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

doi:10.1007/s11738-018-2732-6

	The relationship between leaf and ecosystem CO2 exchanges in a maize field
	Xu, Zhenzhu; Zhou, Guangsheng 1; Han, Guangxuan 2; Li, Yijun 3
	2018
发表期刊	ACTA PHYSIOLOGIAE PLANTARUM
ISSN	0137-5881
卷号	40 期号:8
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.
关键词	Eddy covariance Leaf photosynthetic rate Canopy Net CO2 ecosystem exchange Photosynthetic quantum yield Photosystem II photochemistry Upscaling
学科领域	Plant Sciences
DOI	10.1007/s11738-018-2732-6
收录类别	SCI
语种	英语
WOS关键词	CARBON-DIOXIDE EXCHANGE ; EDDY COVARIANCE MEASUREMENTS ; LIGHT RESPONSE CURVE ; ZEA-MAYS L ; GAS-EXCHANGE ; CHLOROPHYLL FLUORESCENCE ; USE EFFICIENCY ; WATER-VAPOR ; PHOTOSYNTHETIC ACCLIMATION ; CANOPY PHOTOSYNTHESIS
WOS记录号	WOS:000440491000002
出版者	SPRINGER HEIDELBERG
文献子类	Article
出版地	HEIDELBERG
EISSN	1861-1664
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41330531] ; China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3, GYHY201506019]
作者邮箱	xuzz@ibcas.ac.cn ; gszhou@ibcas.ac.cn
作品OA属性	Green Published
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/20370
专题	植被与环境变化国家重点实验室
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 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).
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).
MLA	Xu, Zhenzhu,et al."The relationship between leaf and ecosystem CO2 exchanges in a maize field".ACTA PHYSIOLOGIAE PLANTARUM 40.8(2018).

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