Recent archaeological investigations suggest that the Middle Reaches of Hart River is an- ther cultural centre where the prehistoric burial custom of using pig-bone prevailed and these data are no less important than that from the Haidai area.

The analysis of the questions and the countermeasures of grain safety on the middle and lower reaches of Hanjiang River;

On the support of GIS technology, the author build ecological security database using conventional maps and statistical data as data resources and establish the ecological security assessment model on the basis of quantities factors and analysis, in order to assess the ecological security condition in the middle and lower reaches of Hanjiang River Basin.

The migration in the middle reaches of Yuanjiang River started as early as the warring states, and through migration from Qin and Han, South dynasty, Tang and Song to till Ming Dynasty, Han nationality established its main status in the valley basin.

Study of Liliaceae resources in Hanzhong area of Shaanxi province;

By analysis of the developmental potential of each economical animal group in Hanzhong area, we consider that some animals should be bred preferentially for flesh, pharmacy and industrial resources.

Hanzhong area has a plenty of natural resource,culture resource and particular region advantages.

Investigation and Application of Main Rice Germplasm Resources in Hanzhong Area of Shaanxi Province;