Effect of snowmelt on the dynamics, isotopic and chemical composition of runoff in mature and regenerated forested catchments.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F21%3A00553950" target="_blank" >RIV/60077344:_____/21:00553950 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41330/21:85793

Výsledek na webu

<a href="https://doi.org/10.1016/j.jhydrol.2021.126437" target="_blank" >https://doi.org/10.1016/j.jhydrol.2021.126437</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jhydrol.2021.126437" target="_blank" >10.1016/j.jhydrol.2021.126437</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of snowmelt on the dynamics, isotopic and chemical composition of runoff in mature and regenerated forested catchments.

Popis výsledku v původním jazyce

Using isotopic and hydrochemical tools, we focused our study on water and element fluxes with snowmelt in two headwater catchments with different forest stands. One catchment is with mature, and the other catchment is with forest regenerating after a tree dieback. Sampling and analysis of the surface water and precipitation throughout one hydrological year, and of snowpack in snow season, enabled us to estimate the isotopic balance and chemical snowpack evolution, but also the snowmelt contribution to inlets and outlets of lakes. Stable isotope values varied from snowpack formation to snowmelt with delta H-2 amplitudes of 25 parts per thousand in the mature and 17 parts per thousand in the regenerating forest catchments over the duration of the snowpack persistence. The mature forest had one month longer duration of snow cover and higher concentration of solutes in the throughfall and snowpack. In both catchments, heavier isotopes of the water molecule (O-18 and H-2) preferentially left the snowpack, which stored considerable amount of rainwater and snowmelt. This resulted in heavy isotopes depletion in the end of the spring snowmelt. Ions were also eluted from the snowpack during rain events and partial snow melting throughout the winter, causing fluxes of diluted water at the end of the snowmelt. Our results demonstrate the hydrological and hydrochemical variability of the snowpack, which in the future may even increase with rising temperatures and changes of precipitation patterns.

Název v anglickém jazyce

Effect of snowmelt on the dynamics, isotopic and chemical composition of runoff in mature and regenerated forested catchments.

Popis výsledku anglicky

Using isotopic and hydrochemical tools, we focused our study on water and element fluxes with snowmelt in two headwater catchments with different forest stands. One catchment is with mature, and the other catchment is with forest regenerating after a tree dieback. Sampling and analysis of the surface water and precipitation throughout one hydrological year, and of snowpack in snow season, enabled us to estimate the isotopic balance and chemical snowpack evolution, but also the snowmelt contribution to inlets and outlets of lakes. Stable isotope values varied from snowpack formation to snowmelt with delta H-2 amplitudes of 25 parts per thousand in the mature and 17 parts per thousand in the regenerating forest catchments over the duration of the snowpack persistence. The mature forest had one month longer duration of snow cover and higher concentration of solutes in the throughfall and snowpack. In both catchments, heavier isotopes of the water molecule (O-18 and H-2) preferentially left the snowpack, which stored considerable amount of rainwater and snowmelt. This resulted in heavy isotopes depletion in the end of the spring snowmelt. Ions were also eluted from the snowpack during rain events and partial snow melting throughout the winter, causing fluxes of diluted water at the end of the snowmelt. Our results demonstrate the hydrological and hydrochemical variability of the snowpack, which in the future may even increase with rising temperatures and changes of precipitation patterns.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10501 - Hydrology

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

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Hydrology

ISSN

0022-1694

e-ISSN

1879-2707

Svazek periodika

598

Číslo periodika v rámci svazku

Jul

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

126437

Kód UT WoS článku

000661813200170

EID výsledku v databázi Scopus

2-s2.0-85106301948