Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Ecosystem photosynthesis regulates soil respiration on a diurnal scale with a short-term time lag in a coastal wetland | |
Han, Guangxuan1 ; Luo, Yiqi2; Li, Dejun2; Xia, Jianyang2; Xing, Qinghui1; Yu, Junbao1
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| 发表期刊 | SOIL BIOLOGY & BIOCHEMISTRY
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| ISSN | 0038-0717 |
| 2014 | |
| 卷号 | 68页码:85-94 |
| 关键词 | Soil Respiration Ecosystem Photosynthesis Eddy Covariance Sunny And Cloudy Days Coastal Wetland Yellow River Delta |
| 产权排序 | [Han, Guangxuan; Xing, Qinghui; Yu, Junbao] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Luo, Yiqi; Li, Dejun; Xia, Jianyang] Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA |
| 通讯作者 | Yu, JB (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China. gxhan@yic.ac.cn ; jbyu@yic.ac.cn |
| 英文摘要 | Although increasing evidence has provided that soil respiration is strongly related to recent canopy photosynthesis, doubts remain as to the extent to which primary productivity controls soil respiratory and the speed of the link between soil respiration and photosynthesis. Based on the automated measurements of soil respiration and eddy covariance measurements of ecosystem photosynthesis (i.e. gross primary production, GPP) in a coastal wetland, we assessed the speed of link between ecosystem photosynthesis and soil respiration on the diurnal scale, and quantified the control of the ecosystem primary production on diurnal soil respiration. On the diurnal scale, the time of daily peak soil respiration lagged GPP but preceded soil temperature on both sunny and cloudy days. Daytime soil respiration was significantly linearly correlated with GPP with a lag of 1.5 h on sunny days and 1 h on cloudy days, respectively. By taking advantage of the natural shift of sunny and cloudy days without disturbance to the plant-soil system, our results also indicated that the changes in soil temperature and GPP together explained 53% of the changes in daytime soil respiration rates between sunny days and adjacent cloudy days. Under the same soil temperature, changes in soil respiration rates were strongly correlated with changes in GPP between sunny days and adjacent cloudy days. We therefore conclude that recent canopy photosynthesis regulates soil respiration on a diurnal scale with a short-term time lag. Thus, it is necessary to take into account the influence of photosynthesis on soil respiration in order to accurately simulate the magnitude and variation of soil respiration, especially at short and medium temporal scales. (C) 2013 Elsevier Ltd. All rights reserved.; Although increasing evidence has provided that soil respiration is strongly related to recent canopy photosynthesis, doubts remain as to the extent to which primary productivity controls soil respiratory and the speed of the link between soil respiration and photosynthesis. Based on the automated measurements of soil respiration and eddy covariance measurements of ecosystem photosynthesis (i.e. gross primary production, GPP) in a coastal wetland, we assessed the speed of link between ecosystem photosynthesis and soil respiration on the diurnal scale, and quantified the control of the ecosystem primary production on diurnal soil respiration. On the diurnal scale, the time of daily peak soil respiration lagged GPP but preceded soil temperature on both sunny and cloudy days. Daytime soil respiration was significantly linearly correlated with GPP with a lag of 1.5 h on sunny days and 1 h on cloudy days, respectively. By taking advantage of the natural shift of sunny and cloudy days without disturbance to the plant-soil system, our results also indicated that the changes in soil temperature and GPP together explained 53% of the changes in daytime soil respiration rates between sunny days and adjacent cloudy days. Under the same soil temperature, changes in soil respiration rates were strongly correlated with changes in GPP between sunny days and adjacent cloudy days. We therefore conclude that recent canopy photosynthesis regulates soil respiration on a diurnal scale with a short-term time lag. Thus, it is necessary to take into account the influence of photosynthesis on soil respiration in order to accurately simulate the magnitude and variation of soil respiration, especially at short and medium temporal scales. (C) 2013 Elsevier Ltd. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China [41301083]; National Science and Technology Support Program of China [2011BAC02B01]; Chinese Academy of Sciences [KZCX2-YW-223] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | YELLOW-RIVER DELTA ; PHRAGMITES-AUSTRALIS ; RHIZOSPHERE RESPIRATION ; ENVIRONMENTAL CONTROLS ; TREE PHOTOSYNTHESIS ; ROOT RESPIRATION ; CO2 EFFLUX ; CARBON ; FOREST ; TEMPERATURE |
| 研究领域[WOS] | Agriculture |
| WOS记录号 | WOS:000329536200012 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/6917 |
| 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 & Ecol Remediat, Yantai 264003, Shandong, Peoples R China 2.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA |
| 推荐引用方式 GB/T 7714 | Han, Guangxuan,Luo, Yiqi,Li, Dejun,et al. Ecosystem photosynthesis regulates soil respiration on a diurnal scale with a short-term time lag in a coastal wetland[J]. SOIL BIOLOGY & BIOCHEMISTRY,2014,68:85-94. |
| APA | Han, Guangxuan,Luo, Yiqi,Li, Dejun,Xia, Jianyang,Xing, Qinghui,&Yu, Junbao.(2014).Ecosystem photosynthesis regulates soil respiration on a diurnal scale with a short-term time lag in a coastal wetland.SOIL BIOLOGY & BIOCHEMISTRY,68,85-94. |
| MLA | Han, Guangxuan,et al."Ecosystem photosynthesis regulates soil respiration on a diurnal scale with a short-term time lag in a coastal wetland".SOIL BIOLOGY & BIOCHEMISTRY 68(2014):85-94. |
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