干旱区生态环境知识资源中心(Arid): Shifts in plant resource use strategies across climate and soil gradients in dryland steppe communities

Arid

DOI	10.1007/s11104-023-06401-z
	Shifts in plant resource use strategies across climate and soil gradients in dryland steppe communities
	Fan, Baoli; Westerband, Andrea C.; Wright, Ian J.; Gao, Pengfei; Ding, Nana; Ai, Dongxia; Tian, Tingting; Zhao, Xiang; Sun, Kun
通讯作者	Fan, BL
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2024
卷号	497 期号:1-2 页码:277-296
英文摘要	Background and aims Despite being Earth's largest biome and a key contributor to global energy budgets, arid regions (or drylands) are critically understudied relative to mesic ecosystems. Here we clarify how dryland species vary in their functional traits across environmental gradients.Methods We measured nine traits reflecting resource use for 68 species inhabiting dryland steppe communities across northwestern China. We tested predictions from various theoretical frameworks including the leaf economics spectrum, leaf energy balance theory and least-cost optimality theory.Results Species on drier or sunnier sites had smaller leaves with higher LMA, higher leaf nitrogen concentration per area (Narea), and a greater drawdown of CO2 during photosynthesis (i.e., lower Ci:Ca) suggesting higher photosynthetic water use efficiency. Leaf nitrogen per mass and plant height (typically < 1.4 m for all species) did not vary with climate or with soil properties. Trait-trait relationships showed little patterning in relation to climate or soil. Traits of forbs were more strongly influenced by environmental properties than those of the shrubs, trees, or grasses sampled.Conclusion We investigated variation in plant traits that influence carbon economy, water use and competitive interactions, and found that in dry and low fertility environments, dryland steppe species exhibited a mixture of resource acquisitive (e.g. high Narea) and conservative leaf traits (e.g. high LMA). Our results demonstrate the utility of applying multiple theoretical frameworks to better understand variation in resource use strategies among co-occurring species.
英文关键词	Adaptive coordination Carbon economy Drylands Leaf economics spectrum Least-cost optimality theory Plant-climate interactions Resource use strategies
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001121915600001
WOS关键词	CARBON-ISOTOPE DISCRIMINATION ; DROUGHT RESISTANCE ; LEAF TRAITS ; WATER ; NUTRIENT ; ARIDITY ; FOREST ; PRECIPITATION ; CONVERGENCE ; ECOSYSTEMS
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405081
推荐引用方式 GB/T 7714	Fan, Baoli,Westerband, Andrea C.,Wright, Ian J.,et al. Shifts in plant resource use strategies across climate and soil gradients in dryland steppe communities[J],2024,497(1-2):277-296.
APA	Fan, Baoli.,Westerband, Andrea C..,Wright, Ian J..,Gao, Pengfei.,Ding, Nana.,...&Sun, Kun.(2024).Shifts in plant resource use strategies across climate and soil gradients in dryland steppe communities.PLANT AND SOIL,497(1-2),277-296.
MLA	Fan, Baoli,et al."Shifts in plant resource use strategies across climate and soil gradients in dryland steppe communities".PLANT AND SOIL 497.1-2(2024):277-296.