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Effects of Thinning Intensity on Structure Characteristics and Spatial Distribution of Quercus wutaishanica Populations Population structure and demography of Populus euphraticu in upper and middle reaches of Tarim River Population Structure and Distribution Pattern of Pinus massoniana on Laoshan Island of Qiandao Lake Region DENSITY, STRUCTURE AND BIOMASS OF PARASHOREA CHINENSIS POPULATIONS IN DIFFER ENT PATCHES IN XISHUANGBANNA, SW CHINA Judging method of individual age and age structure of Stellera chamaejasme population in degraded steppe Study on Population Life Table and Survivorship Curves of Adenophora lobophylla, an Endangered Species, Compared with A. potaninii, a Widespread Species Study on Dynamics of Juglans mandshurica Population from Changbai Mountain Effects of Different Management Practices on Population Structure and Dynamics of Quercus liaotungensis The Life Table and Dynamics of Populations of Monimopetalum chinense, an Endangered Plant The demography and age structure of the endangered plant population of Cathaya argyrophylla