DOI: 10.1016/j.foreco.2016.06.015
Scopus记录号: 2-s2.0-84975217683
论文题名: Ammonia volatilization following nitrogen fertilization with enhanced efficiency fertilizers and urea in loblolly pine (Pinus taeda L.) plantations of the southern United States
作者: Raymond J.E. ; Fox T.R. ; Strahm B.D. ; Zerpa J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 376 起始页码: 247
结束页码: 255
语种: 英语
英文关键词: 15N
; Ammonia volatilization
; Enhanced efficiency fertilizers
; Forest fertilization
; Loblolly pine
; Plantation forestry
Scopus关键词: Ammonia
; Efficiency
; Fertilizers
; Forestry
; Metabolism
; Nitrogen
; Nitrogen fertilizers
; Urea
; Ammonia volatilization
; Enhanced efficiency
; Forest fertilization
; Loblolly pine
; Plantation forestry
; Urea fertilizers
; ammonia
; coniferous tree
; fertilizer application
; forest ecosystem
; nitrogen
; nutrient use efficiency
; plantation forestry
; seasonal variation
; urea
; volatilization
; United States
; Pinus taeda
英文摘要: Ammonia (NH3) volatilization losses following surface application of urea and three enhanced efficiency nitrogen (N) containing fertilizers (EEFs) were compared in six thinned mid-rotation loblolly pine (Pinus taeda L.) stands across the southern United States. All fertilizer treatments were labeled with 15N (~370‰, 0.5 AP) and applied during two different seasons (spring, summer) in 2011 to open chamber microcosms. Individual microcosms were sampled 1, 15 and 30 days after fertilization to estimate remaining 15N. Losses of fertilizer N were determined using a mass balance calculation. Significantly less N loss occurred following fertilization with EEFs compared to urea after all sampling days for both seasons. Because root uptake was eliminated in the microcosms and there was no leaching of 15N below the microcosms, the most likely loss pathway of the 15N from the microcosms was NH3 volatilization. There were generally no differences among the individual EEFs. Following spring application, the mean NH3 volatilization during the 30 day experiment ranged from 4% to 26% for the EEFs compared to 26-40% for urea. In summer, mean NH3 volatilization for EEFs ranged from 8% to 23% compared to 29-49% for urea. This research highlights the potential of EEFs to reduce loss of fertilizer N in forest systems, potentially increasing fertilizer N use efficiency in these pine plantations. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64821
Appears in Collections: 影响、适应和脆弱性
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作者单位: Virginia Tech, Department of Forest Resources and Environmental Conservation (0324), 228 Cheatham Hall, Blacksburg, VA, United States
Recommended Citation:
Raymond J.E.,Fox T.R.,Strahm B.D.,et al. Ammonia volatilization following nitrogen fertilization with enhanced efficiency fertilizers and urea in loblolly pine (Pinus taeda L.) plantations of the southern United States[J]. Forest Ecology and Management,2016-01-01,376