DOI: 10.1016/j.foreco.2014.01.040
Scopus记录号: 2-s2.0-84893949416
论文题名: The effects of urea fertilization on carbon sequestration in Douglas-fir plantations of the coastal Pacific Northwest
作者: Shryock B. ; Littke K. ; Ciol M. ; Briggs D. ; Harrison R.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 318 起始页码: 341
结束页码: 348
语种: 英语
英文关键词: Carbon credit
; Carbon sequestration
; Douglas-fir plantation
; Forest fertilization
; Pacific Northwest
; Urea
英文摘要: If long-term carbon (C) sequestration can be quantifiably attributed to forest plantation nitrogen (N) fertilization, the net C credits could be used to offset the rising cost of fertilization and C released during the production, transportation, and application of N fertilizer and the effect of NOx volatilized after application. The purpose of our study was to determine the net change in C sequestration following N fertilization of second-growth Douglas-fir (Psuedotsuga menziesii [Mirb.] Franco) plantations in the Pacific Northwest. The C content of the trees, understory vegetation, forest floor, and mineral soil was quantified at age 26-33 at five sites, each with a fertilized plot that received a total of 896-1120kgNha-1 as urea over 16years paired with an unfertilized control plot. Tree biomass was estimated using biometric equations and by subtracting the difference between treatment and control at the year of site establishment from the difference between treatment and control final measurement. Understory vegetation on the fertilized plots contained significantly more C than on the control plots (0.2MgCha-1, S.D. 0.2). Nitrogen fertilization significantly increased C sequestered per tree by 2.2MgCha-1 (S.D. 1.8), but there was no significant increase in C sequestered in trees per plot. No significant change was found in forest floor, A horizon, and subsoil C contents due to fertilization. These results indicate that, while there is a greater amount of C stored per tree after fertilization, there was more difficulty in accessing C sequestration in forest plantations due to tree mortality and assumed soil variability between plots. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66072
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Environmental and Forest Science, University of Washington, Seattle, WA 98195, United States; Department of Physical Medicine and Rehabilitation, University of Washington, Seattle, WA 98195, United States
Recommended Citation:
Shryock B.,Littke K.,Ciol M.,et al. The effects of urea fertilization on carbon sequestration in Douglas-fir plantations of the coastal Pacific Northwest[J]. Forest Ecology and Management,2014-01-01,318