Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Etats Unis → 1970 → The effect of algal-mold crusts on the hydrologic processes of infiltration, runoff, and soil erosion under simulated conditions

University of Arizona (1970)

The effect of algal-mold crusts on the hydrologic processes of infiltration, runoff, and soil erosion under simulated conditions

Faust, William Franklin

Titre : The effect of algal-mold crusts on the hydrologic processes of infiltration, runoff, and soil erosion under simulated conditions

Auteur : Faust, William Franklin,

Université de soutenance : University of Arizona

Grade : Master of Science (MS) 1970

Résumé
Studies were conducted to evaluate the effects of blue-green algae and molds growing on soil surfaces on infiltration, runoff, and suspended and settleable sediment production. Two contrasting soil types were used : a fine-textured clay of the Puna series and a coarse textured river alluvium of the Anthony series. A modified type F rainfall simulator was employed to apply simulated high and low intensity rainfall to soil surfaces encrusted with or denuded of micro-vegetation. The micro-vegetation was grown on the plot surfaces under artificial conditions. Results of the study indicate that soil type and rainfall intensity influences on infiltration and runoff are difficult to separate from micro-vegetation effects. However, significantly greater amounts of suspended sediment were carried in the runoff water from the surfaces of the denuded plots than from those encrusted with blue-green algae and molds.

Mots clés : Hydrology. ; Runoff. ; Algae. ; Soil erosion. ; Seepage.

Présentation

Version intégrale (7,31 Mb)

Page publiée le 14 juillet 2018