期刊文献+

林分密度对人工油松林下植物的影响 预览 被引量:12

Impact of Stand Density on the Vegetation under Artificial Pinus tabulaeformis
在线阅读 下载PDF
收藏 分享 导出
摘要 分析了黄土丘陵区宜川县铁龙湾林场3种林分密度人工油松林对林下的植物组成、植物优势种、物种多样性和植物生物量的影响。结果表明:林下双子叶植物科的数目随林分密度的增加而减少,单子叶植物在中密度林分下最少,在小、大密度林分下数量基本一致。在小、中、大密度林分下的优势种分别是豆科和蔷薇科、菊科、忍冬科。灌木层和草本层物种多样性各指数随林分密度增大而减小,只有草本Simpson指数(D)和Shannon-Wiener指数(H′)在中密度和大密度林分下比较接近。林下的灌木层和草本层的总生物量随林分密度的增加而减少。不同林分密度下灌木层各器官的生物量的分配呈现出不同,草本层的地下生物量均大于地上生物量,但地下生物量均随林分密度的增加呈现为减少的趋势。 The present research studied the influence of stand density on vegetation composition,dominant species,species diversity and vegetation biomass of undergrowth of artificial Pinus tabulaeformis stands in the Loess Hilly Region,located in Tielongwan,Yichuan County,China.The results showed that the number of understory dicotyledonous plant families decreased with the increase of stand density.The number of monocot plants was the least in the medium density stand,while in the stands with high and low densities,the number of monocot plants was the same.The dominant species in low,medium and high density stands were Leguminosae and Rosaceae,Asteraceae,and Caprifoliaceae,respectivley.Shrub layer and herb layer species diversity indices decreased with the increase of stand density,only herbal Simpson index(D) and Shannon-Wiener(H ') index had the similar values in the medium and high density stands.The total biomass of shrub and herb layers decreased with the increase of stand density.However,different biomass allocation ratios were found in different organs of the shrubs.For herb layer,the underground biomass was greater than that of the aboveground,and the underground biomass decreased with the increase of stand density.
作者 侯磊 张硕新 陈云明 曹扬 王娟 HOU Lei,ZHANG Shuo-xin,CHEN Yun-ming,CAO Yang,WANG Juan(1.College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China; 2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China)
出处 《西北林学院学报》 CSCD 北大核心 2013年第3期46-52,共7页 Journal of Northwest Forestry University
基金 中国科学院战略性先导科技专项(XDA05050203-05-03)
关键词 人工油松林 林分密度 物种多样性 生物量 artificial Pinus tabulaeformis stand density diversity biomass
作者简介 侯磊,男,在读硕士,研究方向:森林生态。E—mail:houmokuang@sina.com 通信作者:张硕新,男,教授,博导,研究方向:森林生态、植物生理生态和景观生态。E—mail:sxzhang@nwsuaf.edu.cn
  • 相关文献

参考文献31

二级参考文献262

共引文献1880

同被引文献274

引证文献12

二级引证文献34

投稿分析

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