干旱区生态环境知识资源中心(Arid): Retrospective Analysis of Tree Decline Based on Intrinsic Water-Use Efficiency in Semi-Arid Areas of North China

Arid

DOI	10.3390/atmos11060577
	Retrospective Analysis of Tree Decline Based on Intrinsic Water-Use Efficiency in Semi-Arid Areas of North China
	Lu, Weiwei 1,2; Yu, Xinxiao 2; Jia, Guodong 2
通讯作者	Yu, Xinxiao
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2020
卷号	11 期号:6
英文摘要	Long-term tree growth is significantly affected by climate change, which have become a global concern. Tree-ring width and isotopic information can show how trees respond to climate change on a long-term scale and reveal some phenomena of tree decline or death. In this study, we used isotopic techniques and investigated annual changes in carbon isotope composition and tree-ring width ofPopulus simonii Carr.in Zhangbei, as well as trends in tree-ring carbon discrimination (Delta C-13) and iWUE in normal, mildly declining and severely declining trees, in order to make a retrospective analysis and further understand the process of tree decline. We found that there were significant differences (p< 0.01 **) in delta C-13, Delta C-13, c(i)and iWUE at different decline stages, meaning that the delta C-13 and iWUE could be new indicators of tree health. The iWUE of all groups increased significantly, while the growth rate of declinedP. simoniiwas much higher than that of normal growthP. simonii. According to the analysis, there may be a threshold of iWUE for healthy trees, which once the threshold value is exceeded, it indicates that trees are resistant to adversity and their growth is under stress. Similarly, the changing trend of BAI supports our conclusion with its changes showed that tree growth became slower and slower as degradation progressed. iWUE inferred from tree-ring stable carbon isotope composition is a strong modulator of adaptation capacity in response to environmental stressors under climate change. Elevated annual temperatures and increased groundwater depth are all contributing to the decline ofP. simoniiin north China.
英文关键词	tree-rings climate change carbon-isotope discrimination iWUE tree decline
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000552479900001
WOS关键词	NONSTOMATAL LIMITATIONS ; DROUGHT STRESS ; CARBON ASSIMILATION ; WOODY ANGIOSPERMS ; HYDRAULIC FAILURE ; PHOTOSYNTHESIS ; FOREST ; PLANT ; DELTA-C-13 ; MORTALITY
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319430
作者单位	1.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China; 2.Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Lu, Weiwei,Yu, Xinxiao,Jia, Guodong. Retrospective Analysis of Tree Decline Based on Intrinsic Water-Use Efficiency in Semi-Arid Areas of North China[J]. 北京林业大学,2020,11(6).
APA	Lu, Weiwei,Yu, Xinxiao,&Jia, Guodong.(2020).Retrospective Analysis of Tree Decline Based on Intrinsic Water-Use Efficiency in Semi-Arid Areas of North China.ATMOSPHERE,11(6).
MLA	Lu, Weiwei,et al."Retrospective Analysis of Tree Decline Based on Intrinsic Water-Use Efficiency in Semi-Arid Areas of North China".ATMOSPHERE 11.6(2020).