气候变化领域集成服务门户(CCPortal): Aging Mongolian pine plantations face high risks of drought-induced growth decline: evidence from both individual tree and forest stand measurements

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DOI	10.1007/s11676-023-01677-4
	Aging Mongolian pine plantations face high risks of drought-induced growth decline: evidence from both individual tree and forest stand measurements
	Li, Mingyong; Yang, Leilei; Cao, Yu; Wu, Dedong; Hao, Guangyou
发表日期	2024
ISSN	1007-662X
EISSN	1993-0607
起始页码	35
结束页码	1
卷号	35 期号:1
英文摘要	Discerning vulnerability differences among different aged trees to drought-driven growth decline or to mortality is critical to implement age-specific countermeasures for forest management in water-limited areas. An important species for afforestation in dry environments of northern China, Mongolian pine (Pinus sylvestris var. mongolica Litv.) has recently exhibited growth decline and dieback on many sites, particularly pronounced in old-growth plantations. However, changes in response to drought stress by this species with age as well as the underlying mechanisms are poorly understood. In this study, tree-ring data and remotely sensed vegetation data were combined to investigate variations in growth at individual tree and stand scales for young (9 - 13 years) and aging (35 - 52 years) plantations of Mongolian pine in a water-limited area of northern China. A recent decline in tree-ring width in the older plantation also had lower values in satellited-derived normalized difference vegetation indices and normalized difference water indices relative to the younger plantations. In addition, all measured growth-related metrics were strongly correlated with the self-calibrating Palmer drought severity index during the growing season in the older plantation. Sensitivity of growth to drought of the older plantation might be attributed to more severe hydraulic limitations, as reflected by their lower sapwood- and leaf-specific hydraulic conductivities. Our study presents a comprehensive view on changes of growth with age by integrating multiple methods and provides an explanation from the perspective of plant hydraulics for growth decline with age. The results indicate that old-growth Mongolian pine plantations in water-limited environments may face increased growth declines under the context of climate warming and drying.
英文关键词	Tree age; Drought stress; Mongolian pine plantation; Tree rings; Remote sensing; Plant hydraulics
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:001149802200002
来源期刊	JOURNAL OF FORESTRY RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303173
作者单位	Chinese Academy of Sciences; Shenyang Institute of Applied Ecology, CAS; Chinese Academy of Sciences; Shenyang Institute of Applied Ecology, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Li, Mingyong,Yang, Leilei,Cao, Yu,et al. Aging Mongolian pine plantations face high risks of drought-induced growth decline: evidence from both individual tree and forest stand measurements[J],2024,35(1).
APA	Li, Mingyong,Yang, Leilei,Cao, Yu,Wu, Dedong,&Hao, Guangyou.(2024).Aging Mongolian pine plantations face high risks of drought-induced growth decline: evidence from both individual tree and forest stand measurements.JOURNAL OF FORESTRY RESEARCH,35(1).
MLA	Li, Mingyong,et al."Aging Mongolian pine plantations face high risks of drought-induced growth decline: evidence from both individual tree and forest stand measurements".JOURNAL OF FORESTRY RESEARCH 35.1(2024).