Composition of aquatic plants and their niche characteristics in wetlands of the Yellow River Delta MEASUREMENT OF COLD RESISTANCE OF AQUATIC PLANTS AND STUDY ON ITS CHARACTERISTICS STUDY OF THE PURIFICATION AND ACCUMULATION OF SILVFR IN WASTE WETER BY AQUATIC PLANTS AN INVESTIGATION ON THE HABITATS OF RARE AND ENDEMIC AQUATIC PLANTS AT WANNINGCOUNTY IN HAINAN PROVINCE Diversity of Aquatic Plants in Hanjiang River Basin and Possible Effects of the Engineering of Transfering Water from South China to North China on it Absorption capacity of nitrogen and phosphorus of aquatic plants and harvest management research A Comparative Study on Aquatic Plant Diversity in Six Lakes of DongtingPoyang District in China Ecological Stoichiometry in Aquatic Ecosystems: Studies and Applications Diversity of Aquatic Vascular Plants in the Yangtze Delta STUDY ON THE REMOVAL OF NITROGEN,PHOSPHORUS AND INHIBITING EFFECT OF ALGAE GROWTH BY AQUATIC PLANTS AN ANALYSIS OF FLORISTIC INTERRELATIONSHIP OF AQUATIC PLANTS BETWEEN NORTHEAST CHINA AND SOME RELATIONAL REGIONS STUDY ON THE GEOGRAPHY OF AQUATIC PLANTS IN NORTHEAST CHINA Aquatic Plant Diversity and Its Changes in Changhu Lake of Hubei Province in China Utilization of harvested aquatic plants as a mulch