Study On Adaptability Evaluation Method Of Regional Forest Main Disasters And Forest Space Structure Relation

Forest is the main part of the whole land ecosystem; it is also the main factor of human society's development and environment construction. The forest disaster mentioned here refers to the hazardous effect on biosphere and human society caused by nature and human's destroy. In our country, forest disaster has formed serious pressure and threat to the national economic development so the forest disaster prevention is an important content to fulfill the sustainable lead to forest disaster is extremely complex, and people can't anticipate its occurrence and handle it easily, but using the omen target monitor analysis, forecasting at the right moment, making effective and timely decision owe the ways to avoid and reduces the occurrence of forest disaster.In order to meet the need of research on regional forest spatial structure and management on prevention of forest disaster, on the basis of analysis on forest disaster research situation, forest disaster's characters and rules, formation mechanism of forest spatial structure, the theory and using situation of spatial structure analysis technology. This paper proposed an idea that the occurrence and spread of forest disaster is correlated with regional forest spatial structure closely, and then to research on the compatible appraisement on the relations of forest disaster and forest spatial structure.In view of the questions proposed, taking the forest spatial structure as a breakthrough point, the paper has discussed the main factors that how forest spatial structure influence forest disaster and analyzed the character of forest disaster and its spatial relationship with society, economy, and nature environment. Considered the complex and variable and other uncertain factors the paper introduced the spatial target and proposes the forest main disaster and the forest spatial structure compatibility assessment method.In order to set up the assessing method for the compatibility between forest main disaster and the spatial structures, the thought of setting up dynamic compatibility assessing system was brought forward, based on the analysis of factors which can cause forest disasters. The forming of index system and the method of dynamic assessment was also studied in this paper, in order to suit for different space and hour, different assessing objects and different customer requirement.Based on the forest main disaster compatibility appraisal frame, the forest-fire hierarchical structure appraisal target system mainly by stability criteria was proposed. By establishing many kinds of target weight computational method, the traditional analytic hierarchy method was improved. Based on the extraction rule of general target attribute value, the single target appraisal and quality synthetically evaluation model were established. Simultaneously, the unstable target appraisal pattern mainly based...