Nitrogen Saturation and Carbon Sequestration in a Coniferous Forest Catchment: 32 years of Nitrogen Additions at Gårdsjön, Sweden

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F25%3A10169679" target="_blank" >RIV/00025798:_____/25:10169679 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/86652079:_____/25:00618633 RIV/60076658:12310/25:43909980

Výsledek na webu

<a href="https://doi.org/10.1007/s11270-025-07848-9" target="_blank" >https://doi.org/10.1007/s11270-025-07848-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11270-025-07848-9" target="_blank" >10.1007/s11270-025-07848-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nitrogen Saturation and Carbon Sequestration in a Coniferous Forest Catchment: 32 years of Nitrogen Additions at Gårdsjön, Sweden

Popis výsledku v původním jazyce

At G &amp; aring;rdsj &amp; ouml;n, Sweden, a long-term experiment has been conducted in which a 5250-m2 coniferous-forested catchment (G2 NITREX) receiving 8 kg N ha-1 yr-1 ambient N deposition has been given an additional 40 kg N ha-1 yr-1 in 20 small portions yearly. Catchment inputs and outputs of N have been monitored. The soils were systematically sampled in 1990 and 2016. Over 26 years (1991-2016) cumulative inputs were 1290 kg N ha-1 (deposition 230, additions 1030, nitrogen fixation 30). Cumulative outputs were 231 kg N ha-1 (runoff dissolved inorganic N 89, runoff dissolved organic N 55, denitrification 87). The ecosystem retained about 80% (1060 kg N ha-1) of the incoming N in the biomass and soils. About 80% of the retained N was found in the soil, mostly in the mineral horizons. The C/N ratio of the organic soil decreased from 32 to 29. The remaining 20% of the retained N went to plant biomass. The enhanced N deposition has resulted in sequestration of 44 t C ha-1. The C sequestered in the ecosystem had a C/N ratio of 34. The ecosystem has moved towards N saturation; the fraction of N added that is leached to runoff has increased from about 1% in 1991 to nearly 30% in 2022, 32 years later. As the N leaching and denitrification increase, less of the incoming N is available for C sequestration.

Název v anglickém jazyce

Nitrogen Saturation and Carbon Sequestration in a Coniferous Forest Catchment: 32 years of Nitrogen Additions at Gårdsjön, Sweden

Popis výsledku anglicky

At G &amp; aring;rdsj &amp; ouml;n, Sweden, a long-term experiment has been conducted in which a 5250-m2 coniferous-forested catchment (G2 NITREX) receiving 8 kg N ha-1 yr-1 ambient N deposition has been given an additional 40 kg N ha-1 yr-1 in 20 small portions yearly. Catchment inputs and outputs of N have been monitored. The soils were systematically sampled in 1990 and 2016. Over 26 years (1991-2016) cumulative inputs were 1290 kg N ha-1 (deposition 230, additions 1030, nitrogen fixation 30). Cumulative outputs were 231 kg N ha-1 (runoff dissolved inorganic N 89, runoff dissolved organic N 55, denitrification 87). The ecosystem retained about 80% (1060 kg N ha-1) of the incoming N in the biomass and soils. About 80% of the retained N was found in the soil, mostly in the mineral horizons. The C/N ratio of the organic soil decreased from 32 to 29. The remaining 20% of the retained N went to plant biomass. The enhanced N deposition has resulted in sequestration of 44 t C ha-1. The C sequestered in the ecosystem had a C/N ratio of 34. The ecosystem has moved towards N saturation; the fraction of N added that is leached to runoff has increased from about 1% in 1991 to nearly 30% in 2022, 32 years later. As the N leaching and denitrification increase, less of the incoming N is available for C sequestration.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Water, Air and Soil Pollution

ISSN

0049-6979

e-ISSN

1573-2932

Svazek periodika

236

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

nestránkováno

Kód UT WoS článku

001442134800005

EID výsledku v databázi Scopus

2-s2.0-105000058620