CUTTING LEVEL DETERMINATION OF FUZZY GRAPH CLUSTERING Changes of Species Composition and Diversity in the Restoration Process of Sub-Alpine Dark Brown Coniferous Forests in Western Sichuan,China Dynamics of Forest Gaps in Subalpine Coniferous Forests on the Eastern Slope of Gongga Mountain Changes of soil fertility quality properties under subalpine spruce plantation in Western Sichuan Estimation to Dead Surface Combustible Parameters and Evaluation of Potential Surface Fire Behavior of Artificial Coniferous Forests in Chengde County Biodiversity of main coniferous forests at low elevation of Three Gorges Reservoir area Gap features of subalpine dark coniferous forest in Wolong Nature Reserve ON FUZZY CLASSIFICATION OF CONIFEROUS FORESTS IN TAIBAI MOUNTAINS STRUCTURES OF THE ARTIFICIAL MIXED FORESTS IN THE CLEAR CUT AREA OF SUBALPINE DARK CONIFEROUS FORESTS ON THE UPPER BRANCH OF THE MINJIANG RIVER DISTRIBUTION OF ECTOMYCORRHIZAL FUNGI UNDER SEVERAL CHIEF FOREST TYPES IN ALPINE CONIFEROU REGION OF NORTHWESTERN YUNNAN