The concept Virtual Forest(VF) is brought up in this paper, whose four basic properties is: the accuracy about the simulated forest, the visual expression of all forest information, to large area, containing the whole...The concept Virtual Forest(VF) is brought up in this paper, whose four basic properties is: the accuracy about the simulated forest, the visual expression of all forest information, to large area, containing the whole information of forest may. The VF of Shangganling Forestry Bureau is very well completed with the surport of Shangganling Forestry Bureau and Forestry Inventory and Planning Institute in Heilongjiang Province, which is the combination of advanced imagine process and GIS, on which the forest characteristics of Shangganling Forestry Bureau is analyzed.展开更多
The model of interspecific association index was constructed in this paper. It is proved that the classical interspecific association statistic is the special case of this model. The derivation of this paper got the u...The model of interspecific association index was constructed in this paper. It is proved that the classical interspecific association statistic is the special case of this model. The derivation of this paper got the unification between interspecific association measurement and its statistic, and between its qualitative analysis and quantitative analysis. The essence of interspecific association index was opened out and the enactment of interspecific association index was developed. Four part specific association indices were constructed on this base, all of the specific association indices were computed respectively to the different radius of sample circle by the permanent sample plot data in Moarshan National Forest Park, Heilongjiang Province, P. R. China. The fourth index was less affected by the size of sample circle, was steady and widely practical.展开更多
文摘The concept Virtual Forest(VF) is brought up in this paper, whose four basic properties is: the accuracy about the simulated forest, the visual expression of all forest information, to large area, containing the whole information of forest may. The VF of Shangganling Forestry Bureau is very well completed with the surport of Shangganling Forestry Bureau and Forestry Inventory and Planning Institute in Heilongjiang Province, which is the combination of advanced imagine process and GIS, on which the forest characteristics of Shangganling Forestry Bureau is analyzed.
文摘The model of interspecific association index was constructed in this paper. It is proved that the classical interspecific association statistic is the special case of this model. The derivation of this paper got the unification between interspecific association measurement and its statistic, and between its qualitative analysis and quantitative analysis. The essence of interspecific association index was opened out and the enactment of interspecific association index was developed. Four part specific association indices were constructed on this base, all of the specific association indices were computed respectively to the different radius of sample circle by the permanent sample plot data in Moarshan National Forest Park, Heilongjiang Province, P. R. China. The fourth index was less affected by the size of sample circle, was steady and widely practical.
