摘要
用两项局部样方方差（ＴＴＬＱＶ）法和成对样方方差（ＰＱＶ）法研究了高寒矮嵩草草甸优势植物矮嵩草（Ｋｏｂｒｅｓｉａｈｕｍｉｌｉｓ）源株种群（ｇｅｎｅｔｐｏｐｕｌａｔｉｏｎ）和分株种群（ｒａｍｅｔｐｏｐｕｌａｔｉｏｎ）的空间分布格局。以方差均值比率（Ｓ￣２／Ｘ）的ｔ－检验和Ｘ￣２－检验对分布型进行检测。结果表明矮嵩草两种群结构水平的空间分布型完全不同，源株种群为随机分布，分株种群则为集聚分布。分株种群集聚分布格局的规模、强度和纹理在水平空间上与放牧强度的变化表现出一致性的关系。
The spatial distribution patterns of the genet population and theramet population of dominant plant Kobresia humilis were studied by TTLQVand PQV methods in alpine Kobresia humilis meadow.The types of patternwera examined by t-test and X￣2-test for variance/mean value(s￣2/).Theresults showed that there was a remarkable difference in type of distributionpattern between the two levels of population structure in Kobresia humilis.Thetype of pattern displayed poisson distribution for genet population and clumpdistribution for ramet population。There were identical changes between seale,intensity,grain of ramet population distribution pattern and the stocking inten-sity in horizontal space.
出处
《青海畜牧兽医杂志》
1994年第1期1-4,共4页
Chinese Qinghai Journal of Animal and Veterinary Sciences
基金
中国科学院海北高寒草甸生态系统定位站基金
关键词
矮嵩草
源株种群
分株种群
Kobresia humilis,genet population,ramet population,distribu-tion pattern
