期刊文献+

高寒矮嵩草草甸不同退化演替阶段植物群落地上生物量分析 被引量:52

Study on the aboveground biomass of plant communities among the stages of regressive succession in alpine Kobresia humilis meadow
在线阅读 下载PDF
收藏 分享 导出
摘要 通过对高寒矮嵩草草甸不同退化演替阶段植物群落的研究显示,随着退化程度的加重,群落的组成和优势种等发生了很大的变化,植物群落从以禾本科为主,向以杂类草为主的群落演替.中度和重度退化样地与原生植被样地的禾草类、莎草类以及群落总生物量差异极显著(P<0.01).随退化程度的加深,禾草类、莎草类等优质牧草比例下降,取而代之的是杂类草,其比例明显升高,在群落中占据优势地位. The results of the study on the plant communities among the stages of regressive succession indicated that the dominants and components of the communities changed with the aggravation of degradation, and the plant communities changed from the grass family-dominant community to the forbs-dominant one. The above-ground biomass of grasses, sedges and communities among primary plot, moderate-degraded plot and heavy-(degraded) plot showed significant difference. The proportion of the fine forages such as grasses and sedges decreased with increase in regressive succession, that of the forbs got higher instead, and in the communites the forbs were dominant.
作者 李海英 彭红春 王启基 LI Hai-ying~1, PENG Hong-chun~1, Wang Qi-ji~2 (1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China)
出处 《草业学报》 CSCD 2004年第5期 26-32,共7页 Acta Prataculturae Sinica
基金 中国科学院知识创新工程项目,国家自然科学基金,中国科学院知识创新工程项目
关键词 高寒矮嵩草草甸 植物群落 退化演替 地上生物量 alpine Kobresia humilis meadow plant community regressive succession aboveground biomass
  • 相关文献

参考文献11

二级参考文献48

共引文献182

同被引文献1063

引证文献52

二级引证文献557

论文智能改写系统
维普数据出版直通车
投稿分析
职称考试

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 意见反馈