The response of root traits to precipitation change of herbaceous species in temperate steppes

doi:10.1111/1365-2435.13420

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

	The response of root traits to precipitation change of herbaceous species in temperate steppes
	Zhou, Meng ; Wang, Jing ; Bai, Wenming ; Zhang, Yushi ; Zhang, Wen-Hao
刊名	FUNCTIONAL ECOLOGY
	2019
卷号	33 期号:10 页码:2030-2041
关键词	first two-order roots intraspecific variation precipitation gradients root traits temperate grasslands water addition
ISSN号	0269-8463
DOI	10.1111/1365-2435.13420
文献子类	Article
英文摘要	Plasticity of root traits plays an important role in plant growth and survival under changing climate. Shift in precipitation is one of the most pertinent global change factors driving changes in structure and function of grasslands. However, few studies have investigated intraspecific variation of root traits in response to precipitation change under field conditions. We conducted a 10-year simulated increased precipitation experiment in a temperate grassland and a 700-km regional scale transect along a precipitation gradient ranging from 144.23 to 412.29 mm in northern China. The morphological, chemical and anatomical traits of the first two-order roots were determined on 15 common herbaceous species in the manipulation experiment and two regionally common species (Leymus chinensis, Artemisia frigida) along a precipitation gradient. We found that most of the root traits of the herbaceous species exhibited no significant responses to water addition. The two regionally common species adjusted their root traits at sites with the annual precipitation lower than certain value, that is 250 and 160 mm for L. chinensis and A. frigida, respectively. These results indicate that root traits of the herbaceous species exhibit little plasticity in response to precipitation change and that the adjustment of root traits occurs when the range of annual precipitation exceeds a certain threshold. Root traits of L. chinensis and A. frigida varied differently both in manipulation experiment and along the precipitation gradient. Root traits of L. chinensis were relatively constant, while A. frigida adjusted their morphological root traits in response to water addition. Moreover, L. chinensis showed higher specific root length (SRL) and area, and root N contents at sites with annual precipitation lower than c. 250 mm. In contrast, A. frigida displayed thicker roots with lower SRL and area at sites with annual precipitation lower than c. 160 mm. Our results showed that root traits of herbaceous species in temperate grasslands exhibited little plasticity and that different species have evolved diverse adaptive strategies in response to precipitation change. These novel findings provide valuable information to predict responses of temperate grasslands to future climate change.
学科主题	Ecology
电子版国际标准刊号	1365-2435
出版地	HOBOKEN
WOS关键词	PLANT ECONOMICS SPECTRUM ; ENVIRONMENTAL-FACTORS ; ECOSYSTEM CARBON ; WATER ; PLASTICITY ; GROWTH ; ACQUISITION ; GRASSLANDS ; STRATEGIES ; ARCHITECTURE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000482856400001
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670481, 31370468] ; State Key Basic Research Development Program of China [2016YFC0500706]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19528]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Zhang, Yushi 3.Bai, Wenming 4.Wang, Jing 5.[Zhou, Meng 6.Chinese Acad Sci, Inner Mongolia Res Ctr Prataculture, Beijing, Peoples R China 7.[Bai, Wenming 8.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Meng,Wang, Jing,Bai, Wenming,et al. The response of root traits to precipitation change of herbaceous species in temperate steppes[J]. FUNCTIONAL ECOLOGY,2019,33(10):2030-2041.
APA	Zhou, Meng,Wang, Jing,Bai, Wenming,Zhang, Yushi,&Zhang, Wen-Hao.(2019).The response of root traits to precipitation change of herbaceous species in temperate steppes.FUNCTIONAL ECOLOGY,33(10),2030-2041.
MLA	Zhou, Meng,et al."The response of root traits to precipitation change of herbaceous species in temperate steppes".FUNCTIONAL ECOLOGY 33.10(2019):2030-2041.