Eutrophication Assessment in Songbei Wetlands:a Comparative Methods HAN Bingxue
Urban wetland is the important part in urban ecosystem, whose judge standard is eutrophication assessmentA comparative method of urban wetland eutrophication assessment was undertaken in Songbei wetlands to study the spatial distribution of eutrophication conditions in urban wetland environments.A modified trophic state index (TLI) consisting of six physical, chemical and biological indicators including total phosphorus (TP), total nitrogen (TN), chlorophyll-a concentration (chl-a), chemical oxygen demand (CODmin), biological oxygen demand (BOD5) and ammonia-nitrogen (NH3-N) was constructed to describe the eutrophication state of the wetland environment. A 0-100 eutrophication scale was also developed to indicate seven different trophic levels within the wetland environment: oligotrophic, lower-mesotrophic,mesotrophic,uppermesotrophic, eutrophic, hypereutrophic and extremely hypereutrophic. Rank of eutrophication result from scoring method and corresponding weighted eutrophication indexes model (CWEIM) which implies water in Songbei wetlands is deteriorating, no matter what difference between the two methods.
Songbei wetlands Eutrophication score method CWEIM
HAN Bingxue
Xuchang University College of urban planning and environmental science Xuchang,China
国际会议
厦门
英文
21-24
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）