The diurnal course of photosynthesis of the endangered species Tibetan Cupressus gigantea in Tibet Plateau Relation between Being Endangered and Seed Vigor about Cupressus gigantea in Tibet PRELIMINARY REPORT ON SEEDLING RAISING EXPERIMENT FOR INTRODUCING CUPRESSUS GIGANTEA IN EASTERN FUJIAN PROVINCE Studies on Image Automated Analysis and Recognition of Plant Chromosome Eco-geographic Distribution and Coenology Characteristics of Cupressus gigantea Study on the Characteristics of Cupressus gigantea Communtiy in Tibet Karyotype Analyses in Cupressus gigantea