Differences in spatial and temporal root lifespan of three Stipa grasslands in northern China

doi:10.1371/journal.pone.0170276

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Differences in spatial and temporal root lifespan of three Stipa grasslands in northern China
	Bai, W. M.; Zhou, M.; Fang, Y.; Zhang, W. H.
刊名	BIOGEOCHEMISTRY
	2017
卷号	132 期号:3 页码:293-306
关键词	Inner Mongolia grasslands Rhizotron Root longevity Root turnover Temperate steppe
ISSN号	0168-2563
DOI	10.1371/journal.pone.0170276
文献子类	Article
英文摘要	Lifespan of fine root plays an important role in regulating carbon (C) cycling in terrestrial ecosystems. Determination of root lifespan and elucidation of its regulatory mechanism in different plant communities are essential for accurate prediction of C cycling from ecosystem to regional scales. There are three major types of grasslands in the temperate steppes of Inner Mongolia, each dominated by a different species of common grass: Stipa krylovi, Stipa grandis, and Stipa breviflora. There have been no studies to compare the root dynamics among the three types of grasslands. In the present study, we determined root lifespan of the three grasslands using the rhizotron technique. We found that root lifespan differed substantially among the three major types of grasslands within the temperate steppes of Inner Mongolia, such that root lifespan of S. breviflora > S. grandis > S. krylovii grasslands. Root lifespan across the three types of grasslands displayed a similar temporal pattern, such that root lifespan followed the order of autumn-born roots > summer-born roots > spring-born roots. The spatial and temporal differences in root lifespan across the three types of grasslands were mainly related to contents of soluble sugars in roots of the dominant species and BNPP/ANPP ratio of the communities. The differences in root lifespan across the major types of grasslands and different seasons highlight the potential importance of taking these differences into account in models of future carbon cycling and climate change.
学科主题	Science & Technology - Other Topics
电子版国际标准刊号	1573-515X
出版地	DORDRECHT
WOS关键词	INNER-MONGOLIA ; TEMPERATE TREES ; GLOBAL PATTERNS ; NORWAY SPRUCE ; TURNOVER ; LONGEVITY ; FOREST ; DYNAMICS ; STEPPE ; ECOSYSTEM
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000396129000032
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370468, 31670481] ; State Key Basic Research Development Program of China [2013CB956304]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/22112]
专题	植被与环境变化国家重点实验室
作者单位	1.Zhou, M. 2.Fang, Y. 3.Zhang, W. H.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.[Zhou, M. 5.Zhang, W. H.] Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing, Peoples R China 6.Zhang, W. H.] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 7.[Bai, W. M.
推荐引用方式 GB/T 7714	Bai, W. M.,Zhou, M.,Fang, Y.,et al. Differences in spatial and temporal root lifespan of three Stipa grasslands in northern China[J]. BIOGEOCHEMISTRY,2017,132(3):293-306.
APA	Bai, W. M.,Zhou, M.,Fang, Y.,&Zhang, W. H..(2017).Differences in spatial and temporal root lifespan of three Stipa grasslands in northern China.BIOGEOCHEMISTRY,132(3),293-306.
MLA	Bai, W. M.,et al."Differences in spatial and temporal root lifespan of three Stipa grasslands in northern China".BIOGEOCHEMISTRY 132.3(2017):293-306.