RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2005, Vol. 14 >> Issue (5): 570-573.

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AN ECOLOGICAL STUDY ON PLANT COMMUNITY IN ARTIFICIAL WETLAND IN DIANCHI AREA,CHINA

ZHANG Ling, LI Guang-he, ZHANG-Xu, ZHANG Rong-she, TANG Chong-peng   

  • Received:2004-09-20 Revised:2005-02-11 Online:2005-09-20
  • Contact: ZHANG Ling

Abstract: The role and problem of macrophytes in artificial wetlands for wastewater treatment are very important. Macrophytes are essential for the function of artificial wetland, so it is necessary to study macrophytes in artificial wetland. Using methods in community ecology, plant communities in natural wetland (NW) and in two types of artificial wetland, one being free water surface artificial wetland (FWSAW) and the other subsurface flow artificial wetland (SFAW) were investigated in the present study. The results showed that the landscape of FWSAW was more than that of SFAW in terms of aesthetics. The species diversity of plant community in FWSAW was more than that in SFAW, while natural wetland was between FWSAW and SFAW. The number of community layer in FWSAW was close to that in SFAW. Species diversity and Shannon-Wiener index of plant community in SFAW were more than those in FWSAW. This study supports the basic concept for macrophytes research and plant succession of artificial wetland for wastewater treatment. It is suggested that Sagittaria sagittifoliashould be selected to plant in artificial wetland. Sagittaria sagittifoliaand Oenanthe stoloniferashould be selected to plant in FWSAW.

Key words: natural wetland, free water surface artificial wetland, subsurface flow artificial wetland, biodiversity

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