Trophic Classification for Lakes ☆
Encyclopedia of Ecology, Vol: 1, Page: 487-494
2019
- 2Citations
- 26Captures
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Book Chapter Description
The ecological indicators for trophic classification for lakes were reviewed. A case study of trophic classification and their spatial distributions in a large shallow Chinese lake (Lake Chaohu) was presented based a GIS-based method. A trophic state index (TSI) consisting of six physical, chemical, and biological indicators including total phosphorus (TP), total nitrogen (TN), chemical oxygen demand (COD), Secchi disk depth (SD), chlorophyll-a concentration (Chl- a ), and phytoplankton biomass (CA) was constructed to describe the eutrophication state of the lake environment. A 0–100 eutrophication scale was also developed to indicate seven different trophic levels within the lake environment: oligotrophic, lower-mesotrophic, mesotrophic, upper-mesotrophic, eutrophic, hypereutrophic, and extremely hypereutrophic. A representation of the spatial distribution of TSI TP, TSI TN, TSI COD, TSI SD, TSI Chl-a and TSI CA was developed using the inverse distance weighted (IDW) interpolation method. By categorizing the interpolated values, a clear illustration of the different trophic levels was developed on six thematic maps. A geographical information system (GIS) overlay technique was applied to synthesize the information from the six thematic maps into a final map illustrating the spatial distribution of eutrophication conditions within the study area. The different periods or levels associated with lake eutrophication assessment using GIS were then discussed.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/B9780124095489111765; http://dx.doi.org/10.1016/b978-0-12-409548-9.11176-5; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85143688828&origin=inward; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85079252505&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/B9780124095489111765; https://dx.doi.org/10.1016/b978-0-12-409548-9.11176-5
Elsevier BV
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