Nitrogen budgets for Scots pine and Norway spruce ecosystems 12 and 7 years after the end of long-term fertilisation

Ladanai, Svetlana; Ågren, Göran I.; Hyvönen, Riitta; Lundkvist, Heléne

doi:10.1016/j.foreco.2006.10.005

Cited by 10 publications

(6 citation statements)

References 64 publications

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“…Sulphur and nitrogen deposition in forest ecosystems have been intensively studied mainly due to its infl uence on nutrient imbalances and leaching of nitrogen compounds from soils and because sulphates and nitrates are the dominant anions in bulk deposition (Nilsson, Wiklund 1995;Calanni et al 1999;Ladanai et al 2007). Nitrogen is an important component of vital organic compounds, amino-acids, proteins and nucleic acids, and its defi ciency limits plant growth.…”

supporting

confidence: 90%

Sulphur and nitrogen concentrations and fluxes in bulk precipitation and throughfall in the mountain and highland spruce stands in the Czech Republic

Drápelová¹,

Menšík²,

Kulhavý³

et al. 2010

J. For. Sci.

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Concentrations and fluxes of sulphur and nitrogen compounds in bulk precipitation and in throughfall were evaluated and compared for two experimental sites in the Czech Republic: one situated at Rájec (Drahanská upland, 610 m a.s.l.) and the second one at Bílý Kříž (Moravian-Silesian Beskids, 908 m a.s.l.) both with similar stands of young Norway spruce. The three-year study performed during 2006-2008, revealed statistically significant differences in nitrate nitrogen concentrations in bulk precipitations and in ammonium nitrogen concentrations both in bulk precipitation and in throughfall between the two sites. Higher nitrogen compounds concentrations in bulk precipitation were found at Rájec. Differences between the two sites in sulphur concentrations were not found out neither in bulk precipitation nor in throughfall waters. Total sulphur deposition amounted to 8.

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supporting

confidence: 90%

Sulphur and nitrogen concentrations and fluxes in bulk precipitation and throughfall in the mountain and highland spruce stands in the Czech Republic

Drápelová¹,

Menšík²,

Kulhavý³

et al. 2010

J. For. Sci.

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“…The significant increase in mineral soil nitrogen concentration agrees with other published results (Jandl et al, 2003;Ladanai et al, 2007). The increased soil nitrogen concentration may have been caused directly by the retention of the added nitrogen in the mineral soil, most likely at Woodhill where fertilisation was still ongoing (Table 1), but the increases were probably more related to the increased inputs of nitrogen from litter fall (Table 2) and the increased concentration and pool of nitrogen in the FH layer (Table 3).…”

Section: Fh Layer and Mineral Soil Characteristicsmentioning

confidence: 89%

Nitrogen fertiliser effects on litter fall, FH layer and mineral soil characteristics in New Zealand Pinus radiata plantations

Smaill

Clinton

Greenfield

2008

Forest Ecology and Management

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“…), pine forests in Sweden (~4 kg·ha −1 ·yr −1 ; Ladanai et al. ), aggrading temporal forests in the eastern United States (3–8 kg·ha −1 ·yr −1 ; Aber et al. ), and could easily account for the observed declines in export from surface waters.…”

Section: Discussionmentioning

confidence: 99%

Long‐term declines in stream and river inorganic nitrogen (N) export correspond to forest change

Lucas

Sponseller

Gundale

et al. 2016

Ecological Applications

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Human activities have exerted a powerful influence on the biogeochemical cycles of nitrogen (N) and carbon (C) and drive changes that can be a challenge to predict given the influence of multiple environmental stressors. This study focused on understanding how land management and climate change have together influenced terrestrial N storage and watershed inorganic N export across boreal and sub-arctic landscapes in northern Sweden. Using long-term discharge and nutrient concentration data that have been collected continuously for over three decades, we calculated the hydrologic inorganic N export from nine watersheds in this region. We found a consistent decline in inorganic N export from 1985 to 2011 over the entire region from both small and large watersheds, despite the absence of any long-term trend in river discharge during this period. The steepest declines in inorganic N export were observed during the growing season, consistent with the hypothesis that observed changes are biologically mediated and are not the result of changes in long-term hydrology. Concurrent with the decrease in inorganic N export, we report sustained increases in terrestrial N accumulation in forest biomass and soils across northern Sweden. Given the close communication of nutrient and energy stores between plants, soils, and waters, our results indicate a regional tightening of the N cycle in an already N-limited environment as a result of changes in forest management and climate-mediated growth increases. Our results are consistent with declining inorganic N efflux previously reported from small headwater streams in other ecosystems and shed new light on the mechanisms controlling these patterns by identifying corresponding shifts in the terrestrial N balance, which have been altered by a combination of management activities and climate change.

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Nitrogen budgets for Scots pine and Norway spruce ecosystems 12 and 7 years after the end of long-term fertilisation

Cited by 10 publications

References 64 publications

Sulphur and nitrogen concentrations and fluxes in bulk precipitation and throughfall in the mountain and highland spruce stands in the Czech Republic

Sulphur and nitrogen concentrations and fluxes in bulk precipitation and throughfall in the mountain and highland spruce stands in the Czech Republic

Nitrogen fertiliser effects on litter fall, FH layer and mineral soil characteristics in New Zealand Pinus radiata plantations

Long‐term declines in stream and river inorganic nitrogen (N) export correspond to forest change

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