Integrating species composition and leaf nitrogen content to indicate   effects of nitrogen deposition

doi:10.1016/j.envpol.2016.12.001

CORC > 北京大学 > 城市与环境学院

	Integrating species composition and leaf nitrogen content to indicate effects of nitrogen deposition
	Du, Enzai
刊名	ENVIRONMENTAL POLLUTION
	2017
关键词	Ecological indicator Leaf nitrogen content Nitrogen availability Nitrogen deposition Species composition NUTRIENT ENRICHMENT NORTHEAST CHINA AIR-POLLUTION FORESTS PLANTS STOICHIOMETRY BIOINDICATORS PHOSPHORUS GRASSLANDS RESPONSES
DOI	10.1016/j.envpol.2016.12.001
英文摘要	Nitrogen (N) deposition has been increasing globally and has arisen concerns of its impacts on terrestrial ecosystems. Ecological indicators play an important role in ecosystem monitoring, assessment and management in the context of an anthropogenic transformation of the global N cycle. By integrating species composition and leaf N stoichiometry, a new community N indicator was defined and validated in the understory plots of an N enrichment (as NH4NO3) experiment in an old-growth boreal forest in Northeast China. Three-year N additions showed no significant effect on the understory species richness, but an obvious shift in species composition occurred. The response of leaf N content to N additions was generally positive but varied by species. Overall, the community N indicator increased significantly with higher N addition level and soil available N content, being in the shape of a non-linear saturation response curve. The results suggest that the community N indicator could be an effective tool to indicate changes in ecosystem N availability. Critical values of the community N indicator for specific vegetation type could potentially provide useful information for nature conservation managers and policy makers. (C) 2016 Elsevier Ltd. All rights reserved.; Open Foundation of Key Laboratory for Earth Surface Processes of the Ministry of Education (Peking University) [201401]; National Natural Science Foundation of China [31400381]; National Basic Research Program of China on Global Change [2014CB954001]; SCI(E); ARTICLE; 392-397; 221
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/475509]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Du, Enzai. Integrating species composition and leaf nitrogen content to indicate effects of nitrogen deposition[J]. ENVIRONMENTAL POLLUTION,2017.
APA	Du, Enzai.(2017).Integrating species composition and leaf nitrogen content to indicate effects of nitrogen deposition.ENVIRONMENTAL POLLUTION.
MLA	Du, Enzai."Integrating species composition and leaf nitrogen content to indicate effects of nitrogen deposition".ENVIRONMENTAL POLLUTION (2017).