The relationship between land and water use has become central to the global debate on sustainability and development, especially in the context of climate change and increasing population pressure. The health of these resources is crucial for food security, the economy, and the stability of millions of people worldwide.
Today, international organizations, national governments, and scientists are warning about the progressive degradation of the land and the scarcity of fresh water . These problems not only hinder agricultural production and access to food, but also threaten biodiversity and exacerbate social inequalities, leading to migration and conflict in various regions.
Restoring lands: an imperative for sustainability and peace
It is estimated that approximately 40% of the planet's land shows some degree of degradation . This situation has a direct impact on the quality and quantity of available water, as well as reducing soil fertility and its capacity to function as a carbon sink, which is key to mitigating global warming.
The combined effects of poor soil management, deforestation, drought, and water overexploitation represent significant economic losses and exacerbate instability in vulnerable regions. Investing in land restoration and water conservation yields not only environmental but also social and economic benefits: every euro or dollar invested in this area translates into multiple returns, such as improvements in ecosystem services, increased resilience to extreme events, and the creation of sustainable employment.
In countries like Colombia, restoration projects include the reforestation of vast areas, the expansion of agroforestry systems, and improved watershed management. These initiatives aim to restore the soil's capacity to retain water, sustain agricultural production, and protect the livelihoods of rural communities.
It is essential that these efforts be sustainable in the long term through the coordinated participation of governments, the private sector, and civil society . It is also crucial to make investments that modernize agriculture, promote best practices, and ensure ecosystem recovery.
The land-water nexus and food security in a more arid world
The advance of aridity, documented in numerous studies, shows that more than three-quarters of the planet has experienced drier years in recent decades. This trend translates into less water available for both crops and human consumption, increasing the pressure on agricultural systems.
Without sufficient water, agricultural production becomes increasingly expensive and vulnerable, exacerbating rural poverty and driving migration from rural areas to cities. Furthermore, the deterioration of vegetation accelerates the loss of fertile soil and contributes to desertification , hindering recovery from the damage.
The balance between the rational use of land and the efficient management of water is crucial to ensuring food security, the well-being of rural communities, and the protection of ecosystems. Without addressing both aspects together, it is difficult to maintain resilience to droughts, social stability, and sustainable development.
Impact of the energy transition on resource use: the Middle East and North Africa as an example
The transition to renewable energy, while offering opportunities to reduce emissions and diversify economies, has generated new disputes and challenges related to access to and use of land and water . In regions such as the Middle East and North Africa , where water scarcity and a heavy reliance on hydrocarbons already exist, the adoption of alternative energy models creates additional tensions.
Countries that have traditionally based their economies on oil and gas exports face the need to reinvent themselves, investing in clean energy sources that, in turn, require large areas and significant quantities of water to operate. Others, such as Morocco, have promoted the development of clean energy, but they too face challenges related to the sustainable use of natural resources.
Experts warn that the expansion of energy infrastructure can lead to conflicts over the use of agricultural land, damage to ecosystems, and competition for water in already scarce regions. Therefore, integrated planning of land use and water resource management is essential to prevent further environmental degradation and economic inequalities.
Research and innovation: keys to halting degradation and ensuring resources
In places like the Mediterranean basin, recent scientific analyses highlight the critical loss of organic carbon in soils , which reduces their capacity to retain water, store nutrients, and absorb CO₂. Degraded soils not only lose fertility but also contribute to the disappearance of springs and the reduction of stable watercourses.
This process of soil degradation and water scarcity is exacerbated by population concentration in vulnerable areas, pressure from intensive agriculture, and seasonal tourism. Although extensive research on these problems exists in Spain and other countries, large-scale solutions remain insufficient.
Practices such as hydrological and forest restoration, the recovery of traditional agricultural techniques, and the promotion of more sustainable land use appear to be promising strategies for curbing desertification and protecting access to water.
The relationship between land and water use defines the present and future of entire communities, requires coordinated responses and innovation, and compels all sectors to rethink how we cultivate, inhabit, and manage our natural environments. Only joint management, based on restoration, adaptation, and equity, will allow us to maintain natural wealth and the well-being of future generations.
