Long-termnet transformation and quantitative molecular mechanisms of soil nitrogen during natural vegetation recovery of abandoned farmland on the Loess Plateau of China

doi:10.1016/j.scitotenv.2017.07.014

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Long-termnet transformation and quantitative molecular mechanisms of soil nitrogen during natural vegetation recovery of abandoned farmland on the Loess Plateau of China
	Wang, Honglei 1; Deng, Na 1; Wu, Duoyang 1; Hu, Shu 1; Kou, Meng 2; Wang, HL (reprint author), Nothwest A&F Univ, Inst Soil & Water Conservat, 26,Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
文章类型	Article
	2017
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
通讯作者邮箱	wanghonglei@nwsuaf.edu.cn
卷号	607 页码:152-159
摘要	The availability of nitrogen (N) can alter vegetation species composition and diversity in degraded ecosystems. A comprehensive understanding of the dynamic fate of ammonium (NH4+-N) and nitrate (NO3--N) processing and the underlying mechanisms are still lacking, particularly in arid to semi-arid degraded ecosystems. We compared and quantified the changes in the rates of net ammonification (R-a), nitrification (R-n) and total mineralization (R-m) and the abundance of bacteria, archaea, and microbial genes related to N transformation on the northern Loess Plateau of China across a 40-year chronosequence of farmland undergoing spontaneous restoration. We found that R-a, R-n, and R-m decreased in grassland soils (0-30-y sites) of different ages and exhibited significant increases at the 40-y sites. The capabilities of the soil to deliver NH4+-N and NO3--N were not a limiting factor during the growing season after 40 years of vegetation recovery. Soil mineral nitrogen may be not suitable for predicting and assessing the long-term (approximately 40 years) restoration success and progress. The abundance of functional N genes showed differences in sensitivity to natural vegetation recovery of abandoned farmland, which likely reflects the fact that the multi-pathways driven by N functional microbial communities had a large influence on the dynamic fate of NH4+-N and NO3--N. Quantitative response relationships between net N transformation rates and microbial genes related to N transformation were established, and these relationships confirmed that different N transformation processes were strongly linked with certain N functional genes, and collaboratively contributed to N transformation as vegetation recovery progressed. Specifically, R-a was controlled by AOA-amoA, AOB-amoA, and nxrA; R-n was governed by napA, narG, nirK, nirS, and nosZ; and R-m was controlled by nifH, apr, AOA-amoA, AOB-amoA, nirS, and nirK. (C) 2017 Elsevier B.V. All rights reserved.
关键词	Functional Gene Nitrification Denitrification Grassland Loess Plateau
学科领域	Environmental Sciences & Ecology
DOI	10.1016/j.scitotenv.2017.07.014
URL	查看原文
收录类别	SCI
出版地	AMSTERDAM
语种	英语
WOS记录号	WOS:000408755300017
出版者	ELSEVIER SCIENCE BV
项目资助者	Fundamental Research Funds for the Central Universities [Z109021711]; Start-up Funds of Northwest A F University [Z109021610]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C6] ; Fundamental Research Funds for the Central Universities [Z109021711]; Start-up Funds of Northwest A F University [Z109021610]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C6]
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/7872
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Wang, HL (reprint author), Nothwest A&F Univ, Inst Soil & Water Conservat, 26,Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dry Land Farming Loess, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Xianyang Normal Univ, Coll Nat Resources & Environm & Hist & Culture, Shaanxi 712000, Xianyang, Peoples R China
推荐引用方式 GB/T 7714	Wang, Honglei,Deng, Na,Wu, Duoyang,et al. Long-termnet transformation and quantitative molecular mechanisms of soil nitrogen during natural vegetation recovery of abandoned farmland on the Loess Plateau of China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,607:152-159.
APA	Wang, Honglei,Deng, Na,Wu, Duoyang,Hu, Shu,Kou, Meng,&Wang, HL .(2017).Long-termnet transformation and quantitative molecular mechanisms of soil nitrogen during natural vegetation recovery of abandoned farmland on the Loess Plateau of China.SCIENCE OF THE TOTAL ENVIRONMENT,607,152-159.
MLA	Wang, Honglei,et al."Long-termnet transformation and quantitative molecular mechanisms of soil nitrogen during natural vegetation recovery of abandoned farmland on the Loess Plateau of China".SCIENCE OF THE TOTAL ENVIRONMENT 607(2017):152-159.