Content of some potentially toxic elements in forest soils is higher under mixed forests than under broadleaved or coniferous forests

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027049%3A_____%2F23%3AN0000059" target="_blank" >RIV/00027049:_____/23:N0000059 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Content of some potentially toxic elements in forest soils is higher under mixed forests than under broadleaved or coniferous forests

Popis výsledku v původním jazyce

Forest soils can contain high amounts of potentially toxic elements (PTEs). These amounts depend on the position, stand conditions, and also on the tree species composition. Coniferous forests have bigger interception of dry deposition leading to higher inputs of PTEs to soils, and the accumulation of soil organic matter (SOM) as a potential sorbent of PTEs is usually higher there. On the other hand, the soils under coniferous trees are usually more acidic, which may increase mobility and potential leaching of some elements. In contrast, the soils under broadleaved forests are usually less acidic, but they contain typically SOM of better quality. Mixed forests can be expected to have intermediate properties and therefore also intermediate contents of PTEs. However, in a national survey focused on forest soil pollution in the Czech Republic, the concentrations of some PTEs, particularly Cd and Pb, were higher under mixed forests than under coniferous or broadleaved forests, especially at higher altitudes. Similar results were obtained also in other national surveys and regional studies. This contribution will present these differences. Potential reasons for this phenomenon will be analysed. The effect of soil pH, content and quality of SOM, geology, as well as the differences between forest floor and soil mineral horizons and regional specifics will be shown and discussed.

Název v anglickém jazyce

Content of some potentially toxic elements in forest soils is higher under mixed forests than under broadleaved or coniferous forests

Popis výsledku anglicky

Forest soils can contain high amounts of potentially toxic elements (PTEs). These amounts depend on the position, stand conditions, and also on the tree species composition. Coniferous forests have bigger interception of dry deposition leading to higher inputs of PTEs to soils, and the accumulation of soil organic matter (SOM) as a potential sorbent of PTEs is usually higher there. On the other hand, the soils under coniferous trees are usually more acidic, which may increase mobility and potential leaching of some elements. In contrast, the soils under broadleaved forests are usually less acidic, but they contain typically SOM of better quality. Mixed forests can be expected to have intermediate properties and therefore also intermediate contents of PTEs. However, in a national survey focused on forest soil pollution in the Czech Republic, the concentrations of some PTEs, particularly Cd and Pb, were higher under mixed forests than under coniferous or broadleaved forests, especially at higher altitudes. Similar results were obtained also in other national surveys and regional studies. This contribution will present these differences. Potential reasons for this phenomenon will be analysed. The effect of soil pH, content and quality of SOM, geology, as well as the differences between forest floor and soil mineral horizons and regional specifics will be shown and discussed.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

40102 - Forestry

Projekt

<a href="/cs/project/QK1920163" target="_blank" >QK1920163: Vývoj a verifikace prostorových modelů vlastností lesních půd v České republice</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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