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Estimation of wind soil erosion in a semiarid region of Mexico
  • María de Jesús Guevara-Macías,
  • Noel Carbajal,
  • Luis Pineda-Martinez
María de Jesús Guevara-Macías
Instituto Potosino de Investigación Científica y Tecnológica AC
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Noel Carbajal
Instituto Potosino de Investigación Científica y Tecnológica AC
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Luis Pineda-Martinez
Universidad Autonoma de Zacatecas
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Abstract

Land degradation is a global problem. One of the main factors of this degradation is intense winds in the world’s arid and semi-arid regions. The wind acts on soils without vegetation cover in increasingly large regions. The impact of dust storms is considerable, from massive soil deterioration to health problems. In the arid regions of northern and central Mexico, the problem of changing land use from grasslands and forests to rainfed agriculture has increased notably in recent decades. Recurring dust storms due to winds associated with the passage of cold fronts have become a severe environmental problem. The Weather Research and Forecasting Model (WRF-Chem) was applied to analyze dust storms that occur mainly during the winter. An analysis was performed for wind speed data in the period from October 2005 to April 2018. It revealed that about 20 events per year exceeded a threshold erosion speed of 9 m/s. Fifteen events with the potential to generate dust storms were selected. The total amount of dust emitted was added together, and an average dust storm was calculated. Since the massive land-use change began approximately 50 years ago, a total erosion effect was estimated for this period. The characterization of eight soil samples revealed the texture of fine silty sands with low clay content and low organic content due to the mechanical processes of removing the finest fraction. Comparison between observed and modeled dust storm events showed good agreement.

Peer review status:UNDER REVIEW

16 Dec 2020Submitted to Land Degradation & Development
18 Dec 2020Submission Checks Completed
18 Dec 2020Assigned to Editor
25 Dec 2020Reviewer(s) Assigned
04 Feb 2021Review(s) Completed, Editorial Evaluation Pending
15 Feb 2021Editorial Decision: Revise Minor
17 Mar 20211st Revision Received
19 Mar 2021Submission Checks Completed
19 Mar 2021Assigned to Editor
20 May 2021Review(s) Completed, Editorial Evaluation Pending