Comparative analysis of annual rings of perennial forbs in the Loess Plateau, China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Comparative analysis of annual rings of perennial forbs in the Loess Plateau, China
	Shi, Songlin; Li, Zongshan; Wang, Hao; Wu, Xing; Wang, Shuai; Wang, Xiaochun; Liu, Guohua; Fu, Bojie
刊名	DENDROCHRONOLOGIA
	2016-06
卷号	38 页码:82-89
关键词	Herb-chronology Anatomical patterns Secondary root xylem Permanent main root Growth rate Age distribution
英文摘要	Although recent studies have demonstrated that annual growth rings are present among perennial forbs species at high northern latitudes, little is known about whether there are demarcated growth rings of perennial forbs in the Loess Plateau of China where plant growth is strongly limited by dry climate conditions and severe soil erosion. In this study, we collected the main roots of 11 perennial forbs species along the precipitation gradient in the Loess Plateau, and analyzed the growth rings in the secondary root xylem. We found that ten species showed distinct annual growth rings, and the anatomical patterns, including vessel size and density, varied considerably among different families. Our results suggest, for forbs species in the Loess Plateau, that vessel diameter in the root xylem was strongly correlated with growth rate of the forb's roots. Ring widths of the forbs showed a significant declining trend, reflecting the deteriorating signal of growth condition with age. In comparison to other families, forb species of Fabaceae usually have the evidently larger vessels that link directly to higher hydraulic capacity and growth rate. In terms of annual ring width patterns, this study provides an applicable approach to detecting effects of limited climatic conditions and life history strategies on herbaceous vegetation in the Loess Plateau. (C) 2016 Elsevier GmbH. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35539]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Shi, Songlin,Li, Zongshan,Wang, Hao,et al. Comparative analysis of annual rings of perennial forbs in the Loess Plateau, China[J]. DENDROCHRONOLOGIA,2016,38:82-89.
APA	Shi, Songlin.,Li, Zongshan.,Wang, Hao.,Wu, Xing.,Wang, Shuai.,...&Fu, Bojie.(2016).Comparative analysis of annual rings of perennial forbs in the Loess Plateau, China.DENDROCHRONOLOGIA,38,82-89.
MLA	Shi, Songlin,et al."Comparative analysis of annual rings of perennial forbs in the Loess Plateau, China".DENDROCHRONOLOGIA 38(2016):82-89.