Studies on the Interspecific Association of Dominant Species in a Subtropical Catanopsis fargesii Forest of Jinyun Mountain, China Interspecific Relationships among the Dominant Weeds Species of Tobacco Field in Guizhou Province Study on interspecific association among dominant species of Castanopsis carlesii commutity in Wuyi Mountains Studies on the Interspecific Association among the Kingdonia uniflora and Its Companion Species in Taibai Mt. Interspecific Correlations among Bryophytes and among Bryophytes and Vascular Plants in Two Scales in Jinchuan Peatland Interspecific Association in the Community with the Endangered Plant Euonymus chloranthoides