Combining infiltration holes and level ditches to enhance the soil water and nutrient pools for semi-arid slope shrubland revegetation.

Active vegetation restoration has been proposed as an effective approach for restoring degraded ecosystems. Soil water and nutrient deficits hinder slope revegetation in arid and semi-arid areas. However, few studies have discussed rainfall runoff utilization and soil nutrient conservation within the context of slope vegetation restoration.

Effect of three artificial aging techniques on physicochemical properties and Pb adsorption capacities of different biochars.

Biochar is beneficial for soil amendment, but further research is still required on changes in its physicochemical properties during aging, especially in oxygen-containing functional groups and associated adsorption behaviors. Here, we used two different biochars, apple tree branch biochar and maize stalk biochar, and simulated the aging process by using freeze-thaw cycles, dry-wet cycles, and chemical oxidation methods. We investigated the changes in the physicochemical properties and Pb adsorption behavior of the biochars before and after aging treatments.