نوع مقاله : مقاله پژوهشی
نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Soil erosion is a global problem that seriously threatening natural resources, human welfare and even life human. Globally, there are many methods for soil conservation including biological, mechanical and bio-mechanical methods, which these methods are expensive and they are not environmental friendly. Mulching is one of the management practices to reduce the impact of raindrops on soil erosion and control surface runoff. From these, organic mulches improve soil texture and infiltration capacity and avoid from environmental pollution. Mulching also decreases crusting of the soil due to rainfall impact also reduces erosion by absorbing the kinetic energy of the raindrops. Wood mulches have been developed from wood manufacturing waste (e.g., wood strands such as Wood Straw, wood shreds or wood chips) made from burned trees or forest thinning operations, and shredded forest floor material from nearby eroded areas. Although these wood-based mulches are unlikely to harbor non-native seeds, their greater density can increase the cost of transportation to the site and aerial application as compared to straw mulch. Laboratory studies established that wood strands have greater resistance to wind displacement as compared to agricultural straw, and both wood strands and wood shreds provide equal or greater protection from erosion as compared to agricultural straw mulch at equal areal coverage rates. Foltz and Wagenbrenner (2010) reported that a 50% cover of wood shred mulch, with small (
کلیدواژهها [English]