Interspec ies Connection of Dom inant Tree Spec ies inCepha lotaxus fortune i Commun ities Photosynthetic traits of the endangered plant species Torreya jackii Spatial Pattern of Pteroceltis tatarinowii Populations in Langya Moutain of Anhui Province Spatial Patterns and Associations in a Birch-fir Forest in Mt. Taibai An Analysis of Interspecific Associations in Secondary Succession Forest Communities in Heishiding Natural Reserve, Guangdong Province Population structure and spatial patterns for the main tree species in Castanopsis carlesii-Schima superba community in Tiantong, Zhejiang Province, China Analysis of interspecific associations among major tree species in three forest communities on the north slope of Changbai Mountain Age Structure and Spatial Distirbution Patterns of Taxus yunnanensis Population in Lanping County,Yunnan Province Study on Interspecific Associations of Natural Nitraria tangtorum Population and Its Main Companion Species in Ulanbuh Desert Dynamics of species diversity and interspecific associations of herbaceous plants in a Pinus Tabulaeformis forest on a sandy site in Chifeng, China Quantitative Classification and Ordination of Wetland Vegetations in the Reaches of the Hutuo River