In situ phosphorus dynamics in soil: long-term ion-exchange resin study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F18%3A43897691" target="_blank" >RIV/60076658:12310/18:43897691 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60077344:_____/18:00494819

Výsledek na webu

<a href="https://link.springer.com/content/pdf/10.1007%2Fs10533-018-0470-x.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007%2Fs10533-018-0470-x.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10533-018-0470-x" target="_blank" >10.1007/s10533-018-0470-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

In situ phosphorus dynamics in soil: long-term ion-exchange resin study

Popis výsledku v původním jazyce

Phosphorus (P) availability to soil biota is commonly determined using soil extraction methods, which can mobilise unclearly specified and stable soil P fractions. Alternatively, natural P availability can be estimated using in situ exposition of ferrous-oxide impregnated resin that continually removes P from soil solution. Over 10 consecutive years, we measured phosphate dynamics using such resin in soils of two catchments, differing in their bedrocks (P-poor micaschist and P-rich granite), P-sorption characteristics (different Al- and Fe-hydroxide pools) and terrestrial P export to receiving waters. The catchment with granitic bedrock loses P in the long-term, while soils on mica-schist permanently accumulate P from atmospheric deposition. We observed substantially higher soil P availability in the organo-mineral horizons along with higher terrestrial P export in the granitic catchment rather than in the mica-schist one. These results indicate that soils developed on the P-rich bedrock, and concurrently with lower P sorption capacity, have high in situ P availability. We further evaluated the main factors affecting soil P availability, using data on long-term environmental and edaphic variables. Soil P availability was partly controlled by abiotic factors such as throughfall chemistry, precipitation amount and the C-to-P ratio of litter. However, we assume that high losses of P in the granitic catchment can also be driven by microbial processes since decomposition activity was the most influential variable of available soil P in this catchment.

Název v anglickém jazyce

In situ phosphorus dynamics in soil: long-term ion-exchange resin study

Popis výsledku anglicky

Phosphorus (P) availability to soil biota is commonly determined using soil extraction methods, which can mobilise unclearly specified and stable soil P fractions. Alternatively, natural P availability can be estimated using in situ exposition of ferrous-oxide impregnated resin that continually removes P from soil solution. Over 10 consecutive years, we measured phosphate dynamics using such resin in soils of two catchments, differing in their bedrocks (P-poor micaschist and P-rich granite), P-sorption characteristics (different Al- and Fe-hydroxide pools) and terrestrial P export to receiving waters. The catchment with granitic bedrock loses P in the long-term, while soils on mica-schist permanently accumulate P from atmospheric deposition. We observed substantially higher soil P availability in the organo-mineral horizons along with higher terrestrial P export in the granitic catchment rather than in the mica-schist one. These results indicate that soils developed on the P-rich bedrock, and concurrently with lower P sorption capacity, have high in situ P availability. We further evaluated the main factors affecting soil P availability, using data on long-term environmental and edaphic variables. Soil P availability was partly controlled by abiotic factors such as throughfall chemistry, precipitation amount and the C-to-P ratio of litter. However, we assume that high losses of P in the granitic catchment can also be driven by microbial processes since decomposition activity was the most influential variable of available soil P in this catchment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40104 - Soil science

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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Biogeochemistry

ISSN

0168-2563

e-ISSN

—

Svazek periodika

139

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

307-320

Kód UT WoS článku

000440421100006

EID výsledku v databázi Scopus

2-s2.0-85050341833