2025/05/28 by Carolina V. Giraldo, Carlos A. Bonilla · 1 voice
Earth and Planetary Sciences · Engineering · Environmental Science · #Climate change and permafrost #Landslides and related hazards #Soil and Unsaturated Flow
paper · pdf · doi:10.31545/intagr/202892
openalex publication_date 2025/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
The wildfire temperature can affect many soil properties, such as aggregate stability.The water stable aggregate (WSA) is a soil property not typically considered in soil analysis, so pedotransfer functions are an alternative for estimating it.This study provides a series of pedotransfer functions as models to predict the effect of heating on WSA using basic soil data.Soil samples were collected from 22 different sites and analyzed in the laboratory before and after being heated at 100 and 300C.These temperatures represent low-and medium-severity wildfires.Bulk density, organic matter (OM), sand, silt, and clay contents, and pH were used to estimate WSA for unheated and heated soils.The results showed no significant differences in WSA between unheated soils and those heated at 100C but a significant decrease at 300C.WSA correlated significantly with OM content and pH in unheated soils and 100C heated soils (p<0.01),but not at 300C.A non-linear model was developed to predict WSA in unheated soils, and two additional models were developed for heated soils.Finally, at 300C, the organic matter, clay content, and water-stable aggregates decreased significantly while pH increased.K e y w o r d s: bulk density,