Introduction to the Quercus short-stemmed oak forest belt: This lush, large tree that blocks the sky and the sun is the Quercus short-stemmed oak forest. This is when experts from Northwest Agriculture and Forestry University conducted a field survey of tree ecological resources in Jinsi Canyon in 2007. They discovered that the Qinling area has the largest area, the oldest forest age, the highest canopy density, and the Quercus short-stemmed oak that grows in a large area. Pure forest.