Integrated demonstration of comprehensive control technology for desertified land in the Qinghai Lake Basin has made breakthrough progress

Qinghai’s ecological protection and construction is the foundation of Qinghai’s province, and desertification prevention and control is an important part of Qinghai’s ecological protection and construction. The project established a "biological sand barrier + trees + shrubs + herbs + Chinese herbal plants" comprehensive desertification prevention and control experimental demonstration area, using the technology of planting oats, wheat and highland barley sand barrier, which has the characteristics of low investment, quick results and good sand fixation efficiency. The arbors, shrubs, and herbs were selected as sand-fixing plants suitable for the alpine sandy areas of Qinghai Lake. Vegetation establishment techniques such as deep planting of trees with high poles, afforestation with shrub seedlings, and direct seeding of herbaceous soil were used. The survival rate reached over 85%, and the preservation rate reached 80%. Developed wheat straw checkered sand barrier + black willow afforestation, wheat straw checkered sand barrier + golden dew plum (silver dew plum) + golden pheasant afforestation, wheat straw checkered sand barrier + Qinghai spruce + sand cypress afforestation, planting oat sand barrier + It is an engineering and plant-based comprehensive desertification control and afforestation model, including flower stick + sand cypress afforestation, planting highland barley sand barrier + Jerusalem artichoke sand fixation and other six kinds of optimized mixed trees, shrubs and grasses. Technical regulations for setting up sand barriers and technical regulations for sand fixation and afforestation for the treatment of alpine desertified land have been compiled.

　(Original title: The integrated demonstration of comprehensive control technology for desertified land in the Qinghai Lake Basin has made breakthrough progress)