However, investigating into the birthplace of Qin and its expanding situation as well as the development of literature in the area of Qin, we find there are no literatures 12 years before and 15 years after Qin unified China.

Au deposits occur in the low-grade metamorphic areas in Qinling region.

There have been some new views about the metallogenic geological conditions of three important types of gold deposits Baguamiao,Maanqiao and Jianchaling in Qinling region.

On the basis of the metallogenic geological background, new technologies and methods for prognosis of the three important types of gold depositsBaguamiao, Shuangwang and Jianchaling, in the Qinling region, western China are presented in this study.

Protection and construction of eco-environment in Qinling Mountainous area;

Structural Analysis and Optimal Use of Land Types in Mountainous Regions ——Taking Qinling Mountains of Shaanxi Province as an Example;

Spatial Distribution Pattern and Strategy for Water Conservation Function of Vegetation in Qinling Mountains;

Lamprophyre is widely distributed in the Qinling area.

Both the Qinling area and Yunnan-Guizhou-Guangxi contiguous area are important areas where micro- and fine-grained disseminated gold deposits are distributed.

According to the deposit which has Se element enriched of Qinling area, it has concluded the distributing characteristics and application of the rich Se deposit,as well as the forming mechanism with Se element ore-forming model.