气候变化领域集成服务门户(CCPortal): Increased grazing intensities induce differentiation of the relationships between functional traits and aboveground plant biomass in shrub- and grass-dominated community in desert steppe

CCPortal

DOI	10.1111/1440-1703.12219
	Increased grazing intensities induce differentiation of the relationships between functional traits and aboveground plant biomass in shrub- and grass-dominated community in desert steppe
	Zhao, Shenglong; Zhang, Tonghui; Yue, Ping; Lv, Peng; Hu, Ya; Medina-Roldan, Eduardo; Zuo, Xiaoan
通讯作者	Zuo, XA (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0912-3814
EISSN	1440-1703
起始页码	590
结束页码	602
卷号	36 期号:4
英文摘要	Grazing disturbance plays a crucial role in regulating plant community structure and ecosystem function in drylands. However, few studies show that how grazing disturbance affects the relationships between functional traits and aboveground plant biomass (AGB). Here, we presented a comparative result from grazing experiment with three levels of grazing intensities (no grazing, moderate and heavy grazing) between shrub- and grass-dominated community in desert steppe, Inner Mongolia. We measured vegetation characteristics and plant traits (plant height, LT: leaf thickness, SLA: specific leaf area, LDMC: leaf dry matter content, LCC: leaf carbon content and LNC: leaf nitrogen content) in the two communities across 2 years (2017-2018). We used the linear regression analysis and the structural equation modeling (SEM) to examine how grazing affect the associations of AGB with plant traits. We found that grazing decreased vegetation cover, AGB and litter mass in two communities, and caused the differences in AGB among two communities. Heavy grazing eliminated the associations of AGB with SLA and LCC in shrub community, while led to their positive or negative associations in grass community. The SEM showed that grazing indirectly decreased AGB through its effect on LT in shrub community, and its effect on plant height in grass community. These results suggest that changes in leaf traits induced by heavy grazing can explain AGB in grass- rather than shrub-community, thereby possibly contributing to AGB differences between two communities. Indirect effects of increased grazing intensities on AGB in shrub or grass community are dependent on specific functional traits.
英文关键词	aboveground biomass; desert steppe; grazing intensity; plant functional traits; vegetation structure
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000636927500001
来源期刊	ECOLOGICAL RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254180
作者单位	[Zhao, Shenglong; Yue, Ping; Lv, Peng; Hu, Ya; Zuo, Xiaoan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China; [Zhao, Shenglong; Zhang, Tonghui; Lv, Peng; Zuo, Xiaoan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou, Peoples R China; [Zhao, Shenglong; Lv, Peng; Hu, Ya] Univ Chinese Acad Sci, Beijing, Peoples R China; [Medina-Roldan, Eduardo] Xian Jiaotong Liverpool Univ, Dept Hlth & Environm Sci, Suzhou, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Shenglong,Zhang, Tonghui,Yue, Ping,et al. Increased grazing intensities induce differentiation of the relationships between functional traits and aboveground plant biomass in shrub- and grass-dominated community in desert steppe[J]. 中国科学院西北生态环境资源研究院,2021,36(4).
APA	Zhao, Shenglong.,Zhang, Tonghui.,Yue, Ping.,Lv, Peng.,Hu, Ya.,...&Zuo, Xiaoan.(2021).Increased grazing intensities induce differentiation of the relationships between functional traits and aboveground plant biomass in shrub- and grass-dominated community in desert steppe.ECOLOGICAL RESEARCH,36(4).
MLA	Zhao, Shenglong,et al."Increased grazing intensities induce differentiation of the relationships between functional traits and aboveground plant biomass in shrub- and grass-dominated community in desert steppe".ECOLOGICAL RESEARCH 36.4(2021).