Nitrogen deposition and carbon sequestration in alpine meadows

NWIPB OpenIR

	Nitrogen deposition and carbon sequestration in alpine meadows
	Xu Xingliang ; Ouyang Hua ; Cao Guangmin ; Pei Zhiyong ; Zhou Caiping
	2004
发表期刊	BIOGEOCHEMISTRY ; Xu Xingliang, Ouyang Hua, Cao Guangmin, Pei Zhiyong, Zhou Caiping.Nitrogen deposition and carbon sequestration in alpine meadows.BIOGEOCHEMISTRY,2004,71(3):353-369
摘要	Nitrogen deposition experiments were carried out in alpine meadow ecosystems in Qinghai-Xizang Plateau in China, in order to explore the contribution of nitrogen deposition to carbon sequestration in alpine meadows. Two methods were used in this respect. First, we used the allocation of N-15 tracer to soil and plant pools. Second, we used increased root biomass observed in the nitrogen-amended plots. Calculating enhanced carbon storage, we considered the net soil CO2 emissions exposed to nitrogen deposition in alpine meadows. Our results show that nitrogen deposition can enhance the net soil CO2 emissions, and thus offset part of carbon uptake by vegetation and soils. It means that we have to be cautious to draw a conclusion when we estimate the contribution of nitrogen deposition to carbon sequestration based on the partitioning of N-15 tracer in terrestrial ecosystems, in particular in N-limited ecosystems. Even if we assess the contribution of nitrogen deposition to carbon sequestration based on increased biomass exposed to nitrogen deposition in terrestrial ecosystems, likewise, we have to consider the effects of nitrogen deposition on the soil CO2 emissions.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/15217
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Xu Xingliang,Ouyang Hua,Cao Guangmin,et al. Nitrogen deposition and carbon sequestration in alpine meadows[J]. BIOGEOCHEMISTRY, Xu Xingliang, Ouyang Hua, Cao Guangmin, Pei Zhiyong, Zhou Caiping.Nitrogen deposition and carbon sequestration in alpine meadows.BIOGEOCHEMISTRY,2004,71(3):353-369,2004.
APA	Xu Xingliang,Ouyang Hua,Cao Guangmin,Pei Zhiyong,&Zhou Caiping.(2004).Nitrogen deposition and carbon sequestration in alpine meadows.BIOGEOCHEMISTRY.
MLA	Xu Xingliang,et al."Nitrogen deposition and carbon sequestration in alpine meadows".BIOGEOCHEMISTRY (2004).