Soil structure dynamics in constructed Technosols for bioretention cells: X-ray microtomography study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00375518" target="_blank" >RIV/68407700:21110/25:00375518 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21720/25:00375518 RIV/60460709:41210/25:98627

Result on the web

<a href="https://doi.org/10.1007/s11368-024-03828-4" target="_blank" >https://doi.org/10.1007/s11368-024-03828-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11368-024-03828-4" target="_blank" >10.1007/s11368-024-03828-4</a>

Result language

angličtina

Original language name

Soil structure dynamics in constructed Technosols for bioretention cells: X-ray microtomography study

Original language description

Purpose Constructed Technosols are frequently used to create the biofilter layer of blue-green infrastructure elements when the local soil does not possess the necessary properties. However, the long-term functioning of the biofilter is not entirely understood. The aim of this study is to elucidate changes in the structure of a constructed Technosol based biofilter of a bioretention cell (BC) by means of x-ray tomography and additional physical characterization during the first years after installation under two different water regimes. Methods and materials Two identical experimental BCs were studied to investigate structural changes in biofilter. The BCs exhibited different water regimes. BC1 collected naturally occurring rain concentrated from the nearby roof, while BC2 lacked a regular inflow of water except for several irrigation events and exhibited drier conditions overall. Biofilter was constructed using a mixture of 50% sand, 30% compost, and 20% topsoil. Undistributed soil samples were collected from the biofilter at 7, 12, 18, 23, and 31 months after BC installation. The changes in the soil pore system geometry were assessed by analyzing morphological parameters derived from X-ray computed microtomography images (μCT) and additional physical parameters. The μCT images were analyzed using the SoilJ software package. Results In both BCs, soil consolidation accompanied by a significant reduction in macroporosity and pore connectivity, occurred between months 7 and 18 in BC1 and between months 7 and 12 in BC2. Macroporosity then gradually increased in BC1 between months 18 and 31. During the same period, in the drier soil of BC2, macroporosity and pore connectivity decreased. In BC1, the water field capacity increased between months 7 and 18, but then returned to its initial values by month 31. Conclusion The μCT proved to be suitable for assessing the structural changes of constructed Technosol. Significant differences in soil structure development were observed in BC, depending on the water regime. These differences were particularly evident in the development of field capacity, total porosity, and macroporosity.

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

10500 - Earth and related environmental sciences

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

2025

Confidentiality

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

Name of the periodical

Journal of Soils and Sediments

ISSN

1439-0108

e-ISSN

1614-7480

Volume of the periodical

25

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

18

Pages from-to

591-608

UT code for WoS article

001236515100001

EID of the result in the Scopus database

2-s2.0-85195110546