干旱区生态环境知识资源中心(Arid): Carbon Allocation of Quercus mongolica Fisch. ex Ledeb. across Different Life Stages Differed by Tree and Shrub Growth Forms at the Driest Site of Its Distribution

Arid

DOI	10.3390/f13111745
	Carbon Allocation of Quercus mongolica Fisch. ex Ledeb. across Different Life Stages Differed by Tree and Shrub Growth Forms at the Driest Site of Its Distribution
	Qi, Yang; Liu, Hongyan; He, Wenqi; Dai, Jingyu; Shi, Liang; Song, Zhaopeng
通讯作者	Liu, HY
来源期刊	FORESTS
EISSN	1999-4907
出版年	2022
卷号	13 期号:11
英文摘要	There are less than 10% of woody species that can have both tree and shrub growth forms globally. At the xeric timberline, we observed the tree-to-shrub shift of the Quercus mongolica Fisch. ex Ledeb.. Few studies have explored the underlined mechanism of this morphological transition of tree-to-shrub in arid regions. To examine whether the tree-to-shrub shift affects carbohydrate allocation and to verify the effect of life stage on non-structural carbohydrate (NSC) storage, we measured the concentration of soluble sugar and starch of Q. mongolica in the seedlings, saplings, and adult trees by selecting two sites with either tree or shrub growth forms of Q. mongolica at the driest area of its distribution. Accordingly, there was no significant difference in the radial growth with different growth forms (p > 0.05). The results showed that the effects of growth form on NSC concentrations are significant in the seedling and sapling stages, but become less pronounced as Q. mongolica grows. The results of the linear mixed model showed that life stage has a significant effect on soluble sugar concentration of tree-form (p < 0.05), starch and TNC concentration of shrub-form (p < 0.05). Compared with a shrub form without seedling stage, a tree form needs to accumulate more soluble sugar from seedling stage to adapt to arid environment. Saplings and adult shrubs store more starch, especially in thick roots, in preparation for sprout regeneration. Our study shows that the same species with tree and shrub forms embody differentiated carbohydrate allocation strategies, suggesting that shrub form can better adapt to a drier habitat, and the tree-to-shrub shift can benefit the expansion of woody species distribution in dryland.
英文关键词	non-structural carbon Quercus mongolica growth-reproduction-storage tradeoffs xeric timberline acclimation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000882648900001
WOS关键词	WATER-STRESS ; CARBOHYDRATE DYNAMICS ; FOREST ; SEEDLINGS ; STORAGE ; PINE ; DEFOLIATION ; TOLERANCE ; PATTERNS ; RECOVERY
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/2XILL650/392640
推荐引用方式 GB/T 7714	Qi, Yang,Liu, Hongyan,He, Wenqi,et al. Carbon Allocation of Quercus mongolica Fisch. ex Ledeb. across Different Life Stages Differed by Tree and Shrub Growth Forms at the Driest Site of Its Distribution[J],2022,13(11).
APA	Qi, Yang,Liu, Hongyan,He, Wenqi,Dai, Jingyu,Shi, Liang,&Song, Zhaopeng.(2022).Carbon Allocation of Quercus mongolica Fisch. ex Ledeb. across Different Life Stages Differed by Tree and Shrub Growth Forms at the Driest Site of Its Distribution.FORESTS,13(11).
MLA	Qi, Yang,et al."Carbon Allocation of Quercus mongolica Fisch. ex Ledeb. across Different Life Stages Differed by Tree and Shrub Growth Forms at the Driest Site of Its Distribution".FORESTS 13.11(2022).