The researchers studied soil moisture, salinity, and organic matter in the Manas River watershed in China. They used statistical and geostatistical methods to analyze the spatial distribution of these factors in the soil. The results showed that soil moisture levels varied across different layers, with influences from landform and crop planting. Salinity levels were higher in the east and lower in the west, with different types of salinization present. Organic matter content decreased with soil depth, showing a moderate spatial correlation. Overall, the study found distinct patterns in soil properties within the watershed.