On the Relation between Vegetation and Environment in Southern Song Nen Plain INTERSPECIFIC RELATIONSHIPS AND ENVIRONMENTAL INTERPRETATION OF THE MAIN TREE SPECIES IN THE FOREST COMMUNITIES OF ZHUWEIGOU IN LISHAN MOUNTAIN NATURE RESERVE Classification of ecological types of the Chinese yak Variations in the Volatile Organic Compound Emission Potential of Plant Functional Groups in the Temperate Grassland Vegetation of Inner Mongolia, China Statistical analysis to ecological group of Thaliacea in the East China Sea Quantitative Character Structures of the Natural Populations of Wild Soybean in Hebei Province Variations in Composition and Water Use Efficiency of Plant Functional Groups Based on Their Water Ecological Groups in the Xilin River Basin The Regeneration of Tree Species in the Mixed Evergreen-deciduous Broad-leaved Forests in the Shennongjia Mountains, Hubei Province