Increasing water availability and facilitation weaken biodiversity-biomass relationships in shrublands

doi:10.1002/ecy.2624

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

	Increasing water availability and facilitation weaken biodiversity-biomass relationships in shrublands
	Guo, Yanpei 1,2; Schob, Christian 1,9; Ma, Wenhong 8; Mohammat, Anwar 7; Liu, Hongyan 2; Yu, Shunli 6; Jiang, Youxu 2,5; Schmid, Bernhard 1,4; Tang, Zhiyao 2
刊名	ECOLOGY
	2019
卷号	100 期号:3
关键词	biodiversity-ecosystem functioning relationships biomass competition facilitation shrub density shrublands water availability
ISSN号	0012-9658
DOI	10.1002/ecy.2624
文献子类	Article
英文摘要	Positive biodiversity-ecosystem-functioning (BEF) relationships are commonly found in experimental and observational studies, but how they vary in different environmental contexts and under the influence of coexisting life forms is still controversial. Investigating these variations is important for making predictions regarding the dynamics of plant communities and carbon pools under global change. We conducted this study across 433 shrubland sites in northern China. We fitted structural equation models (SEMs) to analyze the variation in the species-richness-biomass relationships of shrubs and herbs along a wetness gradient and general liner models (GLMs) to analyze how shrub or herb biomass affected the species-richness-biomass relationship of the other life form. We found that the positive species-richness-biomass relationships for both shrubs and herbs became weaker or even negative with higher water availability, likely indicating stronger interspecific competition within life forms under more benign conditions. After accounting for variation in environmental contexts using residual regression, we found that the benign effect of greater facilitation by a larger shrub biomass reduced the positive species-richness-biomass relationships of herbs, causing them to become nonsignificant. Different levels of herb biomass, however, did not change the species-richness-biomass relationship of shrubs, possibly because greater herb biomass did not alter the stress level for shrubs. We conclude that biodiversity in the studied plant communities is particularly important for plant biomass production under arid conditions and that it might be possible to use shrubs as nurse plants to facilitate understory herb establishment in ecological restoration.
学科主题	Ecology
电子版国际标准刊号	1939-9170
出版地	HOBOKEN
WOS关键词	DIVERSITY-PRODUCTIVITY RELATIONSHIPS ; TREE SPECIES-DIVERSITY ; POSITIVE INTERACTIONS ; PLANT INTERACTIONS ; ECOSYSTEM FUNCTION ; CARBON STORAGE ; COMPETITION ; NITROGEN ; STRESS ; GROWTH
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000460163500020
资助机构	National Key Research and Development Plan [2017YFA0605101] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31770489, 31621091] ; Chinese Academy of SciencesChinese Academy of Sciences [XDA05050300] ; Chinese Scholarship CouncilChina Scholarship Council [20160610292] ; University Research Priority Program Global Change and Biodiversity of the University of Zurich
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19594]
专题	植被与环境变化国家重点实验室
作者单位	1.Peking Univ, Key Lab Earth Surface Proc, Beijing, Peoples R China 2.Peking Univ, Inst Ecol, Coll Urban & Environm Sci, Beijing, Peoples R China 3.Univ Zurich, Dept Geog, Zurich, Switzerland 4.Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, State Forestry Adm, Key Lab Forest Ecol & Environm, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Changes, Beijing, Peoples R China 6.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China 7.Inner Mongolia Univ, Sch Life Sci, Hohhot, Peoples R China 8.Swiss Fed Inst Technol, Swiss Fed Inst Technol, Dept Environm Syst Sci, Zurich, Switzerland 9.Univ Zurich, Dept Evolutionary Biol & Environm Studies, Zurich, Switzerland
推荐引用方式 GB/T 7714	Guo, Yanpei,Schob, Christian,Ma, Wenhong,et al. Increasing water availability and facilitation weaken biodiversity-biomass relationships in shrublands[J]. ECOLOGY,2019,100(3).
APA	Guo, Yanpei.,Schob, Christian.,Ma, Wenhong.,Mohammat, Anwar.,Liu, Hongyan.,...&Tang, Zhiyao.(2019).Increasing water availability and facilitation weaken biodiversity-biomass relationships in shrublands.ECOLOGY,100(3).
MLA	Guo, Yanpei,et al."Increasing water availability and facilitation weaken biodiversity-biomass relationships in shrublands".ECOLOGY 100.3(2019).