Environmental factors covary with plant diversity-productivity relationships among Chinese grassland sites

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Environmental factors covary with plant diversity-productivity relationships among Chinese grassland sites
	Ma ; Wenhong ; He ; Jin-Sheng ; Yang ; Yuanhe ; Wang ; Xiangping ; Liang ; Cunzhu ; Anwar ; Mohammat ; Zeng ; Hui ; Fang ; Jingyun ; Schmid ; Bernhard
刊名	GLOBAL ECOLOGY AND BIOGEOGRAPHY
	2010
卷号	19 期号:2 页码:233-243
关键词	SPECIES-RICHNESS BIODIVERSITY SCALE ECOSYSTEM BIOMASS COMMUNITIES PATTERNS LIMITATION RESOURCES INCREASE
ISSN号	1466-822X
通讯作者	He, JS, Peking Univ, Dept Ecol, Beijing 100871, Peoples R China
中文摘要	Aim Our objective was to document the general relationship between plant species richness (SR) and above-ground net primary productivity (ANPP) at different spatial scales and the environmental influence on this relationship. Location Temperate and alpine grasslands of China. Methods We investigated SR and ANPP at 321 field sites (1355 plots) across the widely distributed temperate and alpine grasslands of China. Ordinary least squares (OLS) regressions were used to test SR-ANPP relationships among site means. Plot-level data of SR and ANPP were analysed with general linear models (GLMs) and the correlation between SR and ANPP was decomposed into covariance components to test the influence of climatic variables, region, vegetation type and remaining variation among sites on SR, ANPP and their relationship. Results We found positive linear relationships between SR and ANPP among sites in both the alpine and temperate grassland regions and in different grassland vegetation types of these biomes. Environmental gradients such as growing-season precipitation affected both SR and ANPP in parallel. However, after removing the among-site environmental variation, residual SR and ANPP were no longer correlated at the pooled within-site level. Main conclusions The positive SR-ANPP relationship across large-scale environmental gradients among sites was most likely the result of climatic variables influencing SR and ANPP in parallel. Our results suggest that in China's natural grasslands there is no direct relationship between SR and ANPP, presumably because the pool of available species for local community assembly is large, in contrast to experiments where species pools are artificially reduced.
学科主题	自然地理学
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/10004]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Ma,Wenhong,He,et al. Environmental factors covary with plant diversity-productivity relationships among Chinese grassland sites[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2010,19(2):233-243.
APA	Ma.,Wenhong.,He.,Jin-Sheng.,Yang.,...&Bernhard.(2010).Environmental factors covary with plant diversity-productivity relationships among Chinese grassland sites.GLOBAL ECOLOGY AND BIOGEOGRAPHY,19(2),233-243.
MLA	Ma,et al."Environmental factors covary with plant diversity-productivity relationships among Chinese grassland sites".GLOBAL ECOLOGY AND BIOGEOGRAPHY 19.2(2010):233-243.