Relationship between Bryophytes Distribution and Environmental Factors in Urban Beijing On Saxicolous Moss Species and Their Relationships with Environmental Factors Based on Ordination Analysis in Beishan, Jinhua, Zhejiang Province Factors affecting understory herb community botanical composition in a dry valley ecotone in the upper reaches of the Minjiang River, Southwest China Relationships between Vegetation Distribution, Species Diversity of Subalpine Meadow and Soil Chemical Factors in the Yundingshan, China Relationships between terrestrial bryophytes and eco-environmental factors in Baihua Mountain National Nature Reserve in Beijing Interrelation between Plant Species Diversity and Soil Factors in the Middle and Lower Reaches of Fenhe River Relationships Between Stand Spatial Structure Characteristics and Influencing Factors of Broad-leaved Korean Pine(Pinus koraiensis) Forest in Liangshui Nature Reserve,Northeast China