China Turns Desert Sand into Fertile Soil with Microbial Technology

After years of effort to combat desertification, Chinese scientists have developed a method to transform desert sand into arable land in approximately ten months. The breakthrough utilizes laboratory-grown microbes to bind sand particles, creating a crust suitable for planting shrubs and grasses resilient to harsh conditions.

Microbial Crusts Stabilize Sand in Xinjiang

Trials conducted near the Taklamakan Desert in Xinjiang have demonstrated the effectiveness of this technique. The Chinese Academy of Sciences has tracked the progress of these trials, showing that the surface crusts successfully stabilized the sand within 10 to 16 months. Xinhua reported on February 25, 2026, that this process significantly shortens the traditional timeframe for desert sand fixation, which previously took a century.

Cyanobacteria: The Key Ingredient

The core of this innovation lies in the apply of cyanobacteria – an ancient, sunlight-powered bacteria. Cyanobacteria bind sand together, retain nutrients, and conserve water near the surface, creating a foundation for plant life. Lichens and moss further contribute to the crust’s stability, offering valuable lessons in China’s ongoing battle against sandstorms and the protection of infrastructure in its arid northwest regions.

From Spraying to Paste: Enhancing the Process

Initially, scientists used a cyanobacteria inoculum developed by the Shapotou Desert Research and Experiment Station, part of the Northwest Institute of Eco-Environment and Resources. Xinhua reported that this method could reduce the time needed for desert sand fixation to three years. The process involved spraying cyanobacteria onto the desert surface, where it formed crusts upon exposure to precipitation.

Further refinement led to the development of a paste-like inoculum created by mixing a cyanobacteria solution with organic matter and fine particles. Zhao Yang, deputy head of the Shapotou station, explained that this approach, similar to mixing cement, overcomes the limitations of spraying and facilitates large-scale implementation. The paste-like method resulted in crust formation within one to two years – a significant improvement over the 15 years required under natural conditions – and achieved a survival rate exceeding 60%.

Large-Scale Implementation and Future Plans

This technique is now being deployed across a substantial area within the Three-North Shelterbelt Programme, with expectations to rehabilitate between 5,300 and 6,660 hectares of desert land over the next five years. This initiative represents a significant step forward in China’s efforts to combat desertification and restore ecological balance in its arid regions.