GSTDTAP  > 气候变化
DOI10.1016/j.foreco.2019.06.041
Dynamics of soil nitrogen cycling and losses under Norway spruce logging residues on a clear-cut
Smolander, Aino1; Tormanen, Tiina1; Kitunen, Veikko2; Lindroos, Antti-Jussi1
2019-10-01
发表期刊FOREST ECOLOGY AND MANAGEMENT
ISSN0378-1127
EISSN1872-7042
出版年2019
卷号449
文章类型Article
语种英语
国家Finland
英文摘要

This study aimed to determine the effects of Norway spruce logging residues on the early-stage dynamics of N cycling processes on a clear cut and how this is related to N losses via leaching or nitrous oxide emissions. We compared N cycling processes in soil under spruce logging residues (fresh residues 40 kg m(-2)) and in corresponding soil without the residues for four growing seasons on a clear-cut in southern Finland. In addition, two other sites were studied in the same region six years after clear-cutting in plots with three different amounts of spruce logging residues (0, 10, 40 kg m(-2)). Logging residues strongly stimulated net nitrification within the first three months after the residue treatment, and this stimulation continued over the whole study period, although NO3-N concentrations in the soil decreased. Residues increased the pH, rate of net N mineralization and microbial C-to-N ratio. N2O production in the laboratory and fluxes in the field were both studied after four growing seasons. N2O production was higher in the humus layer under the residues and originated from both autotrophic nitrification and denitrification. N2O fluxes in the field were low but were also higher in the residuecontaining plots. N concentrations in percolate water were monitored for four years at the same site. Logging residues increased NO3-N and NH4-N concentrations; the highest concentrations were found during the second and third years after clear-cutting. After that the concentrations of dissolved organic N increased. Both the percolate water study at this site and the N cycling studies at the two other sites six years after clear-cutting showed that the largest amount of residues resulted in the highest rates of net N mineralization and net nitrification and the highest concentrations of mineral N forms in the percolate water. The amount and decomposition stage of the logging residues as well as the development of ground vegetation may together determine the dynamics of soil N cycling processes and losses.


英文关键词Forest soil Logging residues N cycling N losses Norway spruce Percolation water
领域气候变化
收录类别SCI-E
WOS记录号WOS:000484647700012
WOS关键词ORGANIC-MATTER ; FOREST SOILS ; PICEA-ABIES ; TREE GROWTH ; SCOTS PINE ; BOREAL ; REMOVAL ; CARBON ; DECOMPOSITION ; CHEMISTRY
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/187355
专题气候变化
作者单位1.Nat Resources Inst Finland, Latokartanonkaari 9, FI-00790 Helsinki, Finland;
2.Nat Resources Inst Finland, Tietotie 2, FI-02150 Espoo, Finland
推荐引用方式
GB/T 7714
Smolander, Aino,Tormanen, Tiina,Kitunen, Veikko,et al. Dynamics of soil nitrogen cycling and losses under Norway spruce logging residues on a clear-cut[J]. FOREST ECOLOGY AND MANAGEMENT,2019,449.
APA Smolander, Aino,Tormanen, Tiina,Kitunen, Veikko,&Lindroos, Antti-Jussi.(2019).Dynamics of soil nitrogen cycling and losses under Norway spruce logging residues on a clear-cut.FOREST ECOLOGY AND MANAGEMENT,449.
MLA Smolander, Aino,et al."Dynamics of soil nitrogen cycling and losses under Norway spruce logging residues on a clear-cut".FOREST ECOLOGY AND MANAGEMENT 449(2019).
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