Effects of warming and nitrogen deposition on the coupling mechanism between soil nitrogen and phosphorus in Songnen Meadow Steppe, northeastern China

doi:10.1016/j.soilbio.2013.05.015

	Effects of warming and nitrogen deposition on the coupling mechanism between soil nitrogen and phosphorus in Songnen Meadow Steppe, northeastern China
	Zhang, Nanyi ; Guo, Rui 1; Song, Piao 2; Guo, Jixun ; Gao, Yingzhi
	2013
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	65 页码:96-104
摘要	Songnen Meadow Steppe, which is in northeast China, is increasingly affected by global warming and incremental increases in atmospheric nitrogen deposition. However, the responses of nitrogen (N) and phosphorus (P) in steppe soil, and of the coupling mechanism between them, to the dual effects of global warming and N deposition are still unknown. In this study, the effects of simulated atmospheric warming and N deposition on N and P in Songnen steppe soil, as well as on the coupling between N and P, were examined under in situ conditions. Infrared heaters were used to elevate soil temperature by approximately 1.7 degrees C since 2006. N additions were treated once a year with aqueous ammonium nitrate at a rate of 10 g m(-2) a(-1). During the four-year study, addition of N increased the amount of total N, and available N, as well as the rate of N mineralization in the soil. Moreover, the amounts of total P and available P in the soil were considerably reduced. Thus, the N:P ratio increased, and the coupling between N and P decreased. Similar values for the N:P ratio were obtained for the addition of N by itself and for the combination of warming and addition of N, which indicates that a small amount of soil warming in Songnen Meadow Steppe would not have a substantial effect on the ratio. With the growth of China's industrialization, N deposition continues to increase. The study area of Songnen Meadow Steppe, and northeast China in general, are characterized by widespread distribution of saline alkali soil. Therefore, the finding of increased P limitation in the soil of Songnen Meadow Steppe has major implications for ecosystems in northeast China. Reasonable regulation and management of meadow soil nutrients will be of great importance in increasing soil productivity and promoting sustainable use of grassland ecosystems. (C) 2013 Elsevier Ltd. All rights reserved.
关键词	Warming N addition Soil nitrogen Soil phosphorus Global change Coupling mechanism
学科领域	Soil Science
DOI	10.1016/j.soilbio.2013.05.015
收录类别	SCI
语种	英语
WOS关键词	TEMPERATE FOREST ECOSYSTEMS ; CLIMATE-CHANGE ; DIFFERENTIAL RESPONSES ; LITTER DECOMPOSITION ; PHOSPHATASE-ACTIVITY ; GRASSLAND ECOSYSTEM ; MICROBIAL BIOMASS ; REACTIVE NITROGEN ; ELEVATED CO2 ; MINERALIZATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000323686800012
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
资助机构	National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Strategic Priority Research Program of the Chinese Academy of Sciences(Chinese Academy of Sciences) ; Research Fund for the Doctoral Program of Higher Education of China(Research Fund for the Doctoral Program of Higher Education of China (RFDP)Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP))
引用统计	被引频次：77[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27883
专题	植被与环境变化国家重点实验室
作者单位	1.NE Normal Univ, Minist Educ, Key Lab Vegetat Ecol, Changchun 130024, Jilin, Peoples R China 2.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Key Lab Thyland Agr, Minist Agr, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Nanyi,Guo, Rui,Song, Piao,et al. Effects of warming and nitrogen deposition on the coupling mechanism between soil nitrogen and phosphorus in Songnen Meadow Steppe, northeastern China[J]. SOIL BIOLOGY & BIOCHEMISTRY,2013,65:96-104.
APA	Zhang, Nanyi,Guo, Rui,Song, Piao,Guo, Jixun,&Gao, Yingzhi.(2013).Effects of warming and nitrogen deposition on the coupling mechanism between soil nitrogen and phosphorus in Songnen Meadow Steppe, northeastern China.SOIL BIOLOGY & BIOCHEMISTRY,65,96-104.
MLA	Zhang, Nanyi,et al."Effects of warming and nitrogen deposition on the coupling mechanism between soil nitrogen and phosphorus in Songnen Meadow Steppe, northeastern China".SOIL BIOLOGY & BIOCHEMISTRY 65(2013):96-104.

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