DOI: 10.1111/gcb.12797
论文题名: Exotic Spartina alterniflora invasion alters ecosystem-atmosphere exchange of CH4 and N2O and carbon sequestration in a coastal salt marsh in China
作者: Yuan J. ; Ding W. ; Liu D. ; Kang H. ; Freeman C. ; Xiang J. ; Lin Y.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 4 起始页码: 1567
结束页码: 1580
语种: 英语
英文关键词: GWP
; Atmospheric N2O consumption
; Carbon sequestration
; N-limit
; Spartina alterniflora invasion
; Sulfate
Scopus关键词: atmosphere-biosphere interaction
; biological invasion
; carbon sequestration
; coastal wetland
; global warming
; grass
; methane
; nitrous oxide
; saltmarsh
; sulfate
; China
; Jiangsu
; Phragmites australis
; Spartina alterniflora
; Suaeda salsa
; air pollutant
; carbon
; methane
; nitrous oxide
; soil
; air pollutant
; analysis
; carbon sequestration
; chemistry
; China
; introduced species
; physiology
; Poaceae
; season
; soil
; wetland
; Air Pollutants
; Carbon
; Carbon Sequestration
; China
; Introduced Species
; Methane
; Nitrous Oxide
; Poaceae
; Seasons
; Soil
; Wetlands
英文摘要: Coastal salt marshes are sensitive to global climate change and may play an important role in mitigating global warming. To evaluate the impacts of Spartina alterniflora invasion on global warming potential (GWP) in Chinese coastal areas, we measured CH4 and N2O fluxes and soil organic carbon sequestration rates along a transect of coastal wetlands in Jiangsu province, China, including open water; bare tidal flat; and invasive S. alterniflora, native Suaeda salsa, and Phragmites australis marshes. Annual CH4 emissions were estimated as 2.81, 4.16, 4.88, 10.79, and 16.98 kg CH4 ha-1 for open water, bare tidal flat, and P. australis, S. salsa, and S. alterniflora marshes, respectively, indicating that S. alterniflora invasion increased CH4 emissions by 57-505%. In contrast, negative N2O fluxes were found to be significantly and negatively correlated (P < 0.001) with net ecosystem CO2 exchange during the growing season in S. alterniflora and P. australis marshes. Annual N2O emissions were 0.24, 0.38, and 0.56 kg N2O ha-1 in open water, bare tidal flat and S. salsa marsh, respectively, compared with -0.51 kg N2O ha-1 for S. alterniflora marsh and -0.25 kg N2O ha-1 for P. australis marsh. The carbon sequestration rate of S. alterniflora marsh amounted to 3.16 Mg C ha-1 yr-1 in the top 100 cm soil profile, a value that was 2.63- to 8.78-fold higher than in native plant marshes. The estimated GWP was 1.78, -0.60, -4.09, and -1.14 Mg CO2eq ha-1 yr-1 in open water, bare tidal flat, P. australis marsh and S. salsa marsh, respectively, but dropped to -11.30 Mg CO2eq ha-1 yr-1 in S. alterniflora marsh. Our results indicate that although S. alterniflora invasion stimulates CH4 emissions, it can efficiently mitigate increases in atmospheric CO2 and N2O along the coast of China. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61891
Appears in Collections: 影响、适应和脆弱性
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作者单位: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China; University of Chinese Academy of Sciences, Beijing, China; School of Civil and Environmental Engineering, Yonsei University, Seoul, South Korea; School of Biological Sciences, Bangor University, Gwynedd, United Kingdom
Recommended Citation:
Yuan J.,Ding W.,Liu D.,et al. Exotic Spartina alterniflora invasion alters ecosystem-atmosphere exchange of CH4 and N2O and carbon sequestration in a coastal salt marsh in China[J]. Global Change Biology,2015-01-01,21(4)