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| Titel |
An optimisation approach for shallow lake restoration through macrophyte management |
| VerfasserIn |
Z. H. Xu, X. A. Yin, Z. F. Yang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 18, no. 6 ; Nr. 18, no. 6 (2014-06-17), S.2167-2176 |
| Datensatznummer |
250120382
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| Publikation (Nr.) |
 copernicus.org/hess-18-2167-2014.pdf |
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| Zusammenfassung |
| Lake eutrophication is a serious global environmental issue. Phytoremediation
is a promising, cost-effective, and environmentally friendly technology for
water quality restoration. However, besides nutrient removal, macrophytes
also deeply affect the hydrologic cycle of a lake system through
evapotranspiration. Changes in hydrologic cycle caused by macrophytes have a
great influence on lake water quality restoration. As a result of the two
opposite effects of macrophytes on water quality restoration (i.e. an
increase in macrophytes can increase nutrient removal and improve water
quality while also increasing evapotranspiration, reducing water volume and
consequently decreasing water quality), rational macrophyte control through
planting and harvest is very important. In this study, a new approach is
proposed to optimise the initial planting area and monthly harvest scheme of
macrophytes for water quality restoration. The month-by-month effects of
macrophyte management on lake water quality are considered. Baiyangdian Lake
serves as a case study, using the common reed. It was found that water
quality was closest to Grade III on the Chinese water quality scale when the
reed planting area was 123 km2 (40% of the lake surface area)
and most reeds would be harvested at the end of June. The optimisation
approach proposed in this study will be a useful reference for lake
restoration. |
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