干旱区生态环境知识资源中心(Arid): Photosynthetic and hydraulic traits influence forest resistance and resilience to drought stress across different biomes

Arid

DOI	10.1016/j.scitotenv.2022.154517
	Photosynthetic and hydraulic traits influence forest resistance and resilience to drought stress across different biomes
	Hu, Yanting; Xiang, Wenhua; Schafer, Karina V. R.; Lei, Pifeng; Deng, Xiangwen; Forrester, David, I; Fang, Xi; Zeng, Yelin; Ouyang, Shuai; Chen, Liang; Peng, Changhui
通讯作者	Xiang, WH
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	828
英文摘要	Drought events lead to depressions in gross primary productivity (GPP) of forest ecosystems. Photosynthetic and hydraulic traits are important factors governing GPP variation. However, how these functional traits affect GPP responses to drought has not been well understood. We quantified the capacity of GPP to withstand changes during droughts (GPP_resistance) and its post-drought responses (GPP_resilience) using eddy covariance data from the FLUXNET2015 dataset, and investigated how functional traits of dominant tree species that comprised >80% of the biomass (or composition) influenced GPP_resistance or GPP_resilience. Light-saturated photosynthetic rate of dominant tree species was negatively related to GPP_resistance, and was positively correlated with GPP_resilience. Forests dominated by species with higher hydraulic safety margins (HSM), smaller vessel diameter (V-dia) and lower sensitivity of canopy stomatal conductance per unit land area (G(s)) to droughts had a higher GPP_resistance, while those dominated by species with lower HSM, larger V-dia and higher sensitivity of G(s) to droughts exhibited a higher GPP_resilience. Differences in functional traits of forests located in diverse climate regions led to distinct GPP sensitivities to droughts. Forests located in humid regions had a higher GPP_resilience while those in arid regions exhibited a higher GPP_resistance. Forest GPP_resistance was negatively related to drought intensity, and GPP_resilience was negatively related to drought duration. Our findings highlight the significant role of functional traits in governing forest resistance and resilience to droughts. Overall, forests dominated by species with higher hydraulic safety were more resistant to droughts, while forests containing species with higher photosynthetic and hydraulic efficiency recovered better from drought stress.
英文关键词	Forest resistance to drought Forest resilience to drought Climatic condition Photosynthetic rate Hydraulic traits Hydraulic efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000804479700014
WOS关键词	GAS-EXCHANGE RECOVERY ; STOMATAL CONDUCTANCE ; CARBON ASSIMILATION ; ATMOSPHERIC DEMAND ; WATER ; TRANSPIRATION ; CLIMATE ; SOIL ; CO2 ; SAFETY
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/2XILL650/394365
推荐引用方式 GB/T 7714	Hu, Yanting,Xiang, Wenhua,Schafer, Karina V. R.,et al. Photosynthetic and hydraulic traits influence forest resistance and resilience to drought stress across different biomes[J],2022,828.
APA	Hu, Yanting.,Xiang, Wenhua.,Schafer, Karina V. R..,Lei, Pifeng.,Deng, Xiangwen.,...&Peng, Changhui.(2022).Photosynthetic and hydraulic traits influence forest resistance and resilience to drought stress across different biomes.SCIENCE OF THE TOTAL ENVIRONMENT,828.
MLA	Hu, Yanting,et al."Photosynthetic and hydraulic traits influence forest resistance and resilience to drought stress across different biomes".SCIENCE OF THE TOTAL ENVIRONMENT 828(2022).