Water-quality genesis in a mountain catchment affected by acidification and forestry practices

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F19%3A00496088" target="_blank" >RIV/60077344:_____/19:00496088 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/19:00327868

Výsledek na webu

<a href="https://www.journals.uchicago.edu/doi/10.1086/698533" target="_blank" >https://www.journals.uchicago.edu/doi/10.1086/698533</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1086/698533" target="_blank" >10.1086/698533</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Water-quality genesis in a mountain catchment affected by acidification and forestry practices

Popis výsledku v původním jazyce

Effects of changes in air pollution and forest cover on the acid atmospheric deposition and runoff were studied in the Jizerka experimental catchment (Czech Republic), a sensitive mountain environment of low buffering capacity. From 1982 to 2015, resident scientists and volunteers measured water quality of precipitation, fog, and stream samples at the watershed level. Archived LANDSAT imagery was used to reconstruct changes in forest composition in the watershed based on a detailed ground inventory done in 2010 to 2012. Spatial interpolation was used to approximate atmospheric deposition of water and SO42-, NO3-, and NH4+ over the watershed area. The open-field load of S peaked in 1987 to 1988 and dropped substantially in the 1990s, but inorganic N did not show a significant trend. The N : S deposition ratio increased from 0.37 to 2.83. Mean annual stream-water pH increased from 4.2 to 5.9, and concentrations of SO42- and NO3- decreased by 55 and 53%, respectively. Seasonal acidification of stream water was observed during snowmelt (March, April) and episodic summer rainstorms. The relatively rapid response of stream-water quality to reduced deposition corresponded with subsurface runoff generated in a shallow podzolic soil. Relatively high leaching of NO3- in the 1980s followed limited N uptake in damaged spruce stands and clear-cut areas. Recovery of stream-water chemistry followed the drop in the acid atmospheric deposition by similar to 5 y, and stream biota revived after 10 to 15 y. Removal of spruce forest and reduced air pollution caused faster recovery from acidification than expected from pure air-quality improvement. Reduced atmospheric deposition and fog-drip interactions caused by lower canopy area suggest that modified forestry practices can affect deposition rates and stream-water quality. Deciduous or mixed forests could decrease the acidic atmospheric load by reducing leaf area and surface roughness.

Název v anglickém jazyce

Water-quality genesis in a mountain catchment affected by acidification and forestry practices

Popis výsledku anglicky

Effects of changes in air pollution and forest cover on the acid atmospheric deposition and runoff were studied in the Jizerka experimental catchment (Czech Republic), a sensitive mountain environment of low buffering capacity. From 1982 to 2015, resident scientists and volunteers measured water quality of precipitation, fog, and stream samples at the watershed level. Archived LANDSAT imagery was used to reconstruct changes in forest composition in the watershed based on a detailed ground inventory done in 2010 to 2012. Spatial interpolation was used to approximate atmospheric deposition of water and SO42-, NO3-, and NH4+ over the watershed area. The open-field load of S peaked in 1987 to 1988 and dropped substantially in the 1990s, but inorganic N did not show a significant trend. The N : S deposition ratio increased from 0.37 to 2.83. Mean annual stream-water pH increased from 4.2 to 5.9, and concentrations of SO42- and NO3- decreased by 55 and 53%, respectively. Seasonal acidification of stream water was observed during snowmelt (March, April) and episodic summer rainstorms. The relatively rapid response of stream-water quality to reduced deposition corresponded with subsurface runoff generated in a shallow podzolic soil. Relatively high leaching of NO3- in the 1980s followed limited N uptake in damaged spruce stands and clear-cut areas. Recovery of stream-water chemistry followed the drop in the acid atmospheric deposition by similar to 5 y, and stream biota revived after 10 to 15 y. Removal of spruce forest and reduced air pollution caused faster recovery from acidification than expected from pure air-quality improvement. Reduced atmospheric deposition and fog-drip interactions caused by lower canopy area suggest that modified forestry practices can affect deposition rates and stream-water quality. Deciduous or mixed forests could decrease the acidic atmospheric load by reducing leaf area and surface roughness.

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

<a href="/cs/project/LTC17006" target="_blank" >LTC17006: Ekosystémové služby horských lesů povodí vodárenských nádrží v podmínkách kyselé atmosférické depozice a změny klimatu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Freshwater Science

ISSN

2161-9549

e-ISSN

—

Svazek periodika

38

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

257-269

Kód UT WoS článku

000474076400004

EID výsledku v databázi Scopus

2-s2.0-85048696826