southwest Forestry University;
关键词：
Habitat;;Eupatorium adenophorum;;Modular growth;;Environmental factor;;Ailaoshan National Nature Reserve
摘  要：
[Objective] The aim was to explore the response of module growth of Eupatorium adenophorum to changed environments.[Method] One hundred and twenty plots were established respectively in Pinus armandii forest,deciduous broad-leaved forest,roadsides and open ground in forest areas where Eupatorium adenophorum were invaded in Nanhua part of Ailaoshan National Nature Reserve.And data of advantage plants modular of Eupatorium adenophorum and environment factors were measured.The growth status and environmental factors of Eupatorium adenophorum in different habitats were analyzed.Principal component analysis and correlation analysis were adopted to study the relationship between principal component factors of modular growth variables and environmental variables.[Result] The results indicated that there were significant differences(P < 0.01) in modular growth of Eupatorium adenophorum advantage plants among different habitats.In Pinus armandii forest,the plants of Eupatorium adenophorum were weaker than other habitats and the allocation in branch class level was unequal,which were closely related to the weak sunlight condition,climatic characters of high elevation and the higher herb coverage.In open ground and roadsides in forest areas,the branching density and intensity of each level branch were higher than other two habitats and the allocation in branch class level were equal,which were related to strong sunlight.In deciduous broad-leaved forests,plants of Eupatorium adenophorum were strong and exuberant and the allocation in branch class level was unequal,which were related to the fertile soil and the weak sunlight condition under canopy in summer.[Conclusion] Environmental change is the key influencing modular growth of Eupatorium adenophorum and modular growth of Eupatorium adenophorum responses different sensitivity to environmental changes.We hereby suggest that the different habitats in the nature reserve should be managed by different manners in order to prevent the invasion of Eupatorium adenophorum and /or decrease its harm when it is invaded.

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