干旱区生态环境知识资源中心(Arid): Species mixing enhances the resistance of Robinia pseudoacacia L. to drought events in semi-arid regions: Evidence from China's Loess Plateau

Arid

DOI	10.1016/j.scitotenv.2023.161796
	Species mixing enhances the resistance of Robinia pseudoacacia L. to drought events in semi-arid regions: Evidence from China's Loess Plateau
	Chen, Meng; Zhang, Xu; Li, Ming; Cao, Yang
通讯作者	Cao, Y
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	869
英文摘要	As a potential planting strategy, species mixing increases biomass production, improves ecosystem service functions, and mitigates climate change. However, the effect of species mixing on tree growth and drought resilience in semi-arid areas remains unclear. Hence, we established tree-ring chronologies of Robinia pseudoacacia L. in pure Robinia pseudoacacia L. plantation (RP) and mixed plantations with Hippophae rhamnoides L. and Populus simonii Carr. at differ-ent proportions of 8:2 and 5:5 (RH 8:2, RH 5:5, RC 8:2, RC 5:5) in the typical semi-arid region of the Loess Plateau (LP), China. The mean annual growth, climate-growth relationships, and tree resilience (Rs) to drought, including resistance (Rt) and recovery (Rc), were analyzed using dendrochronological methods. The results showed that the growth of R. pseudoacacia L. in mixed plantations was lower when Palmer Drought Severity Index (PDSI) >0, but much higher than that in monoculture under drought stress (PDSI <0 or after drought event). Meanwhile, the relationship between PDSI and tree growth was significantly positive in the pure plantation, but weakened in the mixed plantations, indicat-ing that species mixing alleviated drought stress to some extent. The resilience results showed that, although the Rc was higher in monoculture after drought events, species mixing could enhance Rt and mitigate the growth decline of R. pseudoacacia L. during drought events. Moreover, the Rt varied significantly among mixing species and propor-tions and was also affected by the magnitude and timing of drought. The RC 5:5 and RH 8:2 had higher resistance to moderate and severe drought stress. However, RC 8:2 and RH 5:5 could cope better with mild drought stress. These results indicate that species mixing can alleviate drought stress and improve the drought resistance. Therefore, it is necessary to expand species mixing to maximize plantation functions and minimize the potential impacts of warming and drought in semi-arid regions.
英文关键词	Mixing plantations Mixing effect Climate-growth relationship Drought resilience Forest management Semi-arid regions
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000924966700001
WOS关键词	ECOSYSTEM PRODUCTIVITY ; GROWTH RESILIENCE ; TREE MORTALITY ; CLIMATE-CHANGE ; NORWAY SPRUCE ; CAMBIAL REACTIVATION ; PINUS-SYLVESTRIS ; RADIAL-GROWTH ; MIXED STANDS ; ABIES-ALBA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398503
推荐引用方式 GB/T 7714	Chen, Meng,Zhang, Xu,Li, Ming,et al. Species mixing enhances the resistance of Robinia pseudoacacia L. to drought events in semi-arid regions: Evidence from China's Loess Plateau[J],2023,869.
APA	Chen, Meng,Zhang, Xu,Li, Ming,&Cao, Yang.(2023).Species mixing enhances the resistance of Robinia pseudoacacia L. to drought events in semi-arid regions: Evidence from China's Loess Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,869.
MLA	Chen, Meng,et al."Species mixing enhances the resistance of Robinia pseudoacacia L. to drought events in semi-arid regions: Evidence from China's Loess Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 869(2023).