O and A soil horizons' boundaries detection using GPR under variable soil moisture conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F22%3A00559011" target="_blank" >RIV/86652079:_____/22:00559011 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0016706122002415?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016706122002415?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.geoderma.2022.115934" target="_blank" >10.1016/j.geoderma.2022.115934</a>

Result language

angličtina

Original language name

O and A soil horizons' boundaries detection using GPR under variable soil moisture conditions

Original language description

The thicknesses of organic (O) and organomineral (A) horizons are essential parameters for estimating the soil organic carbon stock. They are usually measured at sampling points distributed randomly or regularly over a site, but due to high spatial variability of the soil horizons' thicknesses, the sampling should be dense enough to estimate the carbon stock precisely. Dense soil sampling is cost, time, and labour demanding. Therefore, some studies suggest that geophysical methods such as ground-penetrating radar (GPR) can assist with a more precise estimation of the organic and organomineral horizons thicknesses without digging soil pits. This study evaluates the accuracy of the organic and the organomineral horizons thicknesses repeatedly measured under different soil moisture conditions on two contrasting soil types: Dystric Cambisol and Arenic Podzosol, using GPR with 800 MHz antenna. The results proved this method to be promising, however, we could not distinguish the boundary between organic and organomineral horizons but only the O + A horizon/subsoil boundary. The thickness of O + A horizons was estimated with an error between 25 and 35% in the Dystric Cambisol site and 18 24% in the Arenic Podzol site. The results were more accurate under moister conditions for both soil types, but under drier conditions, deeper parts of irregular horizon boundaries were better distinguishable.

Czech name

—

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

—

OECD FORD branch

40101 - Agriculture

Project

<a href="/en/project/LM2018123" target="_blank" >LM2018123: CzeCOS</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Geoderma

ISSN

0016-7061

e-ISSN

1872-6259

Volume of the periodical

422

Issue of the periodical within the volume

SEP

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

115934

UT code for WoS article

000812224500004

EID of the result in the Scopus database

2-s2.0-85133901046