The Ecological and Physiological Adaptation of Kochia sieversiana and the Characteristics of the Communities ECOLOGICAL DOMINANCE OF PLANT COMMUNITY AND ALTITUDINAL GRADIENT ON SOUTHERN OF QINGHAI LAKE BASIN Primary Study on Interrelation Between Plant Communities and Environmental Factors in the North Shore of Qinghai Lake Edge Effect of Gaps in Cunninghamia lanceolata Plantation in Ancaoxia, Fujian Province The Quantitative Characters of Organization of Forest Communities in Guangdong