A shallow lake remediation regime with Phragmites australis : Incorporating nutrient removal and water evapotranspiration

Zhao, Ying; Zhang, Yang; Xia, Xinghui; Wang, Fei

doi:10.1016/j.watres.2012.07.053

Cited by 65 publications

(49 citation statements)

References 32 publications

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“…The monthly average nutrient inputs for total nitrogen (TN) and total phosphorus (TP) are 21.83 and 0.56 t, respectively (Zhao et al, 2010). The average TN and TP concentrations of water sample in the lake are respectively 5.15 and 0.54 mg L −1 (Zhao et al, 2012), which are much worse than the desired level for Grade III on the Chinese water quality scale (State Environmental Protection Administration of China, 2002). …”

Section: Description Of the Study Sitementioning

confidence: 99%

“…The two curves in the figure are extrapolated based on the nutrient balance and water quantity balance investigated in this study. In both situations reeds are harvested at the end of September, according to prior research (Zhao et al, 2012). The time period in the figure runs from the beginning of May in one year to the same time in the following year.…”

Section: Effect Of Initial Reed Area On Water Qualitymentioning

confidence: 99%

“…increased macrophytes can increase nutrient removal and improve water quality while also increasing evapotranspiration, reducing water volume in a lake and consequently decreasing water quality -the management of macrophyte populations is very significant for shallow lakes. Zhao et al (2012) determined optimal reed density through a field simulation experiment considering the two effects of macrophytes on water quality. The average reed density in the current reed growth zone of Baiyangdian Lake is 120 plants m −2 .…”

Section: Introductionmentioning

confidence: 99%

“…Both planting density and area are key parameters for managing macrophytes in a lake although no research has proposed an optimisation approach for macrophyte planting area. Zhao et al (2012) suggested that the aboveground biomass of reeds should be harvested in September because the highest aboveground nutrient storage occurred in this month. The underlying rationale for this suggestion is that this harvest scheme could remove most of the nutrients from the lake and consequently make the water quality better in the following months.…”

Section: Introductionmentioning

confidence: 99%

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An optimisation approach for shallow lake restoration through macrophyte management

Yin

Zhang

2014

Hydrol. Earth Syst. Sci.

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Abstract. Lake eutrophication is a serious global environmental issue. Phytoremediation is a promising, costeffective, 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 km 2 (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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Section: Description Of the Study Sitementioning

confidence: 99%

Section: Effect Of Initial Reed Area On Water Qualitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An optimisation approach for shallow lake restoration through macrophyte management

Yin

Zhang

2014

Hydrol. Earth Syst. Sci.

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“…Además, la evapotranspiración también depende de otros factores entre los que destacan el área y volumen de agua en el humedal y la cobertura vegetal. En un estudio llevado a cabo en un lago de China, encontraron que cuando la cobertura vegetal del carrizo en el sistema fue del 100%, la evapotranspiración fue aproximadamente el doble que sin carrizo (Zhao et al, 2012a).…”

Section: Conductividad Eléctricaunclassified

Estudio de los Humedales Artificiales de Flujo Superficial del Tancat de la Pipa como instrumentos para la restauración ambiental del lago de l'Albufera de Valencia

Rajadel¹

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Implication of Nitrifying and Denitrifying Bacteria for Nitrogen Removal in a Shallow Lake

Wang

Zhao

Xie

et al. 2017

CLEAN Soil Air Water

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The relationship among reed nitrogen (N) uptake, nitrifying and denitrifying bacteria, and N content in the rhizosphere sediment was studied based on field investigation in terrestrial zone (TZ), ecotone zone (EZ), and submerged zone (SZ) of Baiyangdian Lake, the largest natural freshwater body of Northern China. The results showed that the total nitrogen (TN) content in the rhizosphere sediment decreased with increased aboveground reed TN storage, achieving the highest decrease rate of 68.6–78.6% when the aboveground reed TN storage reached its maximum in September. A positive correlation could be shown between amoA‐type nitrifier assemblages and ammonium (NH4+) content in the rhizosphere sediment. However, the correlation between nirS‐type denitrifiers and nitrate (NO3−) in the rhizosphere sediment was not significant. The amoA‐type nitrifier and nirS‐type denitrifier assemblages were significantly correlated with air temperature in each zone (p < 0.01). The quantity of amoA‐type nitrifiers in the TZ was 48.3% higher compared with the SZ, whereas the average number of nirS‐type denitrifiers in the submerged zone was twice than that in the TZ. These results imply that reed growth and environmental conditions, including air temperature and water level, are important for N removal in shallow lakes.

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A shallow lake remediation regime with Phragmites australis : Incorporating nutrient removal and water evapotranspiration

Cited by 65 publications

References 32 publications

An optimisation approach for shallow lake restoration through macrophyte management

An optimisation approach for shallow lake restoration through macrophyte management

Estudio de los Humedales Artificiales de Flujo Superficial del Tancat de la Pipa como instrumentos para la restauración ambiental del lago de l'Albufera de Valencia

Implication of Nitrifying and Denitrifying Bacteria for Nitrogen Removal in a Shallow Lake

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