The effect of land use structure on the distribution of soil nutrients in the hilly area of the Loess Plateau, China

摘要

The irrational land use is one of the main reasons for the soil erosion and nutrient loss in the loess hilly area of China. In this project, 4 types of typical land use structure of sus- tainment for about 15 years in the loess hill slope selected to study the effect of land use structure on the distribution of soil nutrients. From hill bottom to hill top, the patterns of land use type are: grassland-slope farmland-forest, slope farmland-forest, terrace-grassland- forest and slope farmland-forest-grassland.