Abstract:

China faces severe desertification challenges， which significantly threaten ecological security and socio-economic sustainability. In response to the issues of the sand-fixing protection system formed along the Baotou-Lanzhou Railway in the 1950s （Shapotou Model 1.0）， including the high cost and low efficiency of manual mechanical sand barriers， the slow growth and instability of sand-fixing plants， excessive water consumption in early stages， and the slow formation of biocrusts， our team developed the sand-fixing technology system of synergetic weaving sand barrier and artificial biocrusts （Shapotou Model 2.0） through long-term research and demonstration. The scientific connotation of this model is “Weaving sand barriers， Water-based replanting， Synergetic effects" which includes four core technologies： windbreak fences and large-grid high-standing sand barriers， mechanized weaving technology of grass grid sand barriers， sand-fixing plant planting technology in arid sand areas， and rapid propagation and sand-fixing technology of artificial biocrusts. This model has been applied and demonstrated in areas such as the eastern edge of the Kumtag Desert， the edge of the Badain Jaran Desert， and the interior of the Tengger Desert along transportation lines， have shown promising results. The model is applicable to northern China's sandy areas and the Three-North Shelterbelt Program's key regions， offering potential for ecosystem restoration in desertified areas.

Key words: sand control and desertification prevention, technology system, typical cases, promotion potential