张国胜, 李希来, 徐维新, 李林, 颜亮东. 环青海湖地区植物群体结构演替及其气象条件分析[J]. 中国生态农业学报(中英文), 2001, 9(1): 95-97.
引用本文: 张国胜, 李希来, 徐维新, 李林, 颜亮东. 环青海湖地区植物群体结构演替及其气象条件分析[J]. 中国生态农业学报(中英文), 2001, 9(1): 95-97.
ZHANG Guo-Sheng, LI Xi-Lai, XU Wei-Xin, LI Lin, YAN Liang-Dong. Analysis on succession for composition of plant community and its meteorological condition in region around Qinghai Lake[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 95-97.
Citation: ZHANG Guo-Sheng, LI Xi-Lai, XU Wei-Xin, LI Lin, YAN Liang-Dong. Analysis on succession for composition of plant community and its meteorological condition in region around Qinghai Lake[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 95-97.

环青海湖地区植物群体结构演替及其气象条件分析

Analysis on succession for composition of plant community and its meteorological condition in region around Qinghai Lake

  • 摘要: 通过对环青海湖地区天然牧草观测资料分析表明,环湖地区天然草场中冷地早熟禾(Poa crymophila Keng)群体结构变异系数较小,为50%~100%;天山赖草(Leymus tianschanicus Drob.Tzvel.) 变异系数最小,紫花针茅(Stipa purpurea Griseb.)变异系数最大,一般为75%~200%,是当地建群种牧草变异系数最大的天然牧草;紫花针茅、猪毛蒿(Artemisia scoparia Waldst.et Kit)和冷地早熟禾具有抗旱能力弱和对干旱反应敏感的特性,种群结构年际变化不稳定;干生苔草(Carex aridula V. Krecz.)、天山赖草具有较强的气候适应性和抗旱性,种群结构年际变化稳定;干生苔草虽有较强的气候适应性和抗旱性,但水分条件仍是限制其生长的主要气候因子,月际密度变化保持逐月下降趋势。

     

    Abstract: The analysis on observational data from herbage of grassland in region around the Qinghai Lake in Qinghai Province indicated that the variation coefficient of Poa crymophila in plant community was small,being 50%~100%,the least one was Aneurolepidium, but the Stipa purpurea was the largest one being 75%~ 200%,which was one of the dominance plant with largest variation coefficient. The species of Stipa purpurea, Artemisia scoparia and Poa crymophila,which was not stable for yearly changes of plant composition, displayed their character of weak resistance to dry and of the sensitive to dry, the Carex condilapis and Aneurolepidiu had strong adaptability of climate and showed strong resistance to dry, that yearly change of plant composition was stable. The Carex condilapis had strong adaptability of climate and resistance to dry, but the water condition is still main climatic factor which controlled its growth, the monthly change of its density always decreased by month.

     

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