Response of methane emission to invasion of Spartina alterniflora and exogenous N deposition in the coastal salt marsh

Zhang, Yaohong; Ding, Weixin; Cai, Zucong; Valerie, Phillips; Han, Fengxiang X.

doi:10.1016/j.atmosenv.2010.08.012

Cited by 58 publications

(35 citation statements)

References 41 publications

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“…This result is consistent with the conclusions of Cheng et al (2007) and Zhang et al (2010) who observed more CH 4 emissions from the invasive S. alterniflora marsh than those from the native marshes. The results of many studies showed that plant species are important drivers of CH 4 emission in wetland ecosystems (Whiting and Chanton, 1993;Ding et al, 2005;Kao-kniffin et al, 2010).…”

Section: Effects Of S Alterniflora Invasion and Exogenous N Additionsupporting

confidence: 83%

“…Zhang et al (2007) observed that the application of NH 4 NO 3 with the rates of 6 g N/m 2 , 12 g N/m 2 and 24 g N/m 2 increased CH 4 emission by 181%, 254% and 155%, respectively, in a freshwater marsh in the Sanjiang Plain of China. Zhang et al (2010) suggested that N addition significantly increased CH 4 emissions from S. alterniflora and S. salsa marshes. We considered that the differences of plant species and biomass, amount and forms of added N, substrate properties and obser- The results of this study also indicated that, in the N1 treatment, the N addition significantly stimulated CH 4 emission in the invasive S. alterniflora marsh rather than in the native C. malaccensis marsh, which was consistent with the results of Zhang et al (2010).…”

Section: Effects Of S Alterniflora Invasion and Exogenous N Additionmentioning

confidence: 99%

“…Zhang et al (2010) suggested that N addition significantly increased CH 4 emissions from S. alterniflora and S. salsa marshes. We considered that the differences of plant species and biomass, amount and forms of added N, substrate properties and obser- The results of this study also indicated that, in the N1 treatment, the N addition significantly stimulated CH 4 emission in the invasive S. alterniflora marsh rather than in the native C. malaccensis marsh, which was consistent with the results of Zhang et al (2010). While in the N2 treatment, the increase of CH 4 emission in S. alterniflora marsh was lower than that in C. malaccensis marshes, and the probable reason might be the excess N imported into the ecosystems inhibited the activities of microbe in S. alterniflora marsh.…”

Section: Effects Of S Alterniflora Invasion and Exogenous N Additionmentioning

confidence: 99%

“…Increasing N loading may have strong effects on CH 4 emissions from the estuarine environments by influencing plant growth , changing the biological and chemical properties of soils (Min et al, 2011), stimulating the microbial processes (Blagodatskaya et al, 2007;Inselsbacher et al, 2011). Zhang et al (2010) studied the CH 4 emissions in the Wanggang coastal marsh and found that exogenous N addition dramatically stimulated CH 4 emission from the Spartina alterniflora mesocosm, and the effect of N addition on CH 4 emission from the native Suaeda salsa mesocosm was not significant. Moseman-Valtierra et al (2011) reported that CH 4 fluxes were not significantly affected by nitrate addition in the coastal marsh.…”

Section: Introductionmentioning

confidence: 99%

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Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China

et al. 2014

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Abstract:The nitrogen (N) input and Spartina alterniflora invasion in the tidal marsh of the southeast of China are increasingly serious. To evaluate CH 4 emissions in the tidal marsh as affected by the N inputs and S. alterniflora invasion, we measured CH 4 emissions from plots with vegetated S. alterniflora and native Cyperus malaccensis, and fertilized with exogenous N at the rate of 0 (N0), 21 (N1) and 42 (N2) g N/(m 2 ·yr), respectively, in the Shanyutan marsh in the Minjiang River estuary, the southeast of China. The average CH 4 fluxes during the experiment in the C. malaccensis and S. alterniflora plots without N addition were 3.67 mg CH 4 /(m 2 ·h) and 7.79 mg CH 4 /(m 2 ·h), respectively, suggesting that the invasion of S. alterniflora into the Minjiang River estuary stimulated CH 4 emission.Exogenous N had positive effects on CH 4 fluxes both in native and in invaded tidal marsh. The mean CH 4 fluxes of N1 and N2 treatments increased by 31.05% and 123.50% in the C. malaccensis marsh, and 63.88% and 7.55% in the S. alterniflora marsh, respectively, compared to that of N0 treatment. The CH 4 fluxes in the two marshes were positively correlated with temperature and pH, and negatively correlated with electrical conductivity and redox potential (Eh) at different N addition treatments. While the relationships between CH 4 fluxes and environmental variables (especially soil temperature, pH and Eh at different depths) tended to decrease with N additions. Significant temporal variability in CH 4 fluxes were observed as the N was gradually added to the native and invaded marshes. In order to better assess the global climatic role of tidal marshes as affected by N addition, much more attention should be paid to the short-term temporal variability in CH 4 emission.

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Section: Effects Of S Alterniflora Invasion and Exogenous N Additionsupporting

confidence: 83%

Section: Effects Of S Alterniflora Invasion and Exogenous N Additionmentioning

confidence: 99%

Section: Effects Of S Alterniflora Invasion and Exogenous N Additionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China

et al. 2014

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“…In a mesocosm experiment, Zhang et al (2010) observed that invasive S. alterniflora significantly enhanced CH 4 emissions as compared to native Suaeda salsa, suggesting the negative effect of biological invasion on climate change. The enhanced methane production can be mainly attributed to the higher plant biomass of S. alterniflora as compared to S. salsa that in turn provided CH 4 producers with an increased amount of substrates.…”

Section: Annual Ghg Fluxes and Comparison With Other Studiesmentioning

confidence: 95%

Temporal and spatial variations of greenhouse gas fluxes from a tidal mangrove wetland in Southeast China

Wang

Liao

Dsouza

et al. 2015

Environ Sci Pollut Res

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Tidal mangrove wetlands are a source of methane (CH4) and nitrous oxide (N2O); but considering the high productivity of mangroves, they represent a significant sink for carbon dioxide (CO2). An exotic plant Spartina alterniflora has invaded east China over the last few decades, threatening these coastal mangrove ecosystems. However, the atmospheric gas fluxes in mangroves are poorly characterized and the impact of biological invasion on greenhouse gas (GHG) fluxes in the wetland remains unclear. In this study, the temporal and spatial dynamics of key GHG fluxes (CO2, CH4, and N2O) at an unvegetated mudflat, cordgrass (S. alterniflora), and mangrove (Kandelia obovata) sites along an estuary of the Jiulong River in Southeast China were investigated over a 2-year period. The CO2 and CH4 fluxes demonstrated a seasonal and vegetation-dependent variation while N2O fluxes showed no such dependent pattern. Air temperature was the main factor influencing CO2 and CH4 fluxes. Cumulative global warming potential (GWP) ranked in the order of mangrove > cordgrass > mudflat and summer > spring > autumn > winter. Moreover, CH4 accounted for the largest proportion (68%) of GWP, indicating its dominant contribution to the warming potential in mangroves. Notwithstanding the lack of information on plant coverage, cordgrass invasion exhibited a minor influence on GHG emissions. These findings support the notion that mangrove forests are net accumulation sites for GHGs. As vegetation showed considerable effects on fluxes, more information about the significance of vegetation type with a special emphasis on the effects of invasive plants is crucial.

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Spartina alterniflora Invasion Alters Carbon Exchange and Soil Organic Carbon in Eastern Salt Marsh of China

Zhou

Yin

et al. 2014

CLEAN Soil Air Water

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We investigated carbon (C) fluxes from Spartina alterniflora community comparing with native C 3 -plant (Suaeda salsa and Phragmites australis) communities as well as mudflat in a coastal marsh in eastern China by determining the net ecosystem exchange (NEE), ecosystem respiration (R ECO ) and soil respiration (R SOIL ) monthly with static chambers over one year. Plant biological traits and soil organic carbon (SOC) were measured at the end of the growing season. Gross primary production (GPP) was calculated as the sum of R ECO and NEE, while the respiration of aboveground plant (R AG ) was assessed by the difference between R ECO and R SOIL . The invasion of S. alterniflora significantly increased R ECO , GPP, and R AG in salt marsh. The NEE in the S. alterniflora community was significantly lower than in mudflat and S. salsa community (p < 0.05), but was comparable to that in P. australis community (p > 0.05). R SOIL among sites with different communities did not show significant variations (p > 0.05). Surface water inhibited R SOIL and made it insensitive to changes in environmental factors across communities. Relative to other communities, the lower shoot-root ratio of S. alterniflora community together with its higher R ECO and R AG determined a higher proportion of C allocated in belowground, which ultimately resulted in increment of SOC as well as increased GPP. The invasion of S. alterniflora potentially induces a negative feedback to the global climate change by regulating the C sequestration in salt marsh ecosystems.

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Response of methane emission to invasion of Spartina alterniflora and exogenous N deposition in the coastal salt marsh

Cited by 58 publications

References 41 publications

Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China

Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China

Temporal and spatial variations of greenhouse gas fluxes from a tidal mangrove wetland in Southeast China

Spartina alterniflora Invasion Alters Carbon Exchange and Soil Organic Carbon in Eastern Salt Marsh of China

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