Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2016.11.006 |
Nitrogen leaching following clear-cutting and soil scarification at a Scots pine site - A modelling study of a fertilization experiment | |
George, M. O. Rappe1; Hansson, L. J.1; Ring, E.2; Jansson, P. E.3; Gardenas, A. I.1,4 | |
2017-02-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 385 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | Boreal forest stands fertilized with nitrogen (N) might be susceptible to elevated N leaching following clear-cutting, with consequences for water quality and soil acidification. Here, we studied a forest fertilization experiment with N, 165 Hagfors, in Sweden during the first six years (2006-2011) following clear cutting. The N fertilization treatments were 0 kg ha(-1) (0 N) and 450 kg ha(-1) of N (450 N), supplied during 1981-1992 to a Scots pine (Pinus sylvestris L.) stand: the stand was harvested in March 2006. Following clear-cutting, disc trenching was performed and furrows (F), ridges (R) and areas in-between two furrows (IB) were created. We calculated the N leaching fluxes and ecosystem N budget during 2006-2011 as affected by previous N fertilization, disc trenching and interactions thereof, at Hagfors by the use of a process-based biogeophysical ecosystem model (CoupModel). The model was calibrated against measurements of soil water and temperature dynamics and previously reported measurements of N in soil solution, soil organic matter and vegetation biomass. Criteria for acceptance of model estimates were based on the range enclosed by the 95% confidence intervals of the mean of the field data used in calibration sampled at low frequency (1-2 occasions) and a combination of the mean error and the coefficient of the determination for variables sampled at a higher frequency (28-1921 occasions). The accepted model estimates of the mean annual leaching rates of N were 3.1 (range 1.4-22.7) and 2.4 (range 0.8-7.0) kg ha(-1) of N year in the treatments 0 N and 450 N, respectively, without disc trenching. Disc trenching increased N leaching during the regeneration phase, more so in the 450 N treatment (mean 6.1, range 1.9-16.7 kg ha(-1) of N year(-1)) than in the 0 N treatment (mean 4.6, range 1.9-12.9 kg ha(-1) of N year(-1)). Overall, differences in the posterior model parameter estimates between N treatments and disc trenched treatments F, R and IB were related to the soil physical component: the differences resulted in enhanced drainage in the disc trenched treatments. We conclude that vegetation biomass N accumulation controlled soil water N leaching, and disc trenching increased N leaching from the previously N fertilized plots at Hagfors by its effects on water drainage flow and vegetation N uptake. This finding warrants more research since N fertilization followed by soil scarification in boreal forests is a practice which may increase in the future. (C) 2016 Elsevier B.V. All rights reserved. |
英文关键词 | Nitrogen leaching Forest regeneration Nitrogen cycling Disc trenching Ecosystem modelling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000392680800028 |
WOS关键词 | CARBON-USE EFFICIENCY ; GROUND VEGETATION ; LOBLOLLY-PINE ; TEMPERATE FORESTS ; N FERTILIZATION ; NEEDLE LITTER ; STAND-LEVEL ; BOREAL ; WATER ; CUT |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22557 |
专题 | 气候变化 |
作者单位 | 1.Swedish Univ Agr Sci, Dept Soil & Environm, Box 7014, S-75007 Uppsala, Sweden; 2.Forestry Res Inst Sweden, Skogforsk, Uppsala Sci Pk, Uppsala, Sweden; 3.Royal Inst Technol, Dept Land & Water Resources Engn, Tekn Ringen 76, S-10044 Stockholm, Sweden; 4.Univ Gothenburg, Dept Biol & Environm Sci, Box 461, S-40530 Gothenburg, Sweden |
推荐引用方式 GB/T 7714 | George, M. O. Rappe,Hansson, L. J.,Ring, E.,et al. Nitrogen leaching following clear-cutting and soil scarification at a Scots pine site - A modelling study of a fertilization experiment[J]. FOREST ECOLOGY AND MANAGEMENT,2017,385. |
APA | George, M. O. Rappe,Hansson, L. J.,Ring, E.,Jansson, P. E.,&Gardenas, A. I..(2017).Nitrogen leaching following clear-cutting and soil scarification at a Scots pine site - A modelling study of a fertilization experiment.FOREST ECOLOGY AND MANAGEMENT,385. |
MLA | George, M. O. Rappe,et al."Nitrogen leaching following clear-cutting and soil scarification at a Scots pine site - A modelling study of a fertilization experiment".FOREST ECOLOGY AND MANAGEMENT 385(2017). |
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