Eutrophication Assessment in Songbei wetlands:a comparative methods
Urban wetland is the important part in urban eco-system, whose judge standard is eutrophication assessment. A 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 (CODmn), biological oxygen demand (BODs)andammonia-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, upper-mesotrophic, 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 Bing-Xue Guan-Ming
School of urban and environmental science,Xuchang versity,Xuchang,Henan,461000 School of economics and management,Xuchang University,Xuchang,Henan,461000
国际会议
International Conference on Environment Simulation and Pollution Control(第六届环境模拟与污染控制学术研讨会)
北京
英文
33-34
2009-11-01（万方平台首次上网日期，不代表论文的发表时间）