The population structure and dynamics of Populus euphratica at the upper reaches of the Tarim River Studies on the Secondary Xylem Anatomy of Hippophae rhamnoides under Different Habitats The seasonal change of endogenous phytohormone and differentiation of populations in Tetraena mongolica in different habitats Size-Class Structure and Distribution Pattern of Emmenopterys henryi in Different Habitats Analysis on morphological characteristics and effective composition contents of Houttuynia cordata in different habitats Quantitative analysis of the effects of Stipa krylovii and Leymus chinensis on the factors of vitiality of Oedaleus decorus asiaticus Establishment of quality evaluation system and difference analysis on roots of Codonopsis pilosula from different habitats Study on quality of Salvia miltiorrhiza from different habitats sup>Effect of different habitats and floral characteristics on fruit set in Epimedium wushanense Electroantennogram and behavioural responses of two varieties of Leis axyridis from three types of habitats to aphid-damaged tea shoot volatiles and aphid kairomones The change of water parameters in Tetraena mongolica with season and habitat Establishment of quality evaluation system and difference analysis on roots of Codonopsis pilosula from different habitats Population Dynamics of Ranalisma rostratum, an Endangered Species Growing in Different Comparative study on clonal and sexual reproductive traits of Leymus chinensis populations in different habitats Response of Leaf Anatomical Characteristics of Nitraria tangutorum Bobr.from Different Populations to Habitats Comparison on ginsenosides in Panax ginseng from different habitats in northeast China and its processed products Comparative analysis of morphological characteristics and effective composition contents of Epimedium pubescens in different habitats Analysis on the growth characteristics of Eupatorium catarium in different types of habitats