Studies on decomposing of litters and characteristic of nutritious elements in different were carried out in Inner Mongolia Huangfuchuan Watershed. The results showed that the nutritious elements in Populus simonii

Pinus tabulaeform leaf and Herbage decreased accompanied with the rising of weight loss rate. A fraction of litters being returned to the soil

led to the increase of nutritious elements in the corresponding soil horizon. The decomposing of litters play an important role in the respect of recovering

supplement and improvement of soil fertility.