Microbial processing of organic matter drives stability and pore geometry of soil aggregates

Sheikh M.F. Rabbi; Budiman Minasny; Alex B. McBratney; Iain M. Young

doi:10.1016/j.geoderma.2019.114033

Microbial processing of organic matter drives stability and pore geometry of soil aggregates

Sheikh M.F. Rabbi^*, Budiman Minasny, Alex B. McBratney, Iain M. Young

^*Corresponding author for this work

Environmental Science and Engineering

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

The formation and stability of aggregates are crucial for soil function. Here we seek to understand the influence of microbial processing on the formation of aggregates in a structurally homogeneous microcosm, treated with two different types of organic matter - glucose and cellulose. The results demonstrated that decomposition of organic matter triggered the formation of water stable macro-aggregates and the carbon (C) that cemented the aggregates was derived primarily from microbial source. The porosity and pore connectivity of the newly formed aggregates in the glucose amended soils provided evidence of the development of physically stable aggregates rendered by the cementation process.

Original language	English (US)
Article number	114033
Journal	Geoderma
Volume	360
DOIs	https://doi.org/10.1016/j.geoderma.2019.114033
State	Published - Feb 15 2020

Bibliographical note

Funding Information:
We thank Ralph Faux, Technical Officer, School of Life and Environmental Sciences, University of Sydney, Australia for laboratory assistance during the work.

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

Aliphatic
Aromatic
Cellulose
Glucose
Porosity
X-ray tomography

ASJC Scopus subject areas

Soil Science

Access to Document

10.1016/j.geoderma.2019.114033

Cite this

@article{9fd35034bfa24cceaa18c35d47b57fc1,

title = "Microbial processing of organic matter drives stability and pore geometry of soil aggregates",

abstract = "The formation and stability of aggregates are crucial for soil function. Here we seek to understand the influence of microbial processing on the formation of aggregates in a structurally homogeneous microcosm, treated with two different types of organic matter - glucose and cellulose. The results demonstrated that decomposition of organic matter triggered the formation of water stable macro-aggregates and the carbon (C) that cemented the aggregates was derived primarily from microbial source. The porosity and pore connectivity of the newly formed aggregates in the glucose amended soils provided evidence of the development of physically stable aggregates rendered by the cementation process.",

keywords = "Aliphatic, Aromatic, Cellulose, Glucose, Porosity, X-ray tomography",

author = "Rabbi, {Sheikh M.F.} and Budiman Minasny and McBratney, {Alex B.} and Young, {Iain M.}",

note = "Funding Information: We thank Ralph Faux, Technical Officer, School of Life and Environmental Sciences, University of Sydney, Australia for laboratory assistance during the work. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = feb,

day = "15",

doi = "10.1016/j.geoderma.2019.114033",

language = "English (US)",

volume = "360",

journal = "Geoderma",

issn = "0016-7061",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Microbial processing of organic matter drives stability and pore geometry of soil aggregates

AU - Rabbi, Sheikh M.F.

AU - Minasny, Budiman

AU - McBratney, Alex B.

AU - Young, Iain M.

N1 - Funding Information: We thank Ralph Faux, Technical Officer, School of Life and Environmental Sciences, University of Sydney, Australia for laboratory assistance during the work. Publisher Copyright: © 2019 Elsevier B.V.

PY - 2020/2/15

Y1 - 2020/2/15

N2 - The formation and stability of aggregates are crucial for soil function. Here we seek to understand the influence of microbial processing on the formation of aggregates in a structurally homogeneous microcosm, treated with two different types of organic matter - glucose and cellulose. The results demonstrated that decomposition of organic matter triggered the formation of water stable macro-aggregates and the carbon (C) that cemented the aggregates was derived primarily from microbial source. The porosity and pore connectivity of the newly formed aggregates in the glucose amended soils provided evidence of the development of physically stable aggregates rendered by the cementation process.

AB - The formation and stability of aggregates are crucial for soil function. Here we seek to understand the influence of microbial processing on the formation of aggregates in a structurally homogeneous microcosm, treated with two different types of organic matter - glucose and cellulose. The results demonstrated that decomposition of organic matter triggered the formation of water stable macro-aggregates and the carbon (C) that cemented the aggregates was derived primarily from microbial source. The porosity and pore connectivity of the newly formed aggregates in the glucose amended soils provided evidence of the development of physically stable aggregates rendered by the cementation process.

KW - Aliphatic

KW - Aromatic

KW - Cellulose

KW - Glucose

KW - Porosity

KW - X-ray tomography

UR - http://www.scopus.com/inward/record.url?scp=85074455632&partnerID=8YFLogxK

U2 - 10.1016/j.geoderma.2019.114033

DO - 10.1016/j.geoderma.2019.114033

M3 - Article

AN - SCOPUS:85074455632

SN - 0016-7061

VL - 360

JO - Geoderma

JF - Geoderma

M1 - 114033

ER -

Microbial processing of organic matter drives stability and pore geometry of soil aggregates

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this