Xu, Zhenzhu; Zhou, Guangsheng; Han, Guangxuan
; Li, Yijun发表期刊ACTA PHYSIOLOGIAE PLANTARUM
ISSN0137-5881
2018-08
卷号40期号:8页码:156
关键词Eddy covarianceLeaf photosynthetic rateCanopyNet CO2 ecosystem exchangePhotosynthetic quantum yieldPhotosystem II photochemistryUpscaling
研究领域Plant Sciences
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
作者部门海岸带环境过程实验室
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.
文章类型Article
资助机构National Natural Science Foundation of China [41330531]; China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3, GYHY201506019]
收录类别SCI
语种英语
关键词[WOS]CARBON-DIOXIDE EXCHANGE; ZEA-MAYS L; EDDY COVARIANCE MEASUREMENTS; LIGHT RESPONSE CURVE; GAS-EXCHANGE; CHLOROPHYLL FLUORESCENCE; CANOPY PHOTOSYNTHESIS; CHAMBER MEASUREMENTS; USE EFFICIENCY; WINTER-WHEAT
研究领域[WOS]Plant Sciences
WOS记录号WOS:000440491000002
引用统计被引频次：3[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24427
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
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.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China;
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China;
4.Natl Meteorol Ctr China, Beijing, Peoples R China
推荐引用方式
GB/T 7714Xu, 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.
APAXu, 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.
MLAXu, Zhenzhu,et al."The relationship between leaf and ecosystem CO2 exchanges in a maize field".ACTA PHYSIOLOGIAE PLANTARUM 40.8(2018):156.
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