Soil N transformations and its controlling factors in temperate grasslands in China: A study from N-15 tracing experiment to literature synthesis

doi:10.1002/2016JG003533

	Soil N transformations and its controlling factors in temperate grasslands in China: A study from N-15 tracing experiment to literature synthesis
	Wang, Jing ; Wang, Liang 1; Feng, Xiaojuan1 ; Hu, Huifeng 1; Cai, Zucong 2,3,4; Mueller, Christoph 5,6; Zhang, Jinbo 2,3,4
	2016
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
卷号	121 期号:12 页码:2949-2959
摘要	Temperate grasslands in arid and semiarid regions cover about 40% of the total land area in China. So far, only a few studies have studied the N transformations in these important ecosystems. In the present study, soil gross N transformation rates in Inner Mongolia temperate grasslands in China were determined using a N-15 tracing experiment and combined with a literature synthesis to identify the soil N transformation characteristics and their controlling factors in a global perspective. Our results showed that the rates of gross N mineralization and immobilization NH4+ were significantly lower, while autotrophic nitrification rates were significantly higher in Chinese temperate grassland soils compared to other regions in the world. In particular, the primary mineral N consumption processes, i.e., immobilization of NO3- and NH4+, and dissimilatory nitrate reduction to ammonium, were on average much lower in temperate grassland soils in China, compared to other temperate grassland regions. The reduced heterotrophic activity and microbial growth associated with lower soil organic carbon and arid climate (e.g., mean annual precipitation) were identified as the main factors regulating soil N cycling in the studied regions in China. To restrict NO3- accumulation and associated high risks of N losses in these arid and semiarid ecosystems in China, it is important to develop the regimes of soil organic C and water management that promote the retention of N in these grassland ecosystems.
学科领域	Environmental Sciences ; Geosciences, Multidisciplinary
DOI	10.1002/2016JG003533
收录类别	SCI
语种	英语
WOS关键词	GROSS NITROGEN TRANSFORMATIONS ; DISSIMILATORY NITRATE REDUCTION ; POOL DILUTION ; HETEROTROPHIC NITRIFICATION ; SEMIARID GRASSLANDS ; MICROBIAL BIOMASS ; FOREST SOIL ; DYNAMICS ; MINERALIZATION ; MECHANISMS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000393134800003
出版者	AMER GEOPHYSICAL UNION
文献子类	Article
出版地	WASHINGTON
EISSN	2169-8961
资助机构	973 projectNational Basic Research Program of China [2015CB954201, 2014CB953803] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41571227] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [164320H116]
作者邮箱	zhangjinbo@njnu.edu.cn
作品OA属性	Bronze
引用统计	被引频次：29[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/2S10CLM1/25364
专题	中科院植物分子生理学重点实验室
作者单位	1.Nanjing Normal Univ, Sch Geog Sci, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Bot, Beijing, Peoples R China 3.State Key Lab Cultivat Base Geog Environm Evolut, Nanjing, Jiangsu, Peoples R China 4.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Jiangsu, Peoples R China 5.Nanjing Normal Univ, Minist Educ, Key Lab Virtual Geog Environm, Nanjing, Jiangsu, Peoples R China 6.Justus Liebig Univ Giessen, Dept Plant Ecol IFZ, Giessen, Germany 7.Univ Coll Dublin, Sch Biol & Environm Sci, Dublin, Ireland
推荐引用方式 GB/T 7714	Wang, Jing,Wang, Liang,Feng, Xiaojuan,et al. Soil N transformations and its controlling factors in temperate grasslands in China: A study from N-15 tracing experiment to literature synthesis[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2016,121(12):2949-2959.
APA	Wang, Jing.,Wang, Liang.,Feng, Xiaojuan.,Hu, Huifeng.,Cai, Zucong.,...&Zhang, Jinbo.(2016).Soil N transformations and its controlling factors in temperate grasslands in China: A study from N-15 tracing experiment to literature synthesis.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,121(12),2949-2959.
MLA	Wang, Jing,et al."Soil N transformations and its controlling factors in temperate grasslands in China: A study from N-15 tracing experiment to literature synthesis".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 121.12(2016):2949-2959.

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