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Environmental Controls on Net Ecosystem CO2 Exchange Over a Reed (Phragmites australis) Wetland in the Yellow River Delta, China

文献类型：期刊论文

作者Han, Guangxuan1; Yang, Liqiong1,2; Yu, Junbao1; Wang, Guangmei1; Mao, Peili1; Gao, Yongjun3
刊名ESTUARIES AND COASTS
出版日期2013-03-01
卷号36期号:2页码:401-413
关键词Net Ecosystem Co2 Exchange Eddy Covariance Coastal Wetlands Environmental Control Yellow River Delta
ISSN号1559-2723
产权排序[Han, Guangxuan; Yang, Liqiong; Yu, Junbao; Wang, Guangmei; Mao, Peili] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China; [Yang, Liqiong] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China; [Gao, Yongjun] Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77204 USA
通讯作者Yu, JB (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, Chunhui Rd 17, Yantai 264003, Shandong, Peoples R China. jbyu@yic.ac.cn
文献子类Article
英文摘要Using the Eddy Covariance (EC) technique, we analyzed temporal variation in net ecosystem CO2 exchange (NEE) and determined the effects of environmental factors on the balance between ecosystem photosynthesis and respiration in a reed (Phragmites australis) wetland in the Yellow River Delta, China. Our results indicated that diurnal and seasonal patterns of NEE and its components (ecosystem respiration (R (eco)), gross primary production (GPP)) varied markedly among months for the growing season (May to October). The cumulative CO2 emission was 1,657 g CO2 m(-2), while 2,612 g CO2 m(-2) was approximately accumulated as GPP, which resulted in the reed wetland being a net sink of 956 g CO2 m(-2). The ratio of R (eco) to GPP in reed wetland was 0.68, which was close to other temperate wetlands. Soil temperature and soil moisture exerted the primary controls on R (eco) during the growing season. Daytime NEE values during the growing season were strongly correlated with photosynthetically active radiation. Aboveground biomass showed significant linear relationships with 24-h average NEE, daytime GPP, and R (eco), respectively. Thus, we conclude that the coastal wetland acted as a carbon sink during the growing season despite the variations in environmental conditions, and long-term flux measurements over these ecosystems are undoubtedly necessary.; Using the Eddy Covariance (EC) technique, we analyzed temporal variation in net ecosystem CO2 exchange (NEE) and determined the effects of environmental factors on the balance between ecosystem photosynthesis and respiration in a reed (Phragmites australis) wetland in the Yellow River Delta, China. Our results indicated that diurnal and seasonal patterns of NEE and its components (ecosystem respiration (R (eco)), gross primary production (GPP)) varied markedly among months for the growing season (May to October). The cumulative CO2 emission was 1,657 g CO2 m(-2), while 2,612 g CO2 m(-2) was approximately accumulated as GPP, which resulted in the reed wetland being a net sink of 956 g CO2 m(-2). The ratio of R (eco) to GPP in reed wetland was 0.68, which was close to other temperate wetlands. Soil temperature and soil moisture exerted the primary controls on R (eco) during the growing season. Daytime NEE values during the growing season were strongly correlated with photosynthetically active radiation. Aboveground biomass showed significant linear relationships with 24-h average NEE, daytime GPP, and R (eco), respectively. Thus, we conclude that the coastal wetland acted as a carbon sink during the growing season despite the variations in environmental conditions, and long-term flux measurements over these ecosystems are undoubtedly necessary.
学科主题Environmental Sciences ; Marine & Freshwater Biology
URL标识查看原文
WOS关键词CARBON-DIOXIDE EXCHANGE ; QINGHAI-TIBETAN PLATEAU ; SOIL RESPIRATION ; SEASONAL-VARIATION ; EDDY COVARIANCE ; FLUX MEASUREMENTS ; PLANT BIOMASS ; TEMPERATURE ; MARSH ; WATER
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种英语
WOS记录号WOS:000316015000013
资助机构National Science and Technology Support Program of China [2011BAC02B01]; Chinese Academy of Sciences [kzcx2-yw-223]; CAS/SAFEA International Partnership Program for Creative Research Teams (Representative environmental processes and resources effects in coastal zone); Chinese Academy of Sciences
公开日期2013-08-15
源URL[http://ir.yic.ac.cn/handle/133337/6613]  
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, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77204 USA
推荐引用方式
GB/T 7714		 Han, Guangxuan,Yang, Liqiong,Yu, Junbao,et al. Environmental Controls on Net Ecosystem CO2 Exchange Over a Reed (Phragmites australis) Wetland in the Yellow River Delta, China[J]. ESTUARIES AND COASTS,2013,36(2):401-413.
APA Han, Guangxuan,Yang, Liqiong,Yu, Junbao,Wang, Guangmei,Mao, Peili,&Gao, Yongjun.(2013).Environmental Controls on Net Ecosystem CO2 Exchange Over a Reed (Phragmites australis) Wetland in the Yellow River Delta, China.ESTUARIES AND COASTS,36(2),401-413.
MLA Han, Guangxuan,et al."Environmental Controls on Net Ecosystem CO2 Exchange Over a Reed (Phragmites australis) Wetland in the Yellow River Delta, China".ESTUARIES AND COASTS 36.2(2013):401-413.

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来源：烟台海岸带研究所

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