The researchers analyzed the distribution of nitrogen and phosphorus in purple soil in a city in China. They used geostatistics and GIS to study the soil nutrients. Total nitrogen and available nitrogen had a normal distribution, while available phosphorus and total phosphorus had a lognormal distribution. The total nitrogen showed a pure nugget effect, while the others were correlated within a spatial range. The results suggest that the soil nutrients vary spatially and could be helpful for precision fertilization and assessing pollution in agricultural lands.