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。
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.
出处
《青海畜牧兽医杂志》
1992年第1期7-10,共4页
Chinese Qinghai Journal of Animal and Veterinary Sciences
关键词
分布格局
嵩草
种群
高寒草甸
South Qinghai Alpine Meadow
Kobresia species
Distribution patterns
