Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Environmental Controls on Net Ecosystem CO2 Exchange Over a Reed (Phragmites australis) Wetland in the Yellow River Delta, China | |
Han, Guangxuan1 ; Yang, Liqiong1,2; Yu, Junbao1; Wang, Guangmei1; Mao, Peili1; Gao, Yongjun3
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| 发表期刊 | ESTUARIES AND COASTS
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| ISSN | 1559-2723 |
| 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 |
| 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. [email protected] |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 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. |
| 文章类型 | Article |
| 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | CARBON-DIOXIDE EXCHANGE ; QINGHAI-TIBETAN PLATEAU ; SOIL RESPIRATION ; SEASONAL-VARIATION ; EDDY COVARIANCE ; FLUX MEASUREMENTS ; PLANT BIOMASS ; TEMPERATURE ; MARSH ; WATER |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| WOS记录号 | WOS:000316015000013 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/6612 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 中国科学院海岸带环境过程与生态修复重点实验室_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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