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The relationship between leaf and ecosystem CO2 exchanges in a maize field

文献类型：期刊论文

作者Xu, Zhenzhu; Zhou, Guangsheng; Han, Guangxuan; Li, Yijun
刊名ACTA PHYSIOLOGIAE PLANTARUM
出版日期2018-08
卷号40期号:8页码:156
关键词Eddy covariance Leaf photosynthetic rate Canopy Net CO2 ecosystem exchange Photosynthetic quantum yield Photosystem II photochemistry Upscaling
ISSN号0137-5881
DOI10.1007/s11738-018-2732-6
产权排序[Xu, Zhenzhu ; Zhou, Guangsheng ; Han, Guangxuan ; Li, Yijun] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China ; [Zhou, Guangsheng] Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China ; [Han, Guangxuan] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China ; [Li, Yijun] Natl Meteorol Ctr China, Beijing, Peoples R China
文献子类Article
英文摘要The relationship between leaf photosynthetic rate (A) in a vegetation canopy and the net ecosystem CO2 exchange (NEE) over an entire ecosystem is not well understood. The aim of the present study is to assess the coordinated changes in NEE derived with eddy covariance, A measured in leaf cuvette, and their associations in a rainfed maize field. The light response-curves were estimated for the carbon assimilation rate at both the leaf and ecosystem scales. NEE and A synchronically changed throughout the day and were greater around noon and persisted longer during rapid growth periods. The leaf A had a similar pattern of daytime changes in the top, middle, and bottom leaves. Only severe leaf ageing led to a significant decline in the maximum efficiency of photosystem II (PSII) photochemistry. The greater maximum NEE was associated with a higher ecosystem quantum yield. NEE was positively and significantly correlated with the leaf A averaged based on the vertical distribution of leaf area. The finding highlights the feasibility of assessing NEE by leaf CO2 exchange because of most of experimental data obtained with leaf cuvette methods; and also implies that simultaneously enhancing leaf photosynthetic rate, electron transport rate, net carbon assimilation at whole ecosystem might play a critical role for the enhancement of crop productivity.
WOS关键词CARBON-DIOXIDE EXCHANGE ; ZEA-MAYS L ; EDDY COVARIANCE MEASUREMENTS ; LIGHT RESPONSE CURVE ; GAS-EXCHANGE ; CHLOROPHYLL FLUORESCENCE ; CANOPY PHOTOSYNTHESIS ; CHAMBER MEASUREMENTS ; USE EFFICIENCY ; WINTER-WHEAT
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:000440491000002
资助机构National Natural Science Foundation of China [41330531] ; China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3, GYHY201506019]
源URL[http://ir.yic.ac.cn/handle/133337/24427]  
专题烟台海岸带研究所_近岸生态与环境实验室
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
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China;
2.Natl Meteorol Ctr China, Beijing, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China;
4.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China;
推荐引用方式
GB/T 7714		 Xu, Zhenzhu,Zhou, Guangsheng,Han, Guangxuan,et al. The relationship between leaf and ecosystem CO2 exchanges in a maize field[J]. ACTA PHYSIOLOGIAE PLANTARUM,2018,40(8):156.
APA Xu, Zhenzhu,Zhou, Guangsheng,Han, Guangxuan,&Li, Yijun.(2018).The relationship between leaf and ecosystem CO2 exchanges in a maize field.ACTA PHYSIOLOGIAE PLANTARUM,40(8),156.
MLA Xu, Zhenzhu,et al."The relationship between leaf and ecosystem CO2 exchanges in a maize field".ACTA PHYSIOLOGIAE PLANTARUM 40.8(2018):156.

入库方式： OAI收割

来源：烟台海岸带研究所

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