The Taklamakan Desert, one of the most arid and hostile expanses on Earth, located in China’s Xinjiang region, is no longer just a source of heat — it has quietly become something no one expected: a functioning lung — a carbon sink. A new study from UC Riverside confirms it: China’s massive reforestation campaign, known as the Great Green Wall, has transformed this harsh landscape.
In 2024, the Chinese government completed a 1,892-mile forest belt encircling the desert’s entire perimeter. The barrier, composed of billions of drought-resistant trees and shrubs, is designed to stop dunes from encroaching on farmland and reduce the dust storms that reach as far as Beijing, thousands of miles away.
The research, published in the journal Proceedings of the National Academy of Sciences, used satellite data to analyze photosynthesis through sun-induced fluorescence.
The findings show that between 2004 and 2017, the Taklamakan absorbed an average of 8.3 million metric tons of carbon dioxide per year while releasing 6.7 million. That net gain of 1.6 million metric tons per year shows that human intervention can alter the carbon cycle even in Earth’s most extreme landscapes.
King-Fai Li, an atmospheric physicist at UC Riverside, notes that while this is no tropical rainforest, the shrubland ecosystem’s ability to trap greenhouse gases still represents a real and measurable contribution to the region’s carbon balance.
How the “Place of No Return” Traps Carbon
Key to the project’s success is choosing plant species tough enough to survive in the Taklamakan — known locally as the “Sea of Death” for its shifting dunes and near-total absence of water.
But the plants may not be working alone. Separate studies suggest the desert sand itself may trap small amounts of CO2 through cycles of thermal expansion and contraction.
The Three-North Shelter Forest Program, launched in 1978, is the largest reforestation effort on the planet. By planting trees and shrubs along the fringes of the Gobi and Taklamakan deserts, China is working to stabilize a fragile ecological zone where advancing desertification has long threatened the food security and air quality of its northern provinces.
Despite the encouraging results in Xinjiang, the scientific community remains cautious about how much such efforts can mean on a global scale. Reforesting arid zones can help address local climate change and improve biodiversity, but it is no substitute for cutting fossil fuel emissions worldwide.
Even so, the Taklamakan project is yielding valuable data on how much biomass a desert can support under managed conditions.
China’s Great Green Wall remains one of the boldest experiments in environmental engineering ever attempted — and it is quietly reshaping what we thought possible in landscapes once written off as lost.
