干旱区生态环境知识资源中心(Arid): High photosynthetic capacity of Sahelian C-3 and C-4 plants

Arid

DOI	10.1007/s11120-020-00801-3
	High photosynthetic capacity of Sahelian C-3 and C-4 plants
	Sibret, Thomas; Verbruggen, Wim; Peaucelle, Marc; Verryckt, Lore T.; Bauters, Marijn; Combe, Marie; Boeckx, Pascal; Verbeeck, Hans
通讯作者	Sibret, T (corresponding author), Univ Ghent, Dept Green Chem & Technol, Isotope Biosci Lab ISOFYS, Ghent, Belgium. ; Sibret, T (corresponding author), Univ Ghent, CAVElab, Computat & Appl Vegetat Ecol, Dept Environm, Ghent, Belgium.
来源期刊	PHOTOSYNTHESIS RESEARCH
ISSN	0166-8595
EISSN	1573-5079
出版年	2021
卷号	147 期号:2 页码:161-175
英文摘要	The semi-arid ecosystems of the African Sahel play an important role in the global carbon cycle and are among the most sensitive ecosystems to future environmental pressures. Still, basic data of photosynthetic characteristics of Sahelian vegetation are very limited, preventing us to properly understand these ecosystems and to project their response to future global changes. Here, we aim to study and quantify key leaf traits, including photosynthetic parameters and leaf nutrients (N-leaf and P-leaf), of common C-3 and C-4 Sahelian plants (trees, lianas, and grasses) at the Dahra field site (Senegal). Dahra is a reference site for grazed semi-arid Sahelian savannah ecosystems in carbon cycle studies. Within the studied species, we found that photosynthetic parameters varied considerably between functional types. We also found significant relationships between and within photosynthetic parameters and leaf traits which mostly differed in their slopes from C-3 to C-4 plants. In agreement with the leaf economic spectrum, strong relationships (R-2 = 0.71) were found between SLA and N-leaf whereby C-3 and C-4 plants showed very similar relationships. By comparing our data to a global dataset of plant traits, we show that measured Sahelian plants exhibit higher photosynthetic capacity (A(sat)) compared to the non-Sahelian vegetation, with values that are on average a fourfold of the global average. Moreover, Sahelian C-3 plants showed photosynthetic nutrient use efficiencies that were on average roughly twice as high as global averages. We interpreted these results as the potential adaptation of Sahelian plants to short growing season lengths via an efficient nutrient allocation to optimize photosynthesis during this period. Our study provides robust estimates of key functional traits, but also traits relationships that will help to calibrate and validate vegetation models over this data-poor region.
英文关键词	Photosynthesis Plant functional trait Leaf nutrient Specific leaf area C-3 plants C-4 plants Drylands Sahel
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000604214700005
WOS关键词	VEGETATION PRODUCTIVITY ; ECOSYSTEM PROPERTIES ; SEMIARID ECOSYSTEMS ; FOREST LANDSCAPE ; C-13/C-12 RATIOS ; CARBON BALANCE ; LEAF NITROGEN ; WEST-AFRICA ; ASSIMILATION ; VARIABILITY
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348092
作者单位	[Sibret, Thomas; Bauters, Marijn; Boeckx, Pascal] Univ Ghent, Dept Green Chem & Technol, Isotope Biosci Lab ISOFYS, Ghent, Belgium; [Sibret, Thomas; Verbruggen, Wim; Peaucelle, Marc; Bauters, Marijn; Combe, Marie; Verbeeck, Hans] Univ Ghent, CAVElab, Computat & Appl Vegetat Ecol, Dept Environm, Ghent, Belgium; [Verryckt, Lore T.] Univ Antwerp, Dept Biol, PLECO, Antwerp, Belgium
推荐引用方式 GB/T 7714	Sibret, Thomas,Verbruggen, Wim,Peaucelle, Marc,et al. High photosynthetic capacity of Sahelian C-3 and C-4 plants[J],2021,147(2):161-175.
APA	Sibret, Thomas.,Verbruggen, Wim.,Peaucelle, Marc.,Verryckt, Lore T..,Bauters, Marijn.,...&Verbeeck, Hans.(2021).High photosynthetic capacity of Sahelian C-3 and C-4 plants.PHOTOSYNTHESIS RESEARCH,147(2),161-175.
MLA	Sibret, Thomas,et al."High photosynthetic capacity of Sahelian C-3 and C-4 plants".PHOTOSYNTHESIS RESEARCH 147.2(2021):161-175.