DOI: 10.1016/j.foreco.2013.08.028
Scopus记录号: 2-s2.0-84895926970
论文题名: Nitrogen budgets of forest ecosystems: A review
作者: Johnson D.W. ; Turner J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 318 起始页码: 370
结束页码: 379
语种: 英语
英文关键词: Forest floor n change
; N inputs
; N outputs
; Soil n change
; Vegetation n change
Scopus关键词: Budget control
; Deposition
; Ecosystems
; Meteorological problems
; Sedimentary rocks
; Time measurement
; Weathering
; Atmospheric depositions
; Decadal timescale
; Drought periods
; Forest ecosystem
; Forest floors
; Nitrogen budgets
; Parent materials
; Short term process
; Forestry
; atmospheric deposition
; decadal variation
; drought
; dry deposition
; forest ecosystem
; humid environment
; nitrogen cycle
; nitrogen fixation
; timescale
; Cost Control
; Deposition
; Ecosystems
; Forests
; Meteorology
; Plants
; Sedimentary Rock
; Soil
; Weathering
英文摘要: A review of forest N cycling literature indicates that most forest ecosystems contain less N than would be expected from even modest inputs of N from atmospheric deposition and N fixation over millennial time scales. Periodic fire could account for this disparity, even in humid systems during drought periods. In contrast to the millennial time scale patterns noted above, several forest ecosystems appear to accumulate more N than can be accounted for by measured or estimated inputs over decadal time scales. There appears to be some disparity between results from short term process studies and those from longer term budget analyses. Unmeasured inputs by dry deposition, non-symbiotic N fixation, or (in ecosystems with sedimentary parent materials) weathering of N from rocks may account for this occult N when it occurs. Research over the last two decades has suggested that N retained within forest ecosystems is not leached away after inputs have slowed, but remains within the system unless it is harvested or burned. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66069
Appears in Collections: 影响、适应和脆弱性
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作者单位: Natural Resources and Environmental Science, University of Nevada, Reno, NV 89557, United States; Forsci Pty. Ltd., Suite 4.05 Delhi Corporate, 32 Delhi Road, North Ryde, NSW 2113, Australia
Recommended Citation:
Johnson D.W.,Turner J.. Nitrogen budgets of forest ecosystems: A review[J]. Forest Ecology and Management,2014-01-01,318