Temporal and Spatial Variation of Episodic Wind Erosion in Unburned and Burned Semiarid Shrubland
2002; Wiley; Volume: 31; Issue: 2 Linguagem: Inglês
10.2134/jeq2002.0599
ISSN1537-2537
AutoresJeffrey Whicker, David D. Breshears, Piotr Wasiolek, Thomas B. Kirchner, Rebecca A. Tavani, D. Schoep, John Rodgers,
Tópico(s)Aeolian processes and effects
ResumoJournal of Environmental QualityVolume 31, Issue 2 p. 599-612 Landscape and Watershed Process Temporal and Spatial Variation of Episodic Wind Erosion in Unburned and Burned Semiarid Shrubland Jeffrey J. Whicker, Corresponding Author Jeffrey J. Whicker [email protected] Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Corresponding author ([email protected])Search for more papers by this authorDavid D. Breshears, David D. Breshears Environmental Dynamics and Spatial Analysis, Earth and Environmental Sciences Division, Los Alamos National Laboratory, Mail Stop J495, Los Alamos, NM, 87545Search for more papers by this authorPiotr T. Wasiolek, Piotr T. Wasiolek Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Search for more papers by this authorThomas B. Kirchner, Thomas B. Kirchner Carlsbad Environmental Monitoring and Research Center, 1400 University Drive, Carlsbad, NM, 88220Search for more papers by this authorRebecca A. Tavani, Rebecca A. Tavani Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Search for more papers by this authorDavid A. Schoep, David A. Schoep Carlsbad Environmental Monitoring and Research Center, 1400 University Drive, Carlsbad, NM, 88220Search for more papers by this authorJohn C. Rodgers, John C. Rodgers Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Search for more papers by this author Jeffrey J. Whicker, Corresponding Author Jeffrey J. Whicker [email protected] Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Corresponding author ([email protected])Search for more papers by this authorDavid D. Breshears, David D. Breshears Environmental Dynamics and Spatial Analysis, Earth and Environmental Sciences Division, Los Alamos National Laboratory, Mail Stop J495, Los Alamos, NM, 87545Search for more papers by this authorPiotr T. Wasiolek, Piotr T. Wasiolek Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Search for more papers by this authorThomas B. Kirchner, Thomas B. Kirchner Carlsbad Environmental Monitoring and Research Center, 1400 University Drive, Carlsbad, NM, 88220Search for more papers by this authorRebecca A. Tavani, Rebecca A. Tavani Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Search for more papers by this authorDavid A. Schoep, David A. Schoep Carlsbad Environmental Monitoring and Research Center, 1400 University Drive, Carlsbad, NM, 88220Search for more papers by this authorJohn C. Rodgers, John C. Rodgers Health Physics Measurements, Los Alamos National Laboratory, Mail Stop G761, Los Alamos, NM, 87545Search for more papers by this author First published: 01 March 2002 https://doi.org/10.2134/jeq2002.5990Citations: 53Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat ABSTRACT Redistribution of soil, nutrients, and contaminants is often driven by wind erosion in semiarid shrublands. Wind erosion depends on wind velocity (particularly during episodic, high-velocity winds) and on vegetation, which is generally sparse and spatially heterogeneous in semiarid ecosystems. Further, the vegetation cover can be rapidly and greatly altered due to disturbances, particularly fire. Few studies, however, have evaluated key temporal and spatial components of wind erosion with respect to (i) erosion rates on the scale of weeks as a function of episodic high-velocity winds, (ii) rates at unburned and burned sites, and (iii) within-site spatial heterogeneity in erosion. Measuring wind erosion in unburned and recently burned Chihuahuan desert shrubland, we found (i) weekly wind erosion was related more to daily peak wind velocities than to daily average velocities as consistent with our findings of a threshold wind velocity at approximately 7 m s−1; (ii) greater erodibility in burned vs. unburned shrubland as indicated by erosion thresholds, aerodynamic roughness, and near-ground soil movement; and (iii) burned shrubland lost soil from intercanopy and especially canopy patches in contrast to unburned shrubland, where soil accumulated in canopy patches. Our results are among the first to quantify post-fire wind erosion and highlight the importance of accounting for finer temporal and spatial variation in shrubland wind erosion. 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