Research on Bioecological Characteristics of Suaeda physophora and Its Community at the Hutubi Cattle Farm Area of Xinjiang, China THE BIOECOLOGICAL CHARACTERISTICS OF HALOCNEMUM STROBILACEUM AND ITS COMMUNITY ON THE BORDER OF OASIS IN HUTUBI , XINJIANG QUANTITATIVE ANALYSIS AND CHARACTERISTICS OF WATER-SOLUBLE SALT CONTENTS IN 13 DOMINANT PLANT SPECIES IN THE AREA OF HUTUBI CATTLE FARM, XINJIANG