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根据祁连山林区青海云杉群落16块样地256个样方的调查结果,对青海云杉群落的垂直结构、种群空间分布格局进行了研究。结果表明:青海云杉群落垂直结构分化明显,一般分为乔木层,灌木层,草本层和苔藓层4层;乔木层和青海云杉种群呈聚集分布格局,乔木种群聚集强度大小依次为:青海云杉混交林>青海云杉群落>灌木-青海云杉林>马先蒿-青海云杉林>苔藓-青海云杉林>草类-青海云杉林。不同林型的垂直结构、空间分布格局都存在一定的差异,草类-青海云杉林中乔木种群呈随机分布,其它林型和青海云杉群落中乔木种群均为聚集分布。苔藓-青海云杉林、草类-青海云杉林、灌木-青海云杉林中青海云杉种群都有随海拔升高由均匀分布向聚集分布逼近的特点。苔藓-青海云杉林是该群落中最稳定的林型,青海云杉种群对维持群落稳定起决定性作用。
According to the survey results of 256 quadrats in 16 plots of Picea crassifolia community in Qilian Mountains, the spatial distribution pattern of vertical structure and population of Picea crassifolia community were studied. The results showed that the vertical structure of Picea crassifolia community was well differentiated and generally divided into 4 layers of tree layer, shrub layer, herb layer and moss layer. The population of tree layer and Picea crassifolia population was clustered and distributed. Spruce Mixed Forest> Picea crassifolia Community> Shrub - Picea crassifolia Forest> Artemisia sphaerocephala - Picea crassifolia forest> Moss - Picea crassifolia forest> Grass - Picea crassifolia forest. There were some differences in the vertical structure and spatial distribution of different forest types. The tree species in grasses-Picea crassifolia forests were randomly distributed, while those in other forest types and Picea crassifolia communities were aggregated. Moss - Picea crassifolia, grassland - Picea crassifolia forest, shrub - Qinghai spruce forest Picea crassifolia populations have the characteristics of uniform distribution to the aggregation distribution with elevation above sea level. Moss - Picea crassifolia forest is the most stable forest in this community, Picea crassifolia populations play a decisive role in maintaining community stability.