Diversity components and assembly patterns of plant functional traits determine community spatial stability under resource gradients in a desert steppe

doi:10.1071/RJ15094

NWIPB OpenIR

	Diversity components and assembly patterns of plant functional traits determine community spatial stability under resource gradients in a desert steppe
	Na, Zhao 1,2,4; Wang Zhengwen 3; Shao Xinqing 2; Kun, Wang 2
	2016
发表期刊	RANGELAND JOURNAL
卷号	38 期号:5 页码:511-521
文章类型	Article
摘要	The diversity-stability relationship has been addressed and debated for decades, but how this relationship is affected by nutrient availability remains contentious. In the present study we assessed the effects of plant diversity, in terms of species richness, functional group composition and functional trait diversity, on the spatial stability of net primary productivity (NPP) following nitrogen and phosphorus application. In addition, we explored how functional traits at the species level contribute to the spatial stability of NPP. The results support the hypothesis that greater diversity leads to higher spatial stability. This relationship was highly dependent on soil nutrient availability, and increasing species richness or functional trait diversity significantly increased spatial variation of NPP under a high N fertilisation level. The effects of high mineral fertilisation rates may perhaps have masked the effects of plant diversity. Although species richness or functional trait diversity of the original and modified communities from which species with particular functional traits had been removed were significantly different, there were no differences in the coefficients of variation in the NPP of those communities. The lack of difference demonstrated that the relationship between spatial variability and biodiversity depended on the measure of diversity applied and that the functional group composition exerted a stronger effect than other diversity measures. Further analyses revealed that spatial stability of NPP was enhanced with increased diversity in vegetative plant height, rooting depth and the presence of legume, and diminished with diversity in the root system type and life cycle under some fertilisation treatments. The present study demonstrates that the relationship between biodiversity and ecosystem functioning is variable with different diversity, identity and environmental factors. Evaluating the contribution of particular traits to community stability will ultimately help us better understand the mechanisms underlying the diversity-stability relationship.
关键词	Diversity Identity Soil Fertility Spatial Variability
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1071/RJ15094
关键词[WOS]	LAND-USE CHANGE ; GRASSLAND COMMUNITY ; SPECIES-RICHNESS ; BIODIVERSITY ; NITROGEN ; RESPONSES ; SOIL ; PRODUCTIVITY ; BIOMASS ; WATER
收录类别	SCI
语种	英语
项目资助者	National Key Basic Research Development Project(2006AA10Z250) ; National Science Foundation of China(NSFC 30870422)
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000386658700009
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6410
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810008, Peoples R China 2.China Agr Univ, Dept Grassland Sci, Beijing 100193, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 4.Guyuan State Key Monitoring & Res Stn Grassland E, Guyuan 076550, Peoples R China
推荐引用方式 GB/T 7714	Na, Zhao,Wang Zhengwen,Shao Xinqing,et al. Diversity components and assembly patterns of plant functional traits determine community spatial stability under resource gradients in a desert steppe[J]. RANGELAND JOURNAL,2016,38(5):511-521.
APA	Na, Zhao,Wang Zhengwen,Shao Xinqing,&Kun, Wang.(2016).Diversity components and assembly patterns of plant functional traits determine community spatial stability under resource gradients in a desert steppe.RANGELAND JOURNAL,38(5),511-521.
MLA	Na, Zhao,et al."Diversity components and assembly patterns of plant functional traits determine community spatial stability under resource gradients in a desert steppe".RANGELAND JOURNAL 38.5(2016):511-521.