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Effects of human disturbance on species diversity of Phoebe zhennan communitis in Jinfengshan Moutain in western Sichuan Ecological Studies on Vegetation Quantity in the Semi-Arid Valley Region of Lasa Effects of Forest Gap on Underforest Species Diversity in a Cryptomeria fortunei Plantation in Zhougong Mountain,West Sichuan Community ecology of Acanthopanax giraldii in west Sichuan plateau Population Structure of Natural Secondary Acer mono Forest A Preliminary Study of the Regulation and Competition of the Dominant Plant Populations in Xujiaba Region, Ailao Mts Tunnan Community Composition and Interspecific Association Analysis of Kobresia capillifolia Grassland Influence of yak grazing on plant niche characteristics in alpine meadow communities at the northeastern edge of the Qinghai-Tibetan Plateau Analysis of connectivity on greenland landscape in metropolitan region of Chongqing City Effect of Altitude on Structure and Species Diversity of Cunninghamia lanceolata Plantation in Jiangyou District,Sichuan Province Species Composition and Regeneration Characteristics of Main Woody Plant Seedlings in a Pine-oak Mixed Forest in Qinling Mountains Difference of ecological dominance of meadow population on different tourism disturbance Study on Characteristics of Plant Niche in Maqu Alpine Desertified Meadow Study on Community Quantity Character in Alpine Mixed-sown Grassland under Different Grazing Intensities Influence of urea application on aboveground biomass and important value of the species in the degraded grassland Effect of Nitrogen Addition on the Specific Leaf Area and Important Value of Dominant Species in the Typical Steppe of the Loess Plateau, China Effects of Enclosure Years on the Grassland Community Characteristics and Pasture Mass Index of Seriphidium transiliense Desert Grassland STUDY ON COMMUNITY CHARACTERISTICS OF NATURAL FOREST IN BETULA LUMINIFERA Researches on weed niche in turf Correlation Analysis Between Landscape Characteristics of Ecotourist Vegetation and Geographical Factors in Luya Mountain Relationship Between Tourism Development and Vegetation Environment in Luya Mountain Nature Reserve I. Quality Analysis of Vegetation Environment Characteristics of Gap Makers and Plant Diversity in Picea asperata and Abies fabri Forest in Xiaoxing’an Mountains Determine the Boundaries of Grassland Communities Based on Species Important Value and Soil Moisture content Effect of Climate Change on the Stipa krylovii Grassland Vegetation of Hulun Buir