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	Effects of plant functional diversity induced by grazing and soil properties on above- and belowground biomass in a semiarid grassland
	Zuo, Xiaoan1,2; Zhang, Jing1; Lv, Peng1; Wang, Shaokun1,2; Yang, Yang1; Yue, Xiyuan1; Zhou, Xin2; Li, Yulin2; Chen, Min1; Lian, Jie2
刊名	ECOLOGICAL INDICATORS
	2018-10-01
卷号	93页码:555-561
关键词	Ecosystem function Functional trait Grassland degradation Structural equation modelling Horqin grassland
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2018.05.032
通讯作者	Zuo, Xiaoan(zuoxa@izb.ac.cn)
英文摘要	The trait-based plant functional diversity is associated with ecosystem functioning. However, few studies show the effects of plant functional diversity induced by grazing disturbance and environmental changes on above-ground plant biomass (AGB) and belowground root biomass (BGB) in semiarid grasslands. We examined the effects of long-term grazing on plant functional diversity across four grassland types (meadow, steppe, scattered tree grassland and sandy grassland) in Horqin grassland, Northern China. The structural equation model (SEM) was used to evaluate the direct or indirect effects of long-term grazing, soil properties and functional diversity reflected by the single-trait (community-weighted mean) and multi-trait (functional dispersion, FDis) on AGB and BGB across four grassland types. We found that long-term grazing significantly decreased plant height and FDis, while the responses of leaf traits to grazing differed among four grassland types. The correlation analyses showed that AGB and BGB were negatively associated with grazing and positively associated with plant height, FDis, soil carbon (C) and nitrogen (N). The SEM results indicated that AGB was directly affected by grazing, soil N, plant height and perennial richness, and BGB was directly affected by grazing, soil N, soil water content and elevation. Grazing and soil N also indirectly affected AGB through their effects on plant height and FDis. Effect of plant height on aboveground plant biomass was direct rather than indirect, while FDis acted indirectly through its effect on perennial richness, thereby lending more support to the mass ratio hypothesis. Our results clearly highlight the critical role of plant functional diversity induced by grazing and soil properties in affecting AGB in a semiarid grassland ecosystem. So, we recommend considering the linkages of plant functional diversity with ecosystem function in assessing the effects of grazing and soil changes on grassland ecosystems.
收录类别	SCI
WOS关键词	INNER-MONGOLIA ; ABOVEGROUND BIOMASS ; INDIRECT DRIVERS ; SANDY GRASSLAND ; CARBON STORAGE ; ROOT BIOMASS ; LEAF TRAITS ; PRODUCTIVITY ; VEGETATION ; INTENSITY
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Environmental Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000452692600056
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558213
专题	寒区旱区环境与工程研究所
通讯作者	Zuo, Xiaoan
作者单位	1.Chinese Acad Sci, Urat Desert Grassland Res Stn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zuo, Xiaoan,Zhang, Jing,Lv, Peng,et al. Effects of plant functional diversity induced by grazing and soil properties on above- and belowground biomass in a semiarid grassland[J]. ECOLOGICAL INDICATORS,2018,93:555-561.
APA	Zuo, Xiaoan.,Zhang, Jing.,Lv, Peng.,Wang, Shaokun.,Yang, Yang.,...&Ma, Xujun.(2018).Effects of plant functional diversity induced by grazing and soil properties on above- and belowground biomass in a semiarid grassland.ECOLOGICAL INDICATORS,93,555-561.
MLA	Zuo, Xiaoan,et al."Effects of plant functional diversity induced by grazing and soil properties on above- and belowground biomass in a semiarid grassland".ECOLOGICAL INDICATORS 93(2018):555-561.

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