Study on Forestation Density of Qinghai Spruce in Nanmenxia Forest Region;

Gap regeneration of Picea crassifolia natural forest in Qilian Mountains.;

Variations of Picea crassifolia tree-ring cell structure and their implications to past climate in eastern margin of Qaidam Basin,Northwest China;

Phenotypic Diversity of Natural Populations in Picea crassifolia in Qilian Mountains;

Research of hormone,age and position effect of hardwood cutting in Picea crassifolia Kom;

Study on grafting skill of Picea crassifolia Kom;

Chemical Control Technique for Seed Pest in Picea crassifolia kom.;

Analysis of hydrological effects from litter of Picea crassifolia forests in Qilian Mountains;

The relationship between rainfall and interception by canopy of Picea crassifolia forest;

To evaluate water conservation function of Picea Crassifolia forest in the Xishui of Qilian Mountains,interception distribution effect of 83 precipitation cases were monitored in 2006.

Investigation of Vertical Structure of Insect Community in Picea crassifolia Forest;

The forests of Picea crassifolia in Qilian Mountains are typical mountain forests in arid and semi arid area of west China, its unique hydrological roles lay a foundation for the steady development of oasis ecological economic systems in the corridor.

Through 6 years observation on Picea crassifolia stonds and analysis on precipatation features and its re distribution, it shows that: could add the horizontal precipatation and have a little influence on vertical precipatation.