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

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China
	Mou Xiaojie 1; Liu Xingtu 1,2; Tong Chuan 2; Sun Zhigao3
刊名	CHINESE GEOGRAPHICAL SCIENCE
	2014-10-01
卷号	24 期号:5 页码:562-574
关键词	nitrogen addition CH4 emission tidal marsh Spartina alterniflora invasion temporal variability
ISSN号	1002-0063
通讯作者	Liu, XT (reprint author), Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China. lxtmxh@163.com
产权排序	[Mou Xiaojie; Liu Xingtu] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China; [Liu Xingtu; Tong Chuan] Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Ctr Wetlands Subtrop Reg, Minist Educ, Fuzhou 350007, Peoples R China; [Sun Zhigao] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, Beijing 264003, Yantai, Peoples R China
中文摘要	The nitrogen (N) input and Spartina alterniflora invasion in the tidal marsh of the southeast of China are increasingly serious. To evaluate CH4 emissions in the tidal marsh as affected by the N inputs and S. alterniflora invasion, we measured CH4 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)center dot yr), respectively, in the Shanyutan marsh in the Minjiang River estuary, the southeast of China. The average CH4 fluxes during the experiment in the C. malaccensis and S. alterniflora plots without N addition were 3.67 mg CH4/(m(2)center dot h) and 7.79 mg CH4/(m(2)center dot h), respectively, suggesting that the invasion of S. alterniflora into the Minjiang River estuary stimulated CH4 emission. Exogenous N had positive effects on CH4 fluxes both in native and in invaded tidal marsh. The mean CH4 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 CH4 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 CH4 fluxes and environmental variables (especially soil temperature, pH and Eh at different depths) tended to decrease with N additions. Significant temporal variability in CH4 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 CH4 emission.
英文摘要	The nitrogen (N) input and Spartina alterniflora invasion in the tidal marsh of the southeast of China are increasingly serious. To evaluate CH4 emissions in the tidal marsh as affected by the N inputs and S. alterniflora invasion, we measured CH4 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)center dot yr), respectively, in the Shanyutan marsh in the Minjiang River estuary, the southeast of China. The average CH4 fluxes during the experiment in the C. malaccensis and S. alterniflora plots without N addition were 3.67 mg CH4/(m(2)center dot h) and 7.79 mg CH4/(m(2)center dot h), respectively, suggesting that the invasion of S. alterniflora into the Minjiang River estuary stimulated CH4 emission. Exogenous N had positive effects on CH4 fluxes both in native and in invaded tidal marsh. The mean CH4 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 CH4 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 CH4 fluxes and environmental variables (especially soil temperature, pH and Eh at different depths) tended to decrease with N additions. Significant temporal variability in CH4 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 CH4 emission.
学科主题	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	FRESH-WATER MARSHES ; COASTAL SALT-MARSH ; METHANE EMISSIONS ; CARBON MINERALIZATION ; EXOGENOUS-N ; N2O ; CO2 ; DEPOSITION ; PEATLANDS ; WETLANDS
收录类别	SCI
语种	英语
WOS记录号	WOS:000342218300006
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/8704]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室烟台海岸带研究所_滨海湿地实验室
作者单位	1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China 2.Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Ctr Wetlands Subtrop Reg, Minist Educ, Fuzhou 350007, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, Beijing 264003, Yantai, Peoples R China
推荐引用方式 GB/T 7714	Mou Xiaojie,Liu Xingtu,Tong Chuan,et al. Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China[J]. CHINESE GEOGRAPHICAL SCIENCE,2014,24(5):562-574.
APA	Mou Xiaojie,Liu Xingtu,Tong Chuan,&Sun Zhigao.(2014).Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China.CHINESE GEOGRAPHICAL SCIENCE,24(5),562-574.
MLA	Mou Xiaojie,et al."Responses of CH4 emissions to nitrogen addition and Spartina alterniflora invasion in Minjiang River estuary, southeast of China".CHINESE GEOGRAPHICAL SCIENCE 24.5(2014):562-574.