中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 烟台海岸带研究所
  3. 中国科学院烟台海岸带研究所
  4. 中科院海岸带环境过程与生态修复重点实验室
Ecosystem photosynthesis regulates soil respiration on a diurnal scale with a short-term time lag in a coastal wetland

文献类型：期刊论文

作者Han, Guangxuan1; Luo, Yiqi2; Li, Dejun2; Xia, Jianyang2; Xing, Qinghui1; Yu, Junbao1
刊名SOIL BIOLOGY & BIOCHEMISTRY
出版日期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
ISSN号0038-0717
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
中文摘要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.
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.
学科主题Soil Science
研究领域[WOS]Agriculture
关键词[WOS]YELLOW-RIVER DELTA ; PHRAGMITES-AUSTRALIS ; RHIZOSPHERE RESPIRATION ; ENVIRONMENTAL CONTROLS ; TREE PHOTOSYNTHESIS ; ROOT RESPIRATION ; CO2 EFFLUX ; CARBON ; FOREST ; TEMPERATURE
收录类别SCI
资助信息National Natural Science Foundation of China [41301083]; National Science and Technology Support Program of China [2011BAC02B01]; Chinese Academy of Sciences [KZCX2-YW-223]
原文出处http://dx.doi.org/10.1016/j.soilbio.2013.09.024
语种英语
WOS记录号WOS:000329536200012
公开日期2014-07-08
源URL[http://ir.yic.ac.cn/handle/133337/6917]  
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 & 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.

入库方式： OAI收割

来源：烟台海岸带研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。