Soil Amended With Organic Matter Increases Fluvial Erosion Resistance of Cohesive Streambank Soil

Fluvial erosion of cohesive soil is mediated by interactions between soil physical, biological, and chemical characteristics such as soil aggregate stability and extracellular polymeric substances (EPS). While labile organic matter (OM) stimulates microbial EPS production and significantly improves...

Full description

Saved in:
Bibliographic Details
Published in:Journal of geophysical research. Biogeosciences 2022-06, Vol.127 (6), p.n/a
Main Authors: Smith, D. J., Snead, M., Thompson, T. M.
Format: Article
Language:English
Subjects:
aggregate stability
Aggregates
Agricultural land
Bank stabilization
Carbohydrates
Cohesion
Cohesive soils
Diameters
Erosion control
Erosion rates
Erosion resistance
extracellular polymeric substances
Extracellular polymers
Farm buildings
flume
Flumes
labile organic matter
Loam soils
Microorganisms
Organic compounds
Organic matter
Organic soils
Riverbanks
Slaking
Slope stability
Soil aggregates
Soil chemistry
soil erodibility coefficient
Soil erosion
Soil improvement
Soil resistance
Soil stability
Soil water
Stream banks
Stream erosion
streambank fluvial erosion
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Fluvial erosion of cohesive soil is mediated by interactions between soil physical, biological, and chemical characteristics such as soil aggregate stability and extracellular polymeric substances (EPS). While labile organic matter (OM) stimulates microbial EPS production and significantly improves soil aggregate stability in agricultural soils, these interactions remain unexplored in streambank soils. The study goal was to quantify the impact of OM on aggregate stability, EPS, and fluvial erosion rates of cohesive streambank soil. Increasing amounts of 1‐mm sieved dry grass were incorporated at rates of 0, 1, and 4 g per 100 g of 2‐mm sieved silt‐loam soil (treatments T0, T1, and T4, respectively). Samples (eight replicates per treatment) were matured in a greenhouse for 50 days prior to flume erosion testing. EPS carbohydrates were significantly (p 
ISSN:2169-8953
2169-8961
DOI:10.1029/2021JG006723