PRELIMINARY STUDIES ON THE FLORA OF THE BAOTIANMAN NATURAL RESERVE The Medical Plant Resources in Baotianman, Henan Province and the Conservation Strategies Niche characteristics of plant populations in deciduous broad leaved forest in Baotianman Biomass and net productivity of Quercus variabilis forest in Baotianman Natural Reserve Studies on biomass and net production of Quercus acutidentata forest in Baotianman Nature Reserve QUANTITATIVE CLASSIFICATION AND ORDINATION OF PLANT COMMUNITIES IN BAOTIANMAN,HENAN PROVINCE STUDY ON SPECIES DIVERSITY OF PLANT COMMUNITIES IN BAOTIANMAN Species Diversity Characteristics of Quercus spp. Community of Different Series Stage After Fire in Baotianman National Nature Reserve in Neixiang County Bacterial community structure and diversity in soils of different forest ages and types in Baotianman forest, Henan Province, China. A STUDY ON QUERCUS SERRATA COMMUNITY CHARACTERISTICS IN BAOTIANMAN AREA,HENAN PROVINCE A Floristic Study of Some Rare and Threatened Orchids in Baotianman Nature Reserve