Research Of Spatial Distribution Pattern For The Schrenk Spruce Forest

Research of Spatial Distribution Pattern for The Schrenk Spruce Forest Li Minghui (forest management) Supervised by (Pan Cunde) Abstract The property of ecology and morphology of the plant species in forest communities are basic unit of the structure and function of forest ecosystem .Stand spatial distribution pattern is very important in forest survey and growth model .Tbere are various methods in discussing population spatial distribution pattern such as Variance/Mean rnethod,point pattern methods and so on Spatial patterns of Schrenk Spruce and of different age class of Schrenk Spruce were studied using pattern simulation analysis method based on coordinate data sets .The results are as follows :Schrenk Spruce distributed aggregatedly . Spatial pattern of Schrenk Spruce changed in developmental stages . hua ,Iiu distributed aggregatedly and the aggregation is stronger than Schrenk Spruce .Patterns of Schrenk Spruce changed from aggregation to randomness. Using marked point distribution pattern , each measuring elements :age ,breast diameter, height , crown width inhibit themselves. The advantages of Point pattern analysis are that it can analyses species spatial patterns and interspecific associations at any scale.