Trends in riverine element fluxes: A chronicle of regional socio-economic changes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F17%3A00479774" target="_blank" >RIV/60077344:_____/17:00479774 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.watres.2017.08.067" target="_blank" >http://dx.doi.org/10.1016/j.watres.2017.08.067</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.watres.2017.08.067" target="_blank" >10.1016/j.watres.2017.08.067</a>

Result language

angličtina

Original language name

Trends in riverine element fluxes: A chronicle of regional socio-economic changes

Original language description

We show how concentrations of water solutes in the Vltava River (Czech Republic) and their riverine outputs from the catchment were modified by socio-economic changes, land use, and hydrology between 1960 and 2015. In the early 1960s, HCO 3 and Ca were the dominant ions. During 1960–1989 (a period of planned economy with an over-use of synthetic fertilizers, excessive draining of agricultural land and little environmental protection), the riverine concentrations of strong acid anions (SAAs: SO 4 , NO 3 , and Cl) increased 2–4-fold and their leaching was accompanied for by a 1.4–1.8-fold increase in concentrations of Ca, Mg, K, and Na. SAAs mostly originated from diffuse agricultural sources (synthetic fertilizers and mineralization of organic matter in freshly drained and deeply tilled agricultural land) and their annual average concentrations (as well as those of Ca, Mg, and K) were positively correlated with discharge. During 1990–2015 (a period of a re-established market economy, reduced fertilization, ceased drainage, partial conversion of arable land to pastures, and increasing environmental protection), concentrations of SO 4 and NO 3 significantly decreased due to reduced agricultural production and atmospheric pollution, and their positive correlations with discharge disappeared. In contrast, Na and Cl concentrations increased due to more intensive road de-icing, and their concentrations became negatively correlated with discharge. Trends in phosphorus concentrations reflected changes in its input by both diffuse (fertilizers) and point (wastewater) sources and were discharge independent.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10503 - Water resources

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Water Research

ISSN

0043-1354

e-ISSN

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Volume of the periodical

125

Issue of the periodical within the volume

NOV

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

374-383

UT code for WoS article

000413377000039

EID of the result in the Scopus database

2-s2.0-85028732147