气候变化领域集成服务门户(CCPortal): Climatic resources mediate the shape and strength of grassland productivity-richness relationships from local to regional scales

CCPortal

DOI	10.1016/j.agee.2022.107888
	Climatic resources mediate the shape and strength of grassland productivity-richness relationships from local to regional scales
	Du, Jianqing; Wang, Yanfen; Hao, Yanbin; Eisenhauer, Nico; Liu, Yali; Zhang, Nan; Xue, Kai; Cui, Xiaoyong; Xu, Xingliang; Bardgett, Richard D.; Wang, Shiping
通讯作者	Wang, YF (通讯作者)
发表日期	2022
ISSN	0167-8809
EISSN	1873-2305
卷号	330
英文摘要	The plant productivity and species richness (P-SR) relationship has been a central topic in ecology for decades. It is increasingly recognized that climate resources (CR, temperature and precipitation) might affect the P-SR relationship as (1) the response of plant productivity and species richness to CR are different; (2) plant-plant interactions change along the CR gradient. However, little is known about how these effects mediate the shape and strength of the P-SR relationship from local-site to regional scales. Here, we proposed a cross-scale framework to disentangle the climatic control over the P-SR relationship in grasslands using the HerbDivNet dataset, which covers 28 natural grasslands in 19 countries and 6 continents with wide precipitation and tem-perature gradients. Our results showed that, at the local-site scale, a humped-back P-SR relationship is common at sites under poor and rich CR conditions, whereas both the shape and strength of the P-SR relationship strongly vary among sites under moderate CR condition. However, at the regional scale, the humped-back P-SR rela-tionship is only observed under poor CR condition. We suggested that the asynchronous responses of productivity and species richness to increasing CR is an abiotic driver of the inconsistent P-SR relationships along the climatic gradient in addition to the changing plant-plant interactions suggested by the stress-gradient hypothesis. These findings help to reconcile the long-standing debate over the P-SR relationship and highlight the importance of CR conditions in developing or comparing grassland ecosystem theories and management at small scales.
关键词	STRESS-GRADIENT HYPOTHESIS SPECIES RICHNESS BIODIVERSITY FACILITATION TEMPERATURE DIVERSITY PATTERNS CARBON SENSITIVITY COMPETITION
英文关键词	Productivity; Species richness; Productivity-richness relationship; Climatic resource; Plant strategies; Grassland
语种	英语
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS记录号	WOS:000804737000003
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260727
推荐引用方式 GB/T 7714	Du, Jianqing,Wang, Yanfen,Hao, Yanbin,et al. Climatic resources mediate the shape and strength of grassland productivity-richness relationships from local to regional scales[J]. 中国科学院青藏高原研究所,2022,330.
APA	Du, Jianqing.,Wang, Yanfen.,Hao, Yanbin.,Eisenhauer, Nico.,Liu, Yali.,...&Wang, Shiping.(2022).Climatic resources mediate the shape and strength of grassland productivity-richness relationships from local to regional scales.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,330.
MLA	Du, Jianqing,et al."Climatic resources mediate the shape and strength of grassland productivity-richness relationships from local to regional scales".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 330(2022).