Kenya's Forests Are Disappearing Faster Than Ever. Can We Still Turn Things Around?

The strange thing about deforestation is that it rarely feels urgent while it's happening. A few trees are removed here, another section of land is cleared there, and life goes on. By the time the loss becomes impossible to ignore, it has already become part of the landscape. Looking back is often when we realise how much disappeared without us noticing.

That is the reality Kenya is beginning to face. Forests across the country continue to disappear, taking with them far more than trees. They protect our water catchments, regulate temperatures, reduce soil erosion, support wildlife, and keep entire ecosystems in balance. Yet despite their importance, deforestation continues to threaten some of Kenya's most important natural landscapes. That reality becomes clearer in Nairobi. For a city of its size, it has managed to hold on to something many capitals lost long ago. Trees still line many of its streets, birds can still be heard above the traffic, and green spaces continue to offer a break from the pace of urban life. Drive through Karen, Gigiri, Muthaiga, or parts of Westlands, and it's easy to see why Nairobi earned the name The Green City in the Sun. Places like Karura Forest, the Nairobi Arboretum, and City Park aren't just parks on a map. They shape the character of the city in ways that are easy to take for granted.

Maybe that's why the changes feel so noticeable. You don't need statistics to tell you something is different. You notice it while walking to a bus stop with nowhere to escape the afternoon sun. You notice it when roads that once felt shaded now seem exposed from one end to the other. The air feels warmer, the city seems to hold onto heat for longer, and familiar places no longer feel quite the same. None of these changes happen overnight, which makes them easy to dismiss, but together they begin to change how the city looks and feels. If that continues, Nairobi risks losing one of the qualities that has always made it stand apart.

Watching trees being cut down in Karura Forest only reinforced that feeling. My mind immediately went to what those trees had survived: decades of changing seasons, years of steady growth, and the efforts of countless people who fought to protect that forest, only for them to end up on the ground within hours. I understand there are explanations for why the work was being carried out, but it doesn't stop me from wondering where the line is drawn. If tree cutting can happen inside one of Nairobi's best-known protected forests, what does that mean for the green spaces that receive far less attention? We often think of forests as permanent simply because they've always been there. The truth is they're only permanent if people continue choosing to protect them.

Deforestation is often reduced to the simple act of cutting down trees, but the reality is far more complex than that. A forest is more than a collection of trees growing in the same place. It is a living system that has taken centuries to develop, where every tree, plant, bird, insect, and animal plays a role in keeping the ecosystem alive. When an indigenous forest is cleared, what disappears cannot simply be measured by the number of trees that were cut down. Entire habitats are destroyed, wildlife is displaced, water catchments are weakened, and natural processes that have existed for generations are disrupted. Planting new seedlings is important, but they cannot immediately replace everything that was lost.

The reasons behind deforestation are complex. As Kenya's population continues to grow, so does the demand for land. Forests are cleared to create space for homes, roads, schools, shopping centres, and other developments that support expanding communities. Agriculture adds another layer to the problem. More land is needed to grow food and raise livestock, and in many parts of the country that expansion comes at the expense of natural forests. For countless families, farming is not simply an occupation but a necessity, making the balance between conservation and development increasingly difficult to achieve.

The demand for energy continues to place even more pressure on Kenya's forests. Firewood and charcoal remain the primary source of cooking fuel for millions of households, particularly in rural areas where cleaner alternatives are either unavailable or too expensive. Charcoal production provides income for many families, but when trees are harvested faster than forests can regenerate, the long-term consequences become impossible to ignore. Illegal logging only adds to the problem. Despite stronger enforcement and growing public awareness, mature indigenous trees continue to be targeted for their commercial value, leaving behind damaged ecosystems that may take generations to recover.

Climate change has made an already difficult situation even more challenging. Longer dry seasons weaken forests, making them more vulnerable to disease, pests, and wildfires, while unpredictable rainfall makes natural regeneration slower and less reliable. At the same time, every forest that disappears reduces nature's ability to absorb carbon dioxide, creating a cycle where deforestation and climate change continue to make each other worse. What begins with the loss of a forest rarely ends there. It gradually affects water security, agriculture, biodiversity, and the resilience of entire communities.

Some forests illustrate the consequences of deforestation more clearly than others, and few are as important to Kenya as the Mau Forest Complex. As the country's largest indigenous forest, the Mau is often described as one of Kenya's most important water towers, and for good reason. Rivers that begin there supply water to millions of people, support agriculture, generate hydroelectric power, and sustain ecosystems far beyond the forest itself. The Mara River, famous for carrying the Great Migration through the Maasai Mara, is one of the many rivers that depend on the health of the Mau. When the forest suffers, the effects extend far beyond its boundaries.

The Mau is not alone. Mount Kenya's forests provide water to communities across central Kenya while supporting an extraordinary variety of wildlife. The Aberdare Forest plays a similar role, feeding rivers that eventually reach Nairobi and contributing to the country's hydroelectric power supply. Along the coast, Arabuko-Sokoke remains East Africa's largest surviving coastal forest, protecting rare birds, mammals, butterflies, and plant species found almost nowhere else. In western Kenya, the Cherangany Hills continue to face pressure from encroachment despite being one of the country's most important water catchments. Each of these forests tells a different story, but they all face the same question: how much can they lose before the damage becomes impossible to reverse?

The consequences reach much further than the forests themselves. Rivers that once flowed throughout the year become less reliable, farmers struggle with changing rainfall patterns, wildlife loses the habitats it depends on, and communities become increasingly vulnerable to floods and prolonged droughts. Tourism is affected too. Kenya's reputation has always been built on thriving natural landscapes, but those landscapes depend on healthy forests just as much as they depend on open savannahs. Every forest that disappears weakens part of the natural foundation that supports the country's wildlife, tourism industry, and millions of livelihoods.

There are reasons to remain hopeful. Across the country, communities, conservation organisations, and ordinary citizens continue to restore degraded landscapes and protect what remains. Tree-planting campaigns have encouraged more people to take part in conservation than ever before, and growing public awareness has made environmental issues impossible to ignore. But planting trees and cutting down mature ones at the same time simply doesn't add up. Every tree planted is a step in the right direction, but that progress is undermined when trees that have stood for decades continue to disappear. A seedling cannot replace what a mature tree already provides. It cannot immediately cool the surrounding air, store the same amount of carbon, stabilise the soil, or support the countless birds, insects, and other wildlife that depend on it. These are benefits that develop over many years, not overnight. The conversation around conservation shouldn't be driven by how many seedlings go into the ground, but by how many mature trees remain standing. Planting is about investing in the future, while protecting existing forests is about preserving what we already have. One should never come at the expense of the other.

Wangari Maathai understood this long before climate change and deforestation became part of everyday conversation. She recognised that protecting forests was never just about trees. It was about safeguarding water, livelihoods, biodiversity, and the future of generations that would come after us. Through the Green Belt Movement, she inspired communities across Kenya to plant millions of trees while reminding the country that conservation begins with protecting what already exists. Her determination to defend places like Karura Forest came at a personal cost, yet she refused to give up because she understood that once a forest is lost, recovering it is never as simple as planting another tree in its place.

Perhaps that is the lesson we should carry forward. The forests we still have today did not survive by accident. They survived because people chose to protect them. The choices we make now will determine whether future generations inherit forests that are alive and thriving, or stories about places that once existed.