Riparian erosion suitability model based on environmental features

A. Botero-Acosta, M. L. Chu, J. A. Guzman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Riparian erosion is one of the major causes of sediment and contaminant load to streams, degradation of riparian wildlife habitats, and land loss hazards. Because of the complex interactions between the mechanisms that govern soil detachment, assessing erosion vulnerability at the watershed scale is challenging. The main objective of this study was to develop a methodology to identify areas along the riparian zone that are susceptible to erosion. The framework was developed by integrating a physically-based watershed model MIKE-SHE, to simulate the hydrologic variables, and a habitat suitability model, MaxEnt, to quantify the probability of presence of erosion. The changes in elevation (i.e., erosion) were localized based on two LIDARs (2009 and 2012) and used as sample locations in MaxEnt. The environmental features used as constraints in the estimation were land cover, soil, slope, and the hydrologic variables. The modeling framework was evaluated in the Fort Cobb watershed, Oklahoma. Results showed that the most vulnerable areas for very high erosion (1.38 m to 4.27 m) were located at the upper riparian zones of the Cobb and Lake Sub-watersheds. Approximative ly 80% of the riparian zone has a 30% or less probability to experience "very high" erosion while the remaining 20% has a probability of up to 70%. Furthermore, the results revealed that soil type and slope were the most important predictor of riparian erosion across the watershed. Soils found to be the most prone to "very high" erosion belong to hydrologic group B and C with high sand or silt composition. By being able to identify the most vulnerable areas for stream and riparian sediment mobilization, conservation and managerial practices can be focused on areas needing the most attention and resources.

Original languageEnglish (US)
Title of host publication2016 American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE 2016
PublisherAmerican Society of Agricultural and Biological Engineers
ISBN (Electronic)9781510828759
DOIs
StatePublished - Jan 1 2016
Event2016 ASABE Annual International Meeting - Orlando, United States
Duration: Jul 17 2016Jul 20 2016

Publication series

Name2016 American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE 2016

Other

Other2016 ASABE Annual International Meeting
CountryUnited States
CityOrlando
Period7/17/167/20/16

Keywords

  • Habitat suitability model
  • MIKE SHE
  • MaxEnt
  • Riparian erosion
  • Vulnerability maps
  • Watershed modeling

ASJC Scopus subject areas

  • Bioengineering
  • Agronomy and Crop Science

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  • Cite this

    Botero-Acosta, A., Chu, M. L., & Guzman, J. A. (2016). Riparian erosion suitability model based on environmental features. In 2016 American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE 2016 (2016 American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE 2016). American Society of Agricultural and Biological Engineers. https://doi.org/10.13031/aim.20162458368