The sensitivity of water chemistry to climate in a forested, nitrogen-saturated catchment recovering from acidification.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F16%3A00465345" target="_blank" >RIV/60077344:_____/16:00465345 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ecolind.2015.12.014" target="_blank" >http://dx.doi.org/10.1016/j.ecolind.2015.12.014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ecolind.2015.12.014" target="_blank" >10.1016/j.ecolind.2015.12.014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The sensitivity of water chemistry to climate in a forested, nitrogen-saturated catchment recovering from acidification.

Popis výsledku v původním jazyce

Fluxes of major ions and nutrients were measured in the N-saturated mountain forest catchment-lake system of Čertovo (CT) Lake (Czech Republic) from 1998 to 2014. The lake has been rapidly recovering from atmospheric acidification due to a 90% decrease in sulphate deposition since the late 1980s and nitrate contribution to the pool of strong acid anion and leaching of dissolved organic carbon (DOC) have increased. Present concentrations of base cations, phosphorus (P), total organic N (TON), and ionic (Ali) and organically bound (Alo) aluminium in tributaries are thus predominantly governed by nitrate and DOC leaching. Despite a continuing recovery lasting 25 years, the CT catchment is still a net source of protons (H), producing 440 mol/ha/yr H on a catchment-area basis. Retention of the deposited inorganic N in the catchment averages 20%, and ammonium consumption (510 mol/ha/yr) and net nitrate production (280 mol/ha/yr) are together the dominant terrestrial H generating processes. In contrast, the importance of sulphate release from the soils on terrestrial H production is continuously decreasing, with an average of 470 mol/ha/yr during the study. The in-lake biogeochemical processes reduce the incoming acidity by similar to 40%, neutralizing 2250 mol/ha/yr on a lake-area basis. Denitrification and photochemical and microbial decomposition of DOC are the most important in-lake H consuming processes (50 and 39%, respectively), while hydrolysis of Ali (from tributaries and photochemically liberated from Alo) is the dominant in-lake H generating process. Because the trends in water chemistry and H balance in the catchment-lake system are increasingly related to variability in nitrate and DOC leaching, they have become sensitive to climate-related factors (drought, elevated runoff) and forest damage that significantly modify the leaching of these anions.

Název v anglickém jazyce

The sensitivity of water chemistry to climate in a forested, nitrogen-saturated catchment recovering from acidification.

Popis výsledku anglicky

Fluxes of major ions and nutrients were measured in the N-saturated mountain forest catchment-lake system of Čertovo (CT) Lake (Czech Republic) from 1998 to 2014. The lake has been rapidly recovering from atmospheric acidification due to a 90% decrease in sulphate deposition since the late 1980s and nitrate contribution to the pool of strong acid anion and leaching of dissolved organic carbon (DOC) have increased. Present concentrations of base cations, phosphorus (P), total organic N (TON), and ionic (Ali) and organically bound (Alo) aluminium in tributaries are thus predominantly governed by nitrate and DOC leaching. Despite a continuing recovery lasting 25 years, the CT catchment is still a net source of protons (H), producing 440 mol/ha/yr H on a catchment-area basis. Retention of the deposited inorganic N in the catchment averages 20%, and ammonium consumption (510 mol/ha/yr) and net nitrate production (280 mol/ha/yr) are together the dominant terrestrial H generating processes. In contrast, the importance of sulphate release from the soils on terrestrial H production is continuously decreasing, with an average of 470 mol/ha/yr during the study. The in-lake biogeochemical processes reduce the incoming acidity by similar to 40%, neutralizing 2250 mol/ha/yr on a lake-area basis. Denitrification and photochemical and microbial decomposition of DOC are the most important in-lake H consuming processes (50 and 39%, respectively), while hydrolysis of Ali (from tributaries and photochemically liberated from Alo) is the dominant in-lake H generating process. Because the trends in water chemistry and H balance in the catchment-lake system are increasingly related to variability in nitrate and DOC leaching, they have become sensitive to climate-related factors (drought, elevated runoff) and forest damage that significantly modify the leaching of these anions.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP504%2F12%2F1218" target="_blank" >GAP504/12/1218: Vliv přirozeného rozpadu horských smrkových porostů na mikroklima, chemismus a biodiversitu terestrických a vodních ekosystémů.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Ecological Indicators

ISSN

1470-160X

e-ISSN

—

Svazek periodika

63

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

196-208

Kód UT WoS článku

000370906000021

EID výsledku v databázi Scopus

2-s2.0-84952361610