| 青南高原高寒草甸四种嵩草种群分布格局初探 |
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| 引用本文： | 李希来,张国胜.青南高原高寒草甸四种嵩草种群分布格局初探[J].青海畜牧兽医杂志,1992,22(1):7-10. |
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| 作者姓名： | 李希来 张国胜 |
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| 作者单位： | 青海畜牧兽医学院，青海畜牧兽医学院，青海省气象局 |
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| 摘 要： | 运用序列样方法,调查了四种嵩草枝条密度,通过方差:均值t 检验法、x~2值检验法和森下(Morisita)捐数Ⅰ_Δ判别法初步得出:高山嵩草分布格局为随机的群聚型;线叶嵩草、别氏嵩草和矮嵩草分布格局都属于非随机的群聚型。高山嵩草没有发现群聚斑块存在,其余三种嵩草有二个群聚斑块存在。并计算了各级样方内两两种的相关系数。
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| 关 键 词： | 分布格局 嵩草 种群 高寒草甸 |
THE PRELIMINARY STUDY ON THE DISTRIBUTION PATTERNS OF FOUR KOBRESIA POPULATIONS IN ALPINE MEADOW ON SOUTH QINGHAI PLATEAU |
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| Li Xilai.THE PRELIMINARY STUDY ON THE DISTRIBUTION PATTERNS OF FOUR KOBRESIA POPULATIONS IN ALPINE MEADOW ON SOUTH QINGHAI PLATEAU[J].Chinese Qinghai Journal of Animal and Veterinary Sciences,1992,22(1):7-10. |
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| Authors: | Li Xilai |
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| Institution: | Qinghai Animal Husbandry and Veterinary Medicine College |
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| Abstract: | The branch de cies of 4 Kobresia species are investigated by the align-ment sampling method.By t-test of variance:mean ratio x~2-test aridMorista index,the results show that:the distribution pattern of AlpineKobrasia (Kobresis pygmaea)is random contagious and that of Capil-lary leaf Kobresia(K.capillifolia),Tiuzhi Kobrosia(K.jiuzhiana)andDwarf Kobresia (K.hnmilis),nonrandom contagious.The contagiouspatche is not found in Dwarf Kobresia species,but two patehes found in theother throe species and the correlation coefficient between 2 species inevery samples are calculated. |
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| Keywords: | South Qinghai Alpine Meadow Kobresia species Distribution patterns |
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