DOI: 10.1016/j.foreco.2016.08.044
Scopus记录号: 2-s2.0-84985914533
论文题名: Differences in the recovery of four different nitrogen containing fertilizers after two application seasons in pine plantations across the southeastern 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: 380 起始页码: 161
结束页码: 171
语种: 英语
英文关键词: 15N
; Enhanced efficiency fertilizers
; Forest fertilization
; Nitrogen cycle
; Plantation forestry
Scopus关键词: Ecology
; Ecosystems
; Efficiency
; Fertilizers
; Forestry
; Metabolism
; Nitrogen
; Nitrogen fertilizers
; Recovery
; Soils
; Urea
; Ecosystem components
; Ecosystem recoveries
; Enhanced efficiency
; Forest fertilization
; Loblolly pine (pinus taeda l.)
; Nitrogen cycles
; Pine plantations
; Plantation forestry
; Urea fertilizers
; comparative study
; concentration (composition)
; coniferous tree
; crop rotation
; forest floor
; nitrogen cycle
; partitioning
; plantation forestry
; urea
; United States
; Pinus taeda
英文摘要: The ecosystem recovery of four nitrogen (N) containing fertilizers (urea and three enhanced efficiency fertilizers [EEFs]) enriched with 15N were compared at five different sites with single treatment replication per site for both a spring and summer application in mid-rotation loblolly pine (Pinus taeda L.) stands across the southeastern United States. Total ecosystem fertilizer N recovery was greater for all EEFs (78–84%) compared to urea (52%) with no differences among individual EEFs or between seasons. Fertilizer N recovery in the soil (forest floor + 0–30 cm) was greater for EEFs (36–43%) compared to urea (21%), with no significant treatment differences in fertilizer N recovery in the canopy (14–22%), stem (5–8%), or roots (11–14%). When individual ecosystem components were analyzed, the greatest difference in fertilizer N recovery occurred in the 0–15 cm mineral soil for EEFs (27–31%) compared to urea (13%). Differences for the same fertilizer treatment between the season of application were generally minor. Despite these minor differences between season of application, there was a general trend for higher fertilizer N recovery in the crop trees for all treatments for the spring fertilization compared to a higher fertilizer N recovery in the soil after the summer fertilization. Numerous treatment differences also occurred in individual ecosystem components for δ15N values (‰) and N concentrations within the same season, but only occasional differences between seasons. This research highlights an increased fertilizer N recovery and ecosystem partitioning of fertilizer N using EEFs compared to urea in southeastern pine plantations, regardless of the application season, and potentially translate to an increase in the fertilizer N use efficiency of 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/64710
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. Differences in the recovery of four different nitrogen containing fertilizers after two application seasons in pine plantations across the southeastern United States[J]. Forest Ecology and Management,2016-01-01,380