Variation in carbon, nitrogen and phosphorus partitioning between above- and belowground biomass along a precipitation gradient at Tibetan Plateau

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2016 > Vol13 No.4

	Variation in carbon, nitrogen and phosphorus partitioning between above- and belowground biomass along a precipitation gradient at Tibetan Plateau
	Hong Jiang-tao1,2 ; Wang Xiao-dan1 ; Wu Jian-bo1
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2016-04-01
卷号	13 期号:4 页码:661-671
关键词	Biomass allocation Nutrient concentration Qinghai-Tibetan Plateau Alpine steppe Stipa purpurea
ISSN号	1672-6316
通讯作者	WANG Xiao-dan
英文摘要	Precipitation is a potential factor that significantly affects plant nutrient pools by influencing biomass sizes and nutrient concentrations. However, few studies have explicitly dissected carbon (C), nitrogen (N) and phosphorus (P) pools between above- and belowground biomass at the community level along a precipitation gradient. We conducted a transect (approx. 1300 km long) study of Stipa purpurea community in alpine steppe on the Tibet Plateau of China to test the variation of N pool of aboveground biomass/N pool of belowground biomass (AB/BB N) and P pool of aboveground biomass/P pool of belowground biomass (AB/BB P) along a precipitation gradient. The proportion of aboveground biomass decreased significantly from mesic to drier sites. Along the belt transect, the plant N concentration was relatively stable; thus, AB/BB N increased with moisture due to the major influences by above- and belowground biomass allocation. However, P concentration of aboveground biomass decreased significantly with increasing precipitation and AB/BB P did not vary with aridity because of the offset effect of the P concentration and biomass allocation. Precipitation gradients do decouple the N and P pool of a S. purpurea community along a precipitation gradient in alpine steppe. The decreasing of N:P in aboveground biomass in drier regions may indicate much stronger N limitation in more arid area.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	N-P RATIOS ; ENVIRONMENTAL-FACTORS ; NUTRIENT LIMITATION ; ABOVEGROUND BIOMASS ; SOIL ; PLANTS ; ROOT ; ECOSYSTEMS ; GRASSLANDS ; DEPOSITION
收录类别	SCI
语种	英语
WOS记录号	WOS:000373882400007
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/15042]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.4 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hong Jiang-tao,Wang Xiao-dan,Wu Jian-bo. Variation in carbon, nitrogen and phosphorus partitioning between above- and belowground biomass along a precipitation gradient at Tibetan Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(4):661-671.
APA	Hong Jiang-tao,Wang Xiao-dan,&Wu Jian-bo.(2016).Variation in carbon, nitrogen and phosphorus partitioning between above- and belowground biomass along a precipitation gradient at Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,13(4),661-671.
MLA	Hong Jiang-tao,et al."Variation in carbon, nitrogen and phosphorus partitioning between above- and belowground biomass along a precipitation gradient at Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE 13.4(2016):661-671.