| 喀斯特地区长期草地利用制度对群落稳定性的影响 |
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| 引用本文： | 李莉,王元素,洪绂曾,孔玲. 喀斯特地区长期草地利用制度对群落稳定性的影响[J]. 生态环境, 2011, 0(Z2) |
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| 作者姓名： | 李莉 王元素 洪绂曾 孔玲 |
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| 作者单位： | 贵州师范大学生命科学学院;贵州省草原监理站;中国农业大学动物科技学院草地所;贵州省威宁金钟农技中心; |
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| 基金项目： | 国家“九五”重大科技攻关项目(96-016-02-01); 贵州师范大学博士启动基金; 贵州省重大科技攻关专项“贵州草地生态畜牧业关键技术研究及集成示范”(黔科合重大专项字[2011]6009号) |
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| 摘 要： | 草地利用方式和混播组合对群落特性的长期影响不同。利用方式对白三叶(Trifolium repens)盖度没有显著影响,而混播组合与利用方式的交互作用影响显著。白三叶在宿营处理和刈割为主利用下的与鸭茅(Dactylis glomerata)混播中的比例最低,而在刈割利用和宿营处理的多年生黑麦草(Lolium perenne)组合中的盖度最高。混播组合对禾本科组分盖度影响不显著,但利用方式和交互作用有显著的作用,长期放牧绵羊的混播草地多年生黑麦草很少。混播组合对杂草密度、盖度和多样性指数的影响不明显,而利用方式和交互作用显著地影响杂草盖度和多样性指数。放牧草地中的杂草密度高于刈割草地的,其中放牧利用的白三叶/多年生黑麦草草地最高。放牧牛的草地杂草密度较少,而放牧绵羊的草地杂草较多。白三叶、禾本科牧草以及杂草的密度都显著地受混播组合、利用方式及其交互作用的影响,说明密度是一个敏感的指标。
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| 关 键 词： | 喀斯特草地 放牧 刈割 群落稳定性 |
Effects of long-term utilizing systems on community stability of Karst pasture |
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| LI Li,WANG Yuansu,,HONG Fuzeng,KONG Ling .College of Life Science,Guizhou Normal University,Guiyang ,China,.Guizhou Provincal Grassl, Monitoring Station. Effects of long-term utilizing systems on community stability of Karst pasture[J]. Ecology and Environmnet, 2011, 0(Z2) |
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| Authors: | LI Li WANG Yuansu HONG Fuzeng KONG Ling .College of Life Science Guizhou Normal University Guiyang China .Guizhou Provincal Grassl Monitoring Station |
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| Affiliation: | LI Li1,WANG Yuansu2,3,HONG Fuzeng3,KONG Ling 1.College of Life Science,Guizhou Normal University,Guiyang 550001,China,2.Guizhou Provincal Grassland Monitoring Station,3.Institute of Grassland Science,College of Animal Science,China Agricultural University,Beijing 100094,4.Jinzhong Agricultural Technique Service Station,Weining,Guizhou 553102 |
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| Abstract: | Long-term utilizing system and composition have different effects on serious community traits of pasture.Utilizing ways have no significant effects on white clover coverage,which were significantly affected by composition and the interaction.White clover was much lower in the mixtures that with cocksfoot than with perennial ryegrass,when under cutting and sheep-panning treat.Grass coverage,the other way round,significantly affected by utilizing ways and the interaction,e.g.,perennial ryegrass is very low un... |
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| Keywords: | karst pasture grazing cutting community stability |
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