Nitrous oxide emission from polyculture constructed wetlands: Effect of plant species

Wang, Yanhua; Inamori, Ryuhei; Kong, Hainan; Xu, Kai; Inamori, Yuhei; Kondo, Takashi; Zhang, Jixiang

doi:10.1016/j.envpol.2007.06.017

Cited by 55 publications

(20 citation statements)

References 38 publications

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“…The contribution of plant-mediated CH 4 flux varied substantially among species and wetland types (Whiting and Chanton 1992;Ding et al 2005;Dorodnikov et al 2011). Similarly, lower (Johansson et al 2003;Maltais-Landry et al 2009) and higher (Rückauf et al 2004;Wang et al 2008) N 2 O emissions have been reported in artificial wetlands with plants, as compared to those without plants. Therefore, the mechanisms describing the effects of plants on CH 4 and N 2 O fluxes from wetlands remain unclear.…”

Section: Introductionmentioning

confidence: 99%

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Cai

Yao

et al. 2015

Plant Soil

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Aims Plants have been suggested to have significant effects on methane (CH 4 ) and nitrous oxide (N 2 O) fluxes from littoral wetlands, but it remains unclear in subtropical lakes. Methods We conducted in situ measurement of CH 4 and N 2 O fluxes for two years. To distinguish between the effects of shoots and roots, three treatments (i.e., intact plants as control, shoot clipping, and root exclusion) were used. Effects of plant biomass, temperature, and soil moisture on CH 4 and N 2 O fluxes were analyzed. Results The mean ecosystem CH 4 emission rate was 36 μg CH 4 m −2 h −1 for drying periods, but 8219 μg CH 4 m −2 h −1 for drying-wetting transition periods. CH 4 fluxes were positively correlated with below-ground and total biomass, but not with above-ground biomass. Clipping did not significantly alter CH 4 flux rate, but root exclusion decreased the CH 4 flux by 116 % as compared to the control. N 2 O emissions were similar for both the drying and drying-wetting transition periods, with a mean rate of 20 μg N 2 O m −2 h −1 . Both clipping and root exclusion significantly increased N 2 O fluxes as compared to the control. Conclusions There was no significant correlation between CH 4 and N 2 O fluxes. Roots dominated plantmediated enhancement in CH 4 fluxes, but played almost an equal role as shoots in plant-regulated suppression on N 2 O fluxes in this Carex meadow during drawdown periods.

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Section: Introductionmentioning

confidence: 99%

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Cai

Yao

et al. 2015

Plant Soil

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“…Apart from the soil type, plant species is also known to affect N 2 O emissions. Several researchers have documented a wide variation of N 2 O fluxes amongst different plants (Skiba and Smith, 2000;Rückauf et al, 2004;Dick et al, 2006;Xiong et al, 2006;Wang et al, 2008) -N loading and a fixed soil moisture content. The leachate was sampled from Hangzhou Tianziling landfill as previously described by Zhang et al (2008a).…”

Section: Introductionmentioning

confidence: 99%

Minimisation of N2O emissions from a plant-soil system under landfill leachate irrigation

Zhang

Shao

et al. 2009

Waste Management

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“…These processes are affected by various operating parameters and environmental conditions, such as dissolved oxygen (DO), hydraulic retention time (HRT), supplies of available organic carbon, pH, nitrate (NO 3 -), nitrite (NO 2 -), water temperature, and so on [9][10][11]. It has been reported that N 2 O is emitted from constructed wetlands [5,[12][13][14]. However, effective parameters for N 2 O emission control have been scarcely established.…”

Section: Introductionmentioning

confidence: 99%

Relationships of nitrous oxide fluxes with water quality parameters in free water surface constructed wetlands

Zhang

Jia

et al. 2009

Front. Environ. Sci. Eng. China

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The effects of chemical oxygen demand (COD) concentration in the influent on nitrous oxide (N 2 O) emissions, together with the relationships between N 2 O and water quality parameters in free water surface constructed wetlands, were investigated with laboratoryscale systems. N 2 O emission and purification performance of wastewater were very strongly dependent on COD concentration in the influent, and the total N 2 O emission in the system with middle COD influent concentration was the least. The relationships between N 2 O and the chemical and physical water quality variables were studied by using principal component scores in multiple linear regression analysis to predict N 2 O flux. The multiple linear regression model against principal components indicated that different water parameters affected N 2 O flux with different COD concentrations in the influent, but nitrate nitrogen affected N 2 O flux in all systems.

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Nitrous oxide emission from polyculture constructed wetlands: Effect of plant species

Cited by 55 publications

References 38 publications

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Minimisation of N2O emissions from a plant-soil system under landfill leachate irrigation

Relationships of nitrous oxide fluxes with water quality parameters in free water surface constructed wetlands

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