Desertification and drought have become one of today's greatest environmental threats, with direct consequences for the lives, economies, and stability of communities around the world. These processes not only lead to the loss of soil fertility and the reduction of water resources, but also threaten the food security and quality of life of millions of people. Their progress is a cause for urgent concern and is at the center of international debate, especially every June 17th, the day on which the World Day to Combat Desertification and Drought is commemorated.
Land degradation is advancing rapidly, with more than 40% of the Earth's land surface affected and with lasting effects on the economy, biodiversity, and habitability of vast regions. According to international organizations such as the UN and FAO, there are areas where desertification has led to forced migration, crop failure, and lack of access to drinking water, a situation that is expected to worsen in the coming decades if effective measures are not taken to reverse the trend.
Factors and consequences of soil degradation
Desertification is not an inevitable natural phenomenon, but rather the result of a combination of human actions and climate change. The abuse of land for intensive agricultural production, deforestation, overgrazing, land burning, and poor water management are direct causes that exacerbate this process. Climate change intensifies the lack of rainfall and the occurrence of extreme events, reducing the organic carbon content of soils, vital for retaining nutrients and water, and making the natural recovery of affected ecosystems increasingly difficult.
Spain and other Mediterranean countries are among the territories most vulnerable to desertification and drought. In Spain, recent studies warn of the critical loss of organic carbon in Mediterranean coastal soils. This, combined with decreased rainfall and rising temperatures, calls into question the soil's ability to respond to extreme events. This reality is similar in many regions, where soil degradation translates into lower agricultural production, risks to biodiversity, and rural-to-urban migration.
Water, a scarce resource, becomes the most evident indicator of territorial degradation. In places where desertification is advancing, the disappearance of springs, the reduction of water flows, and the loss of native vegetation contribute to a vicious cycle of scarcity and environmental deterioration. In Chile, for example, after more than a decade of "megadrought," the majority of the country is suffering from some degree of drought, and a quarter faces progressive desertification.
Ecological, social and economic loss: examples of global impact
Various countries around the world are experiencing these challenges directly and acutely. In Colombia, 30% of the soil is already degraded and 40% is vulnerable to salinization, affecting millions of families dependent on agriculture. The Yucatán region (Mexico) also shows clear symptoms: more frequent droughts, water shortages, rural displacement, and loss of productive capacity.
In South Africa, community-based land restoration and sustainable management projects are being promoted, bringing together farmers, authorities, and local communities to strengthen water security and build resilience to drought. These experiences emphasize the urgent need to restore degraded soils, improve water infrastructure, and redefine agricultural practices to make them more sustainable.
On the other hand, large-scale initiatives such as the CEME1 project in the Atacama Desert (Chile) demonstrate that the development of renewable energy can be aligned with the fight against desertification, contributing both to job creation and to the reduction of polluting emissions and responsible land use.
Responses and solutions to desertification and drought
Restoring the earth is emerging as one of the key environmental challenges on the global agenda. The current motto, "Restore the Earth. Create Opportunities," is not just a slogan, but an urgent invitation to action on all fronts: political management, community action, scientific innovation, and changing individual habits.
Restoration efforts include reforestation with native species, soil restoration through organic fertilizers and sustainable agricultural practices, the valorization of traditional knowledge, and the modernization of infrastructure for efficient water use. Collaboration between governments, farmers, scientists, and citizens is essential to reverse this trend, as is public and private investment to finance restoration projects and new technologies tailored to each region. Efficient water management is also fundamental in these strategies.
International institutions and national governments have established specific programs to mitigate and reverse desertification and drought. Spain, Colombia, and Chile, for example, have national action policies, developed sustainable management plans, and made efforts to restore critical areas, always with a focus on social inclusion and active community participation.
The role of society and education in prevention
Combating desertification and drought depends not only on large-scale policies or investments, but also on the sum of small individual and collective actions. Responsible water use, waste reduction, tree planting, preferring local products, and focusing on sustainable agricultural and livestock practices are concrete steps toward prevention. Promoting environmental education and participating in local environmental restoration initiatives are essential tools for building community resilience in the face of environmental change.
Desertification and drought are interrelated phenomena, accelerated by human pressure and climate change, but also reversible if society acts with awareness and determination. International examples, scientific advances, and the commitment of various sectors show that it is still possible to restore degraded lands and ensure a sustainable future for future generations.
