The effects of vegetative ash on infiltration capacity, sediment transport, and the generation of progressively bulked debris flows

Synthesising empirical results to improve predictions of post-wildfire runoff and erosion response

“…A second key issue addressed concerned the role of ash. Despite doubts (Gabet and Sternberg 2008) and a lack of experimental data, reduced infiltration and increased overland flow due to clogging of pores by ash has been a generally accepted effect (e.g. Larsen et al 2009).…”

How wildfires affect soil properties. A brief review

“…The study of the thickness of the ash layer shows the degree of soil protection in the period immediately after the fire, and how it changes in space and time (Pereira et al, 2013c). Several studies have been conducted on the effects of ash on soil properties in burned areas which consider the thickness of the ash layer as a key to understand the impact on soil fertility on the evolution of ecosystems in the post-fire (Mallik et al, 1984;Leighton-Boyce et al, 2007;Cerdà and Doerr, 2008;Gabet and Sternberg, 2008;Onda et al, 2008;Balfour, 2008, 2010;Larsen et al, 2009;Zavala et al, 2009;Pereira et al, 2013bPereira et al, , 2013c. The spatial variability of the thickness of the ash layer may be affected by factors such as soil properties and ash texture.…”

Ground Sediment Transport Model and Numerical Simulation

“…For example, Sentko came to the conclusion that the time of sand loosening from the beginning to the end is positively proportional to the thickness of the base, and negatively proportional to the permeability coefficient of Darcy [21]; in addition, influencing factors such as pressure head, fiber content, fiber length, and so on under different combinations of soil and fibers were analyzed [22]. Piping conditions and the blocking effects of soils on piping were obtained by making experiments [22][23][24]. These findings of experiments presented certain values of field applications that can be used to help avoid piping in the field.…”