I forhold til sand og støvstormer, så ser vi jo fra forskning at LNC vil hjelpe mot dette:) Nøkkelrolle
5.1.3. Reduced Erosion
Wind erosion is acknowledged as a significant soil degradation phenomenon in arid and semiarid zones. It has the potential to impede agricultural productivity, deplete nutrients and diminish soil fertility, lead to plant loss, contribute to landslide occurrences, and exacerbate air pollution, thereby negatively impacting the environment and human well-being, particularly health [34,93,94,95]. Notably, the control treatment exhibited substantially greater soil erosion compared to the nanoclay treatment. Employing nanoclay on the soil surface proved effective in fortifying the soil’s ability to mitigate wind erosion, consequently leading to a reduction in the quantity of easily erodible material [96,97]. The clay content within soil significantly influences soil aggregation, resulting in higher clay content contributing to more stable aggregates. This, in turn, can enhance the soil’s resistance against wind erosion. Research demonstrated that the effective control of wind erosion could be achieved by applying 2 gm−2 polyacrylamides to the surfaces of loam and sandy loam soils. Soils with low water content and minimal organic matter are highly prone to wind erosion, particularly during windy, dry fallow periods [98]. Nanoclay acts as a binding agent that brings together surface particles, resulting in the formation of a cohesive crust. This thin layer, generated by nanoclay, effectively enhances the soil’s ability to withstand wind forces. The nanoclay-treated surface layer of sandy soil exhibits uniformity, notable firmness, and remains crack-free upon drying, while remaining permeable to water [99]. Enhanced soil aggregate stability corresponds to a reduction in soil degradation, thereby establishing a reciprocal relationship between aggregate stability and soil degradation [96]. Nanoclay’s presence increased the soil’s volumetric water content at 300 kPa, notably enhancing water retention compared to the control. This incorporation elevated moisture storage in sandy soil. Moreover, nanoclay’s usage could potentially impact pore size distribution equilibrium and soil surface area. Its hydrophilic nature causes changes in soil properties, including increased moisture levels and the formation of micro-porosity [97].
Introducing nanoclay into soil holds significant promise for fortifying its resistance to wind erosion. Particularly, nanoclay at 2000 ppm exhibited superior wind erosion control compared to water alone. Nanoclay demonstrates a favorable capacity for shaping and maintaining aggregate structure, contributing to notable aggregate stability when introduced to soils [97]. This property plays a key role in wind erosion control via nanoclay application. The results also indicated heightened water retention in sandy soil when treated with nanoclay, compared to untreated soil. In arid landscapes, the water-holding capacities of nanoclay and its controlled release play an essential role.