期刊文献+

长苞铁杉林林隙主要树种生态位初步研究 被引量:9

Ecological Niche in Dominant Species in Tsuga longibracteata Forest Gaps with Different Development Stages
下载PDF
导出
摘要 以林隙前、中、后期3个发育阶段的各个林隙为一维资源位状态,利用Shannon-wiener指数、Levins指数及生态位重叠公式,计算林隙不同发育阶段主要树种生态位特征。结果表明,前期生态位宽度从大到小的顺序为:长苞铁杉、米槠、木荷、甜槠、深山含笑、香桂、青冈、猴头杜鹃、山矾、细叶青冈;中期的为:米槠、木荷、长苞铁杉、香桂、深山含笑、山矾、甜槠、猴头杜鹃、青冈、细叶青冈;后期的为:米槠、木荷、长苞铁杉、青冈、山矾、香桂、深山含笑、细叶青冈、甜槠、猴头杜鹃;林隙发育的不同时期主要树种生态位重叠值均较大,但随着林隙的不断发育,主要树种间生态位重叠值有减小的趋势;长苞铁杉在林隙发育的不同阶段与生态位宽度较大的物种有较小的生态位重叠值,而与生态位宽度较小的物种有较大的生态位重叠值。 Shannon-wiener index, Levins index and comparability proportion formula were used to study niche breadth and niche overlap of dominant species in Tsuga longibracteata forest gaps at different stages. Tsuga longibrocteata, an endemic to China species of Pinaceae, is distributed at the uppermost layer of forest, which makes it difficult to regenerate naturally. The study of ecological niche in gaps of T. longibracteata forest is to understand the change in population number of some species, the regeneration of which depends on gaps, and to protect the forest resource more effectively. The sites studied were located in Tianbaoyan National Nature Reserve in Fujian Province. Twenty one gaps, with quadrats of 80 m^2 each were investigated, The results revealed that niche breadth of main trees in gaps varied at different stages of gap development. At early stage, niche breadth of tree species declined in the following order: Tsuga longibracteata, Castanopsis carlesii, Schima superba, Castanopsis eyrei, Michelia maudiae, Cinnamomum subavenium, Cyclobalanopsis glauca, Rhododendron iniarum, Symplocos sumuntia, Cyclobalanopsis myrsinaefolia; at the middle stage, in the descending order of: Castanopsis carlesii, Schima superba, Tsuga longibrctcteata, Cinnamomum subavenium, Michelia maudioe, Symplocos sumuntia, Castanopsis eyrei, Rhododendron iniarum, Cyclobalanopsis glauca, Cyclobalanopsis myrsinaefolia; while at the late stage, Castanopsis carlesii, Schima superba, Tsuga longibracteata, Cyclobalanopsis glauca, Cyclobalanopsis myrsinae, Cinnamomum subavenium, Michelia maudiae, Cyclobalanopsis myrsinaefolia, Castanopsis eyrei,Rhododendron iniarum. High values of niche overlap were shown in all trees in gaps with different stages, but then the values declined with the gap development. Less niche overlap values were shown in T. longibraeteata compared to those species with higher niche breadth, but more to those with lower niche breadth.
出处 《热带亚热带植物学报》 CAS CSCD 北大核心 2006年第1期69-74,共6页 Journal of Tropical and Subtropical Botany
基金 福建省自然科学基金项目(B0510024) 福建省科技厅重大项目(2001F007 2001Z025)资助
关键词 林隙 林隙发育阶段 长苞铁杉林 生态位宽度 生态位重叠 Gap Gap development stage Tsuga longibraeteata forest Niche breadth Niche overlap
  • 相关文献

参考文献9

二级参考文献122

共引文献630

同被引文献137

引证文献9

二级引证文献33

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部