In a sweeping analysis of drylands across Central Asia, scientists have found that natural environmental forces—particularly declining snow levels and rising temperatures—are more responsible for desertification than human activity. The study, published in the journal Catena, was led by Professor Tao Hui of the Xinjiang Institute of Ecology and Geography at the Chinese Academy of Sciences.
Using nearly 40 years of satellite data, meteorological records, and socio-economic indicators, the research team mapped how desertification has unfolded between 1982 and 2020. They applied a nonlinear Granger causality model to disentangle the impacts of climate change and human activity.
The findings are stark: “Natural factors accounted for nearly 70% of all newly desertified areas,” said Prof. Tao Hui. “In many dryland systems, snow water equivalent—the amount of water stored in snow—was the dominant ecological driver.”
Overall, 14.81% of Central Asia’s drylands showed signs of desertification during the study period. While unsustainable agriculture and overgrazing continue to degrade grasslands and arable areas, it is the shifting climate—particularly warmer winters and reduced snowmelt—that is playing the lead role in this transformation. Forests, the study notes, were primarily affected by rising temperatures rather than human encroachment.
The study is misleading by “blaming” the effect on natural processes since climate change is largely assumed to be caused by human development.
The revelation that climate is the leading culprit challenges the long-standing assumption that desertification is mainly a result of poor land use. It also complicates regional efforts to halt desert advance, which have typically focused on managing grazing and cultivation.
For countries in the Middle East, including Jordan—one of the most water-scarce nations in the world—the study serves as a climate cautionary tale. With less than 100 cubic meters of renewable water per person annually, Jordan is already facing extreme pressure on its agricultural systems. Sustainable innovations like volcanic soil enrichment may offer hope (as explored in recent efforts near Mafraq), but they must now be scaled in ways that anticipate a rapidly changing climate.
China, the factory of the world, is the world’s largest emitter of greenhouse gases, producing about 30% of global CO₂ emissions from fossil fuels and industry. By comparison, the United States emits roughly 13–14%, and the European Union around 8–9% of global emissions. Worth noting that the carbon emissions of China per capita is less than that of Americans and Europeans.
