| 藏北高寒植被群落物种多样性与土壤环境因子的关系 |
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| 引用本文： | 赵景学,曲广鹏,多吉顿珠,尚占环.藏北高寒植被群落物种多样性与土壤环境因子的关系[J].干旱区资源与环境,2011(6):105-108. |
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| 作者姓名： | 赵景学 曲广鹏 多吉顿珠 尚占环 |
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| 作者单位： | 兰州大学草地农业科技学院;西藏自治区农牧科学院畜牧兽医研究所 |
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| 基金项目： | 国家科技支撑项目(2007BAD63B03)资助 |
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| 摘 要： | 用样带法研究了藏北高寒植被群落物种多样件及其与土壤环境因子之间的关系,对3类高寒植被多样性指数和7个土壤指标进行相关性分析和回归分析.结果表明:从高寒草原到高寒荒漠植被,群落组成逐渐趋于简单化;土壤环境因子影响多样件指数,高寒植被土壤有机质、全氮、有效氮、全磷和多样性指数及丰富度指数有极显著(P＜0.01)正关系;均匀...
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| 关 键 词： | 藏北 高寒植被 物种多样性 土壤环境 |
Relationship between species diversity and soil factors of alpine grasslands in north Tibet |
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| ZHAO Jingxue,QU Guangpeng,DUO JI,Dunzhu,SHANG Zhanhuan.Relationship between species diversity and soil factors of alpine grasslands in north Tibet[J].Journal of Arid Land Resources and Environment,2011(6):105-108. |
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| Authors: | ZHAO Jingxue QU Guangpeng DUO JI Dunzhu SHANG Zhanhuan |
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| Institution: | 1(1.College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,P.R.China;2.Institute of Livestock Research,Tibet Academy of Agriculture and Animal Husbandry Sciences,Lhasa 850009,P.R.China) |
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| Abstract: | Relationships between species diversity and the soil factors of alpine grassland in north Tibet were studied.Correlation and regression analysis were used to study the relationships between 3 diversity indexes and 7 soil factors.Results indicated that community composition gradually tends to simplify from alpine grassland to alpine desert.Soil organic matter,total nitrogen,available nitrogen and total phosphorus were positive correlative to species diversity and richness significantly(p<0.01);Relationships between evenness index and all of the soil factors were not reach significant level.Stepwise regression analysis showed that soil organic matter and total nitrogen had great impact on species diversity. |
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| Keywords: | north Tibet alpine vegetation species diversity soil factor |
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