How Payment for Ecosystem Services Can Work for Districts and Urban Authorities

Nature works quietly. It rarely sends invoices, never issues reminders, and does not threaten legal action when its services go unpaid. Forests purify air without demanding fees, wetlands clean water without writing contracts, and trees cool cities without presenting receipts to municipal treasurers. Yet if nature ever decided to start billing humanity, the outstanding balance would probably bankrupt many governments.

Across Uganda, ecosystems perform countless services that sustain livelihoods, agriculture, urban development, and public health, among others. Economists estimate that globally, ecosystem services are worth trillions of dollars each year. Yet because these services are largely invisible in financial accounts, they are often undervalued in decision-making. The result is predictable: ecosystems are degraded faster than they are protected.

PES Explained

This is where the concept of Payment for Ecosystem Services (PES) becomes both practical and, in many ways, revolutionary. PES recognises that ecosystems provide real economic value and proposes a simple idea, those who benefit from nature’s services should help pay those who protect them.

To understand the significance of PES, it is useful to begin with ecosystems themselves. An ecosystem is a community of living organisms interacting with their physical environment. Forests, wetlands, rivers, grasslands, lakes, and even urban green spaces all qualify as ecosystems. Within these systems, countless interactions occur between plants, animals, soil, water, and microorganisms.

From these interactions emerge ecosystem services, those benefits that humans derive from nature. These services range from the obvious to the subtle. Food, timber, and fresh water are direct products of ecosystems. Others are less visible but equally important: wetlands filtering pollutants from water, forests stabilising soils, insects pollinating crops, and vegetation regulating local climates.

In Uganda, these services are not theoretical. Wetlands alone once covered nearly 15 percent of the country’s land area in the early 1990s. Recent estimates suggest that coverage has fallen to around 13.9 percent due to drainage, agriculture, and urban expansion. This decline has consequences. When wetlands disappear, floods become more frequent, water quality declines, and communities downstream must invest more in water treatment.

Forests tell a similar story. Uganda’s forest cover declined from approximately 24 percent of land area in 1990 to over 12 percent today. Although conservation efforts are slowly stabilising this trend in some regions, the loss of forests affects rainfall patterns, biodiversity, and carbon storage. It also affects the livelihoods of communities that depend on forest resources.

Value of Trees

In cities, the story becomes even more personal. Anyone who has walked through the heat of central Kampala at midday understands the value of a tree. Urban vegetation can reduce temperatures by several degrees, absorb air pollutants, and reduce stormwater runoff. Remove those trees and the city becomes hotter, dirtier, and more prone to flooding. In other words, urban ecosystems quietly perform municipal services that would otherwise require expensive infrastructure.

Despite their enormous value, ecosystems are often treated as if they are free and limitless. Communities that conserve forests or wetlands frequently receive little direct economic benefit from the services their ecosystems provide to others. Meanwhile, those who benefit, such as downstream water users or urban populations, may never see the connection.

Correcting the Imbalance

At its core, PES is an arrangement in which beneficiaries of ecosystem services provide compensation to those who manage the ecosystems that produce those services. The concept sounds technical, but its logic is refreshingly straightforward. If a forest upstream protects a city’s water supply, it may be cheaper for the city to help pay communities to protect that forest than to construct expensive filtration plants downstream.

Globally, PES schemes have grown significantly over the past two decades. Environmental economists estimate that PES programmes worldwide generate more than 30 billion dollars annually. Countries such as Costa Rica, Mexico, and China have demonstrated that when designed carefully, PES systems can significantly reduce deforestation while supporting rural livelihoods.

Uganda has begun exploring similar opportunities, particularly at the local government level. Bugisu, Karamoja and Teso sub-regions are already benefitting from PES with support from ECOTRUST, National Planning Authority and the National Environment Management Authority (NEMA). PES issues can best be handled at districts and urban authorities because the local governments occupy a strategic position in ecosystem management. They are close enough to communities to understand local environmental dynamics, yet formal enough to establish policies, regulations, and financial mechanisms. In many ways, they are the natural brokers between ecosystem service providers and beneficiaries.

Under a PES framework, districts and urban authorities can help identify the individuals or communities responsible for protecting ecosystems. These may include farmers maintaining forest cover, communities protecting wetlands, or landowners preserving natural vegetation in watersheds. At the same time, local governments can identify beneficiaries such as urban residents, industries, tourism operators, or water utilities, who depend on these ecosystem services.

The role of the district or municipality then becomes one of connection and coordination. Local authorities can help establish payment systems, develop regulatory frameworks, and ensure that compensation reaches those providing environmental stewardship.

Uganda’s growing urban population, currently estimated at over 27 percent of the national population and rising, places increasing pressure on water sources. Watershed management offers one of the most promising avenues for PES at the local level. Protecting upstream catchments can significantly reduce the cost of water treatment for utilities and municipalities. Supporting communities to conserve forests and vegetation in these areas becomes not just an environmental decision but an economic one. One such working example is in Bulegeni located in Bulambuli Local Government. Here, with support from a number of donors, government has helped local communities in their associations to do bee keeping, grow trees, and manage food and water resources sustainably.

Wetland protection presents another opportunity. Wetlands act as natural sponges, storing water during heavy rains and releasing it gradually. They also filter pollutants and trap sediments. Studies suggest that natural wetlands can remove up to 70 percent of certain pollutants from water before it reaches rivers and lakes. Replacing these natural systems with artificial infrastructure would cost lots of money.

Urban green infrastructure is equally important. As cities expand, green spaces often disappear under concrete and steel. Yet research shows that urban trees can reduce local temperatures by two to four degrees Celsius and absorb significant quantities of carbon dioxide and particulate pollution. Encouraging landowners and developers to maintain green spaces through incentives or PES arrangements can improve urban resilience while enhancing the quality of life.

Carbon sequestration represents yet another opportunity. With growing international carbon markets and climate finance initiatives, forests and restored landscapes can generate financial returns for communities that conserve them. In this sense, a tree planted and grown in a rural district such as Kaabong may eventually help balance the carbon footprint of a company hundreds of kilometres away.

PES Challenges

Of course, establishing PES schemes is not without challenges. Clear land tenure systems, reliable monitoring mechanisms, and transparent financial arrangements are essential. Communities must trust that payments will be fair and consistent, while beneficiaries must be confident that the ecosystems they are supporting are genuinely protected.

There is also the delicate matter of human behaviour. Convincing people to protect ecosystems sometimes requires more than scientific arguments. Occasionally it also requires a little creativity. One might say that PES works best when nature finally finds a polite way of saying, “If you enjoy the service, perhaps you could contribute to the maintenance.” It is the environmental equivalent of paying for the electricity bill after enjoying the comfort of a well-lit room.

Rewards for Local Governments

For districts and urban authorities, the potential rewards are substantial. PES initiatives can generate additional revenue streams for local governments while strengthening environmental protection. Communities gain financial incentives to manage natural resources sustainably, and ecosystems receive the care they require to continue performing their invaluable services.

In the end, Payment for Ecosystem Services is not simply about money. It is about recognising that ecosystems are part of the economic foundation upon which societies are built. By linking environmental stewardship with tangible benefits, PES transforms conservation from a moral appeal into a practical investment.

Institutions such as NEMA have an important role in guiding and supporting these efforts. By promoting PES frameworks and building local capacity, they can help districts and municipalities harness ecosystem services for sustainable development. Nature may never actually send us an invoice. But if it did, the bill would be enormous. Payment for Ecosystem Services is simply humanity’s way of beginning to pay a little of what we already owe.

Mr. Lubuulwa is the Senior Public Relations Officer at NEMA.