气候变化领域集成服务门户(CCPortal): Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment

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DOI	10.1093/aob/mcab032
	Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment
	Zhang, Dianye; Peng, Yunfeng; Li, Fei; Yang, Guibiao; Wang, Jun; Yu, Jianchun; Zhou, Guoying; Yang, Yuanhe
通讯作者	Yang, YH (通讯作者)，Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China. ; Yang, YH (通讯作者)，Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
发表日期	2021
ISSN	0305-7364
EISSN	1095-8290
起始页码	31
结束页码	44
卷号	128 期号:1
英文摘要	Background and Aims: Knowledge of plant resource acquisition strategies is crucial for understanding the mechanisms mediating the responses of ecosystems to external nitrogen (N) input. However, few studies have considered the joint effects of above-ground (light) and below-ground (nutrient) resource acquisition strategies in regulating plant species responses to N enrichment. Here, we quantified the effects of light and non-N nutrient acquisition capacities on species relative abundance in the case of extra N input. Methods: Based on an N-manipulation experiment in a Tibetan alpine steppe, we determined the responses of species relative abundances and light and nutrient acquisition capacities to N enrichment for two species with different resource acquisition strategies (the taller Stipa purpurea, which is colonized by arbuscular mycorrhizal fungi, and the shorter Carex stenophylloides, which has cluster roots). Structural equation models were developed to explore the relative effects of light and nutrient acquisition on species relative abundance along the N addition gradient. Key Results: We found that the relative abundance of taller S. purpurea increased with the improved light acquisition along the N addition gradient. In contrast, the shorter C. stenophylloides, with cluster roots, excelled in acquiring phosphorus (P) so as to elevate its leaf P concentration under N enrichment by producing large amounts of carboxylate exudates that mobilized moderately labile and recalcitrant soil P forms. The increased leaf P concentration of C. stenophylloides enhanced its light use efficiency and promoted its relative abundance even in the shade of taller competitors. Conclusions: Our findings highlight that the combined effects of above-ground (light) and below-ground (nutrient) resources rather than light alone (the prevailing perspective) determine the responses of grassland community structure to N enrichment.
关键词	LIGHT INTERCEPTION BIODIVERSITY LOSS PHOSPHORUS GRASSLAND SOIL DIVERSITY RHIZOSPHERE COEXISTENCE FRACTIONS NUTRIENTS
英文关键词	Nitrogen enrichment; light acquisition; phosphorus acquisition; cluster root; root exudation; community structure
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000734192000005
来源期刊	ANNALS OF BOTANY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254709
作者单位	[Zhang, Dianye; Peng, Yunfeng; Li, Fei; Yang, Guibiao; Wang, Jun; Yu, Jianchun; Yang, Yuanhe] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China; [Zhang, Dianye; Li, Fei; Yang, Guibiao; Wang, Jun; Yu, Jianchun; Yang, Yuanhe] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Zhou, Guoying] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Dianye,Peng, Yunfeng,Li, Fei,et al. Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment[J]. 中国科学院西北生态环境资源研究院,2021,128(1).
APA	Zhang, Dianye.,Peng, Yunfeng.,Li, Fei.,Yang, Guibiao.,Wang, Jun.,...&Yang, Yuanhe.(2021).Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment.ANNALS OF BOTANY,128(1).
MLA	Zhang, Dianye,et al."Above- and below-ground resource acquisition strategies determine plant species responses to nitrogen enrichment".ANNALS OF BOTANY 128.1(2021).