Aboveground biomass in Tibetan grasslands

doi:10.1016/j.jaridenv.2008.09.027

CORC > 北京大学 > 城市与环境学院

	Aboveground biomass in Tibetan grasslands
	Yang, Y. H. ; Fang, J. Y. ; Pan, Y. D. ; Ji, C. J.
刊名	journal of arid environments
	2009
关键词	Aboveground biomass Alpine grasslands Enhanced vegetation index Environmental control Precipitation Soil texture Temperature Tibetan Plateau NET PRIMARY PRODUCTION PATAGONIAN STEPPE UNITED-STATES PRIMARY PRODUCTIVITY GREAT-PLAINS VEGETATION CHINA PLATEAU CARBON TEMPERATURE
DOI	10.1016/j.jaridenv.2008.09.027
英文摘要	This study investigated spatial patterns and environmental controls of aboveground biomass (AGB) in alpine grasslands oil the Tibetan Plateau by integrating AGB data collected from 135 sites during 2001-2004 and concurrent enhanced vegetation index derived from MODIS data sets. The AGB was estimated at 68.8 g m(-2), with a larger value (90.8 g m(-2)) in alpine meadow than in alpine steppe (50.1 g m(-2)). It increased with growing season precipitation (GSP), but did not show a significant overall trend with growing season temperature (GST) although it was negatively correlated with GST at dry environments (<200 mm of GSP). Soil texture also influenced AGB, but the effect was coupled with precipitation; increased silt content caused a decrease of AGB at small GSP, and generated a meaningful increase under humid conditions. The correlation between AGB and sand content indicated an opposite trend with that between AGB and silt content. An analysis of general linear model depicted that precipitation, temperature, and soil texture together explained 54.2% of total variance in AGB. Our results suggest that moisture availability is a critical control of plant production, but temperature and soil texture also affect vegetation growth in high-altitude regions. (C) 2008 Elsevier Ltd. All rights reserved.; Ecology; Environmental Sciences; SCI(E); 49; ARTICLE; 1; 91-95; 73
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/246672]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Yang, Y. H.,Fang, J. Y.,Pan, Y. D.,et al. Aboveground biomass in Tibetan grasslands[J]. journal of arid environments,2009.
APA	Yang, Y. H.,Fang, J. Y.,Pan, Y. D.,&Ji, C. J..(2009).Aboveground biomass in Tibetan grasslands.journal of arid environments.
MLA	Yang, Y. H.,et al."Aboveground biomass in Tibetan grasslands".journal of arid environments (2009).