DOI: 10.1111/gcb.12802
论文题名: How inhibiting nitrification affects nitrogen cycle and reduces environmental impacts of anthropogenic nitrogen input
作者: Qiao C. ; Liu L. ; Hu S. ; Compton J.E. ; Greaver T.L. ; Li Q.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 3 起始页码: 1249
结束页码: 1257
语种: 英语
英文关键词: Cost-benefit analysis
; Ecosystem services
; N2O emission
; NH3 emission
; Nitrogen fertilizer
; Nitrogen leaching
; Nitrogen management
; NO emission
Scopus关键词: ammonia
; cost-benefit analysis
; ecosystem service
; environmental impact
; fertilizer
; nitrification
; nitrogen cycle
; nitrogen oxides
; Zea mays
; fertilizer
; nitrogen
; soil
; chemistry
; ecosystem
; environment
; meta analysis
; metabolism
; nitrification
; soil
; Ecosystem
; Environment
; Fertilizers
; Nitrification
; Nitrogen
; Soil
英文摘要: Anthropogenic activities, and in particular the use of synthetic nitrogen (N) fertilizer, have doubled global annual reactive N inputs in the past 50-100 years, causing deleterious effects on the environment through increased N leaching and nitrous oxide (N2O) and ammonia (NH3) emissions. Leaching and gaseous losses of N are greatly controlled by the net rate of microbial nitrification. Extensive experiments have been conducted to develop ways to inhibit this process through use of nitrification inhibitors (NI) in combination with fertilizers. Yet, no study has comprehensively assessed how inhibiting nitrification affects both hydrologic and gaseous losses of N and plant nitrogen use efficiency. We synthesized the results of 62 NI field studies and evaluated how NI application altered N cycle and ecosystem services in N-enriched systems. Our results showed that inhibiting nitrification by NI application increased NH3 emission (mean: 20%, 95% confidential interval: 33-67%), but reduced dissolved inorganic N leaching (-48%, -56% to -38%), N2O emission (-44%, -48% to -39%) and NO emission (-24%, -38% to -8%). This amounted to a net reduction of 16.5% in the total N release to the environment. Inhibiting nitrification also increased plant N recovery (58%, 34-93%) and productivity of grain (9%, 6-13%), straw (15%, 12-18%), vegetable (5%, 0-10%) and pasture hay (14%, 8-20%). The cost and benefit analysis showed that the economic benefit of reducing N's environmental impacts offsets the cost of NI application. Applying NI along with N fertilizer could bring additional revenues of $163 ha-1 yr-1 for a maize farm, equivalent to 8.95% increase in revenues. Our findings showed that NIs could create a win-win scenario that reduces the negative impact of N leaching and greenhouse gas production, while increases the agricultural output. However, NI's potential negative impacts, such as increase in NH3 emission and the risk of NI contamination, should be fully considered before large-scale application. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61613
Appears in Collections: 影响、适应和脆弱性
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作者单位: State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, No. 20 Nanxincun, Xiangshan, Beijing, China; University of Chinese Academy of Sciences, No. 19 Yuquan Road, Beijing, China; Department of Plant Pathology, North Carolina State University, Raleigh, NC, United States; Western Ecology Division, US Environmental Protection Agency, Corvallis, OR, United States; National Center for Environmental Assessment, US Environmental Protection Agency, Research Triangle Park, NC, United States; Biostatistics and Bioinformatics, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States
Recommended Citation:
Qiao C.,Liu L.,Hu S.,et al. How inhibiting nitrification affects nitrogen cycle and reduces environmental impacts of anthropogenic nitrogen input[J]. Global Change Biology,2015-01-01,21(3)