The study looked at the distribution of important nutrients in soil in arid areas. They found that iron and zinc were lacking in the soil, while other nutrients like copper and manganese were more abundant. The levels of these nutrients varied across the study area, with some showing strong spatial correlations. Iron and nickel levels decreased from south to north, while manganese and cobalt had more scattered distributions. Overall, organic matter had a big impact on the availability of these nutrients in the soil.