Exploring the Importance of Urban Wetlands

Throughout history, human civilizations have always flocked to sources of water, including wetlands. More than half of the world’s population now live in urban areas, and the number is set to keep growing. As such, urban wetlands are increasingly becoming more relevant.

Wetlands and Urbanization

Wetlands are water-rich land areas that interact with bodies of water. Some examples are swamps, marshes, lakes, mangrove forests, peatlands, and river deltas.

These complex ecosystems are home to many plant and animal species. They are also natural water management systems that can filter pollutants and purify water, improving water quality. In light of climate change, wetlands’ function as natural carbon storage is also vital. Additionally, wetlands are culturally and spiritually significant to many communities worldwide, especially Indigenous Peoples.

Unfortunately, urban expansions threaten the quality and existence of wetlands, with developers itching to encroach, fill, and flatten these areas to build cities. Yet when properly preserved and sustainably managed, wetlands in urban areas have many benefits.

The benefits already mentioned still stand, and there are additional urban-specific advantages to consider. The water management function extends to flood management due to storms, heavy rainfall, and sea-level rise. Having well-preserved wetlands in urban areas can also improve air quality and mitigate urban heat island.

Economically, they can be a source of livelihood. This can come from sustainably harvesting its rich biodiversity or providing recreational, social, and educational functions through eco-tourism. Furthermore, urban wetlands act as blue-green infrastructure, enhancing the physical and mental wellbeing of city dwellers by bringing nature closer to them.

Wetland City Accreditation

Globally, the conversation on wetlands is gradually picking up pace. In 1971, the Convention on Wetlands became the first intergovernmental treaty on the topic. Recognizing the importance of urban areas in wetland conservation, the Convention later launched the Wetland City Accreditation scheme. Beginning in 2018, the list of Accredited Cities has reached 74 in 2025, including Balanga in the Philippines, Nagoya in Japan, Kigali in Rwanda, Saint Omer in France, and Valdivia in Chile.

“These cities have demonstrated strong commitment to wetland conservation through policies, projects, and community engagement. They have integrated wetlands into their urban planning, protected and restored wetland ecosystems, and raised awareness about the importance of wetlands,” wrote Ramsar Secretary General Musonda Mumba.

Toward Sustainable Urban Wetlands

As mentioned above, wetland-friendly urban planning is an effective strategy. This includes integrating constructed and natural wetlands into the urban landscape using biophilic design principles, restoring degraded wetlands, and creating plans for self-sustaining urban wetlands.

Furthermore, strong governance frameworks are crucially needed. Laws, regulations, and policies that protect wetland areas and encourage sustainable practices are the backbone of sustainable urban wetland management. Beyond that, involving the community in the creation, care, and management of urban wetlands can foster a sense of stewardship and ensure long-term sustainability that benefits people and the planet.

Nazalea Kusuma

Editor at Green Network Asia | Website | + posts

Naz is the Manager for International Editorial at Green Network Asia. She once studied Urban and Regional Planning and has lived in multiple cities across Southeast Asia. This personal experience has exposed her to diverse peoples & cultures and enriched her perspectives. Naz is an experienced and passionate writer, editor, translator, and creative designer with a decade worth of portfolio.