干旱区生态环境知识资源中心(Arid): Leaf Age Compared to Tree Age Plays a Dominant Role in Leaf delta C-13 and delta N-15 of Qinghai Spruce (Picea crassifolia Kom.)

Arid

DOI	10.3390/f10040310
	Leaf Age Compared to Tree Age Plays a Dominant Role in Leaf delta C-13 and delta N-15 of Qinghai Spruce (Picea crassifolia Kom.)
	Li, Caijuan 1,2; Wang, Bo 1,2; Chen, Tuo 1; Xu, Guobao 1; Wu, Minghui 1,2; Wu, Guoju 1; Wang, Jinxiu 1,2
通讯作者	Chen, Tuo
来源期刊	FORESTS
EISSN	1999-4907
出版年	2019
卷号	10 期号:4
英文摘要	Leaf stable isotope compositions (C-13 and N-15) are influenced by various abiotic and biotic factors. Qinghai spruce (Picea crassifolia Kom.) as one of the dominant tree species in Qilian Mountains plays a key role in the ecological stability of arid region in the northwest of China. However, our knowledge of the relative importance of multiple factors on leaf C-13 and N-15 remains incomplete. In this work, we investigated the relationships of C-13 and N-15 to leaf age, tree age and leaf nutrients to examine the patterns and controls of leaf C-13 and N-15 variation of Picea crassifolia. Results showed that C-13 and N-15 of current-year leaves were more enriched than older ones at each tree age level. There was no significant difference in leaf C-13 values among trees of different ages, while juvenile trees (<50 years old) were N-15 depleted compared to middle-aged trees (50-100 years old) at each leaf age level except for 1-year-old leaves. Meanwhile, relative importance analysis has demonstrated that leaf age was one of the most important indicators for leaf C-13 and N-15. Moreover, leaf N concentrations played a dominant role in the variations of C-13 and N-15. Above all, these results provide valuable information on the eco-physiological responses of P. crassifolia in arid and semi-arid regions.
英文关键词	Leaf delta C-13 Leaf delta N-15 Growth stage Environmental factors Relative importance
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000467303600018
WOS关键词	CARBON-ISOTOPE COMPOSITION ; WATER-USE EFFICIENCY ; STABLE CARBON ; ENVIRONMENTAL-FACTORS ; NITROGEN ; DISCRIMINATION ; C-3 ; PATTERNS ; LEAVES ; PLANTS
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215690
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Caijuan,Wang, Bo,Chen, Tuo,et al. Leaf Age Compared to Tree Age Plays a Dominant Role in Leaf delta C-13 and delta N-15 of Qinghai Spruce (Picea crassifolia Kom.)[J],2019,10(4).
APA	Li, Caijuan.,Wang, Bo.,Chen, Tuo.,Xu, Guobao.,Wu, Minghui.,...&Wang, Jinxiu.(2019).Leaf Age Compared to Tree Age Plays a Dominant Role in Leaf delta C-13 and delta N-15 of Qinghai Spruce (Picea crassifolia Kom.).FORESTS,10(4).
MLA	Li, Caijuan,et al."Leaf Age Compared to Tree Age Plays a Dominant Role in Leaf delta C-13 and delta N-15 of Qinghai Spruce (Picea crassifolia Kom.)".FORESTS 10.4(2019).