Effect of diversity on biomass across grasslands on the Mongolian Plateau: contrasting effects between plants and soil nematodes

doi:10.1111/jbi.12683

	Effect of diversity on biomass across grasslands on the Mongolian Plateau: contrasting effects between plants and soil nematodes
	Chen, Dima ; Cheng, Junhui ; Chu, Pengfei ; Mi, Jia ; Hu, Shuijin 1; Xie, Yichun 2; Tuvshintogtokh, Indree 3; Bai, Yongfei
	2016
发表期刊	JOURNAL OF BIOGEOGRAPHY
ISSN	0305-0270
卷号	43 期号:5 页码:955-966
摘要	Aim To assess how the diversity of above- and below-ground organisms changes along environmental gradients at the regional scale and whether the effects of diversity changes on biomass are similar for above- and below-ground organisms. Location Semi-arid grasslands of the Mongolian Plateau. Methods We investigated diversity (alpha-, beta- and gamma-) and biomass of plant and soil nematodes as well as environmental factors (climate, soil environment, and soil resource) at 44 field sites (220 plots) along a 2000-km east-west transect and a 900-km south-north transect across grasslands on the Mongolian Plateau. Regression was used to examine the relationships between diversity components and biomass of plants and nematodes. Hierarchical structural equation modelling (SEM) was performed to analyse the effects of environmental factors on diversity components and their linkages to biomass. Results The biomass of plants and nematodes correlated positively with biodiversity measures for plants and nematodes except that nematode biomass decreased as nematode beta-diversity increased. The relationship between plant and soil nematodes was positive for biomass and for alpha- and gamma-diversity, but it was negative for beta-diversity. When considering the environmental factors, hierarchical SEM indicated that variation in plant or nematode gamma-diversity was associated with changes in climate, soil environment, and soil resources. Variation in plant or nematode alpha-diversity was mainly associated with changes in gamma-diversity, while variation in the plant or nematode beta-diversity was mainly associated with changes in gamma-diversity and climate. The climate and soil resources explained most of the variation in plant biomass, whereas climate and alpha- and gamma-diversity explained most of the variation in nematode biomass. Surprisingly, plant biomass or diversity was only weakly related to soil nematodes when considering the environmental factors. Main conclusions Diversity and biomass patterns of nematodes and perhaps of other below-ground organisms are different from those of plants, and this difference is highly climate dependent. These findings suggest that a more complete understanding of diversity-biomass relationships will require further examination of more taxa across a broader range of environmental gradients.
关键词	above-ground community below-ground community biogeographical patterns climate diversity components soil environment soil resources
学科领域	Ecology ; Geography, Physical
DOI	10.1111/jbi.12683
收录类别	SCI
语种	英语
WOS关键词	SPECIES RICHNESS ; BETA-DIVERSITY ; UNIMODAL RELATIONSHIP ; PRODUCTIVITY ; PATTERNS ; BIODIVERSITY ; AVAILABILITY ; COMMUNITIES ; TEMPERATE ; ABUNDANCE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000375474800009
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2699
资助机构	Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31320103916, 31030013, 31570450] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA05050400] ; Land-Cover/Land-Use Program at NASA [NNX09AK87G]
作者邮箱	yfbai@ibcas.ac.cn
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25187
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, 20 Nanxincun, Beijing 100093, Peoples R China 2.N Carolina State Univ, Dept Plant Pathol, Box 7616, Raleigh, NC 27695 USA 3.Eastern Michigan Univ, Dept Geog & Geol, Ypsilanti, MI 48197 USA 4.Mongolian Acad Sci, Inst Bot, Dept Vegetat Ecol, Ulaanbaatar 51, Mongolia
推荐引用方式 GB/T 7714	Chen, Dima,Cheng, Junhui,Chu, Pengfei,et al. Effect of diversity on biomass across grasslands on the Mongolian Plateau: contrasting effects between plants and soil nematodes[J]. JOURNAL OF BIOGEOGRAPHY,2016,43(5):955-966.
APA	Chen, Dima.,Cheng, Junhui.,Chu, Pengfei.,Mi, Jia.,Hu, Shuijin.,...&Bai, Yongfei.(2016).Effect of diversity on biomass across grasslands on the Mongolian Plateau: contrasting effects between plants and soil nematodes.JOURNAL OF BIOGEOGRAPHY,43(5),955-966.
MLA	Chen, Dima,et al."Effect of diversity on biomass across grasslands on the Mongolian Plateau: contrasting effects between plants and soil nematodes".JOURNAL OF BIOGEOGRAPHY 43.5(2016):955-966.

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