Towards a better spatial quantification of nitrogen deposition: A case study for Czech forests

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020699%3A_____%2F16%3AN0000020" target="_blank" >RIV/00020699:_____/16:N0000020 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10324705

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S0269749116300616" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0269749116300616</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2016.01.061" target="_blank" >10.1016/j.envpol.2016.01.061</a>

Result language

angličtina

Original language name

Towards a better spatial quantification of nitrogen deposition: A case study for Czech forests

Original language description

The quantification of atmospheric deposition flux is essential for assessment of its impact on ecosystems. We present an advanced approach for the estimation of the spatial pattern of atmospheric nitrogen deposition flux over the Czech forests, collating all available measured data and model results. The aim of the presented study is to provide an improved, more complete, more reliable and more realistic estimate of the spatial pattern of nitrogen deposition flux over one country. This has so far usually been based on measurements of ambient NOx concentrations as dry deposition proxy, and NH4+ and NO3- in precipitation as wet deposition proxy. For estimation of unmeasured species contributing to dry deposition, we used the CAMx Eulerian photochemical dispersion model, coupled with the Aladin regional numeric weather prediction model. The contribution of fog and dissolved organic nitrogen was estimated using a geostatistical data driven model. We prepared individual maps for particular components applying the most relevant approach and then merged all layers to obtain a final map representing the best estimate of nitrogen deposition over the Czech Republic. Final maps accounting for unmeasured species clearly indicate that the approach used so far may result in a substantial underestimation of nitrogen deposition flux. Our results showed that nitrogen deposition over the Czech forested area in 2008 was well above 2 g N m(-2) yr(-1), with almost 70% of forested area receiving 3-4 g N m(-2) yr(-1). NH3 and gaseous HNO3, contributing about 80%, dominated the dry nitrogen deposition. Estimating the unmeasured nitrogen species by modeled values provides realistic approximations of total nitrogen deposition that also result in more realistic spatial patterns that could be used as input for further studies of likely nitrogen impacts on ecosystems.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DG - Atmospheric sciences, meteorology

OECD FORD branch

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Project

<a href="/en/project/QI112A168" target="_blank" >QI112A168: Forest soils as the determining factor for the forest health, biodiversity and the base for forest production as well as for nonproductive functions.</a><br>

Continuities

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

Publication year

2016

Confidentiality

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

Name of the periodical

Environmental Pollution

ISSN

0269-7491

e-ISSN

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Volume of the periodical

213

Issue of the periodical within the volume

JUN 2016

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

1028-1041

UT code for WoS article

000377921800109

EID of the result in the Scopus database

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