Health assessment of forest ecosystem based fuzzy synthesis assessment

According to the disadvantages of the assessment methods, considering complexity and limitation of assessment indexes, a comprehensive model for forest ecosystem health evaluation is established. By establishing forest ecosystem health evaluation index system, combining variation coefficient method with fuzzy mathematics theory, and making use of variation coefficient to obtain the weight of every index, the fuzzy mathematics method is used to make a comprehensive evaluation of forest ecosystem health. Meanwhile, the model is used to analyze the health condition of Quercus acutissima and Pinus massoniana forest in the south-mountainous area of Henan province. Results indicate that the model makes forest ecosystem health evaluation more comprehensive, more scientific and more coincident than practical situation, which provides scientific basis for project decision-making.