An outline of Li Buyun s theoretical system of human rights;

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;