Large-scale pattern of biomass partitioning across China's grasslands

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)

	Large-scale pattern of biomass partitioning across China's grasslands
	Yang ; Yuanhe ; Fang ; Jingyun ; Ma ; Wenhong ; Guo ; Dali ; Mohammat ; Anwar
刊名	GLOBAL ECOLOGY AND BIOGEOGRAPHY
	2010
卷号	19 期号:2 页码:268-277
关键词	ABOVEGROUND BIOMASS TALLGRASS PRAIRIE INTERANNUAL VARIABILITY TIBETAN GRASSLANDS USE EFFICIENCY ROOT BIOMASS LONG-TERM FIRE ALLOCATION PLANTS
ISSN号	1466-822X
通讯作者	Fang, JY, Peking Univ, Minist Educ, Dept Ecol, Beijing 100871, Peoples R China
中文摘要	Aim To investigate large-scale patterns of above-ground and below-ground biomass partitioning in grassland ecosystems and to test the isometric theory at the community level. Location Northern China, in diverse grassland types spanning temperate grasslands in arid and semi-arid regions to alpine grasslands on the Tibetan Plateau. Methods We investigated above-ground and below-ground biomass in China's grasslands by conducting five consecutive sampling campaigns across the northern part of the country during 2001-05. We then documented the root : shoot ratio (R/S) and its relationship with climatic factors for China's grasslands. We further explored relationships between above-ground and below-ground biomass across different grassland types. Results Our results indicated that the overall R/S of China's grasslands was larger than the global average (6.3 vs. 3.7). The R/S for China's grasslands did not show any significant trend with either mean annual temperature or mean annual precipitation. Above-ground biomass was nearly proportional to below-ground biomass with a scaling exponent (the slope of log-log linear relationship between above-ground and below-ground biomass) of 1.02 across various grassland types. The slope did not differ significantly between temperate and alpine grasslands or between steppe and meadow. Main conclusions Our findings support the isometric theory of above-ground and below-ground biomass partitioning, and suggest that above-ground biomass scales isometrically with below-ground biomass at the community level.
学科主题	生态学 ; 系统生态学
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/365004/10006]
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	Yang,Yuanhe,Fang,et al. Large-scale pattern of biomass partitioning across China's grasslands[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2010,19(2):268-277.
APA	Yang.,Yuanhe.,Fang.,Jingyun.,Ma.,...&Anwar.(2010).Large-scale pattern of biomass partitioning across China's grasslands.GLOBAL ECOLOGY AND BIOGEOGRAPHY,19(2),268-277.
MLA	Yang,et al."Large-scale pattern of biomass partitioning across China's grasslands".GLOBAL ECOLOGY AND BIOGEOGRAPHY 19.2(2010):268-277.