Soil gross N ammonification and nitrification from tropical to temperate forests in eastern China

doi:10.1111/1365-2435.13024

	Soil gross N ammonification and nitrification from tropical to temperate forests in eastern China
	Wang, Changhui ; Wang, Nannan 1; Zhu, Jianxing 2; Liu, Yuan 1,2; Xu, Xiaofeng 3; Niu, Shuli 2; Yu, Guirui 2; Han, Xingguo; He, Nianpeng 2
	2018
发表期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
卷号	32 期号:1 页码:83-94
摘要	Nitrogen (N) ammonification and nitrification are two primary microbial processes controlling the availability of soil ammonium (NH4+), a key nutrient for vegetative growth. The large-scale patterns of gross ammonification (GA) and gross nitrification (GN) rates represent soil microbial adaptations to different vegetative and environmental conditions. In this study, we investigated GA and GN rates in nine forest soils along a 3,700-km north-south transect in eastern China. We used N-15-labelling techniques, along with field experiments and laboratory incubations, to assess in situ and potential rates of the GA and GN. The mean in situ GA rate was 4.90.5mg Nkg(-1)day(-1), whereas the mean potential rate of GA was 32.08.6mg Nkg(-1)day(-1). The mean in situ GN rate was 1.7 +/- 0.3mg Nkg(-1)day(-1) (potential GN rate: 3.2 +/- 0.6mg Nkg(-1)day(-1)). GA was significantly higher than GN along the transect, and there were high variations in GA and GN among different forests. Significant relationships were identified between meteorological factors (temperature and precipitation) and the GA and GN rates during the sampling month (August 2013). However, the mean GA rate in primary forest was significantly lower in the Huzhong (HZ), Dongling (DL), Taiyue (TY) and Dinghu (DH) sites compared with other sites, whereas with the exception of the Liangshui (LS) sampling site, the mean GN rate in primary and secondary forests showed the same trends. Significant differences in GA rates were found between primary and secondary forests at the LS and Changbai (CB) sites, and differences were detected in GN rate at the HZ, LS and Jiulian (JL) sites. Structural equation modelling analysis suggested that soil N contents, microbial biomass N pool sizes and bacterial abundance are the primary determinants of the in situ rates of GA and GN. The strong control of edaphic factors on GA and GN indicates a need to improve soil N models with more explicit representation of edaphic factors and their control on soil N transformations. A is available for this article.
关键词	ammonification forest microbe nitrification nitrogen productivity transect
学科领域	Ecology
DOI	10.1111/1365-2435.13024
收录类别	SCI
语种	英语
WOS关键词	NITROGEN TRANSFORMATIONS ; CLIMATE-CHANGE ; HETEROTROPHIC NITRIFICATION ; MICROBIAL COMMUNITIES ; INORGANIC N ; RATES ; MOISTURE ; FLUXES ; CARBON ; MINERALIZATION
WOS记录号	WOS:000419494600009
出版者	WILEY
Special Issue	SI
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2435
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31290221, 41573063, 31572452] ; National Nature Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [2016YFC0500202]
作者邮箱	henp@igsnrr.ac.cn
作品OA属性	Bronze
引用统计	被引频次：37[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/2S10CLM1/20435
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 4.San Diego State Univ, Biol Dept, San Diego, CA 92182 USA
推荐引用方式 GB/T 7714	Wang, Changhui,Wang, Nannan,Zhu, Jianxing,et al. Soil gross N ammonification and nitrification from tropical to temperate forests in eastern China[J]. FUNCTIONAL ECOLOGY,2018,32(1):83-94.
APA	Wang, Changhui.,Wang, Nannan.,Zhu, Jianxing.,Liu, Yuan.,Xu, Xiaofeng.,...&He, Nianpeng.(2018).Soil gross N ammonification and nitrification from tropical to temperate forests in eastern China.FUNCTIONAL ECOLOGY,32(1),83-94.
MLA	Wang, Changhui,et al."Soil gross N ammonification and nitrification from tropical to temperate forests in eastern China".FUNCTIONAL ECOLOGY 32.1(2018):83-94.

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