Trees are becoming one of the most important parts of the conversation about healthier and more climate-resilient cities. Across the world, urban areas are becoming warmer, rainfall patterns are changing, and extreme weather is placing greater pressure on public spaces and infrastructure. In response, city planners are increasingly looking at trees not simply as decoration, but as essential natural infrastructure. elektrische massageliege
This shift is particularly important for rapidly growing cities such as Dhaka. New research published in 2026 provides the first comprehensive baseline assessment of Dhaka’s urban trees. The study estimates that the city has around 1.3 million trees, while tree cover remains below 11%. Researchers also identified 110 tree species across 33 families.
These findings highlight an important lesson: planting more trees matters, but choosing suitable species, protecting mature trees and caring for young trees may matter just as much.
Why Urban Trees Matter More Than Ever
Trees perform many functions at the same time. Their leaves provide shade, their roots help manage rainwater, and their canopies can reduce exposure to intense sunlight. Trees also absorb carbon dioxide and remove certain pollutants from the atmosphere.
In Dhaka, the benefits are especially relevant because the city faces heat, air pollution, waterlogging and rapid development. The 2026 urban forest assessment found that Dhaka’s trees provide an estimated $6.74 million per year in ecosystem benefits. The city’s trees also store an estimated $3.19 million worth of carbon.
Another important finding concerns rainfall. Researchers estimated that Dhaka’s urban trees intercept nearly 982,000 cubic metres of stormwater each year. This means the existing tree population already contributes to reducing the amount of rainwater reaching streets and other hard surfaces during rainfall events.
These benefits demonstrate why urban trees should be considered part of long-term city planning rather than treated as temporary beautification projects.
The New Focus: Tree Survival
For many years, tree-planting campaigns have focused primarily on the number of saplings placed in the ground. However, recent research suggests that the survival and long-term health of those trees deserve equal attention.
A 2026 study of newly planted trees in Dayton, Ohio, examined how irrigation, heat and surrounding built surfaces affected young tree establishment. Researchers monitored 640 native saplings across 20 parks and found that about half survived until the end of the growing season. Results also varied according to tree species and local conditions.
The lesson is relevant to cities everywhere: planting a tree is only the beginning.
Young trees may require water, suitable soil, protection from physical damage and appropriate maintenance. A species that performs well in one location may struggle in another because of differences in soil, temperature, rainfall, available space and surrounding buildings.
This means successful urban forestry requires a long-term approach.
Dhaka’s Tree Challenge
Dhaka’s urban forest contains considerable diversity, but the distribution of trees is uneven and some species are much more common than others. The 2026 inventory identified mango, mahogany and coconut among the city’s dominant species. More than 60% of the recorded species were classified as exotic.
Species diversity matters because relying heavily on a small number of species can create additional ecological risks. If a particular pest, disease or environmental stress affects one widely planted species, a large portion of the urban tree population may become vulnerable.
A more diverse planting strategy can help create a stronger urban ecosystem. Native species can also provide important habitat and food resources for local birds, insects and other wildlife.
However, species selection should always be based on local conditions. Factors such as mature tree size, root behaviour, water requirements, soil type, overhead infrastructure and available planting space should be considered before planting.
Bangladesh’s Large-Scale Tree Initiative
Bangladesh has placed significant attention on expanding tree cover. In July 2026, a national programme was announced to plant 250 million trees over five years, with priority given to local and environmentally suitable species. The programme is intended to support greener landscapes while strengthening forests and ecosystems.
A large planting programme can create substantial environmental benefits, but its success will depend on what happens after planting.
According to reporting on the programme, 100 million saplings are planned for coastal districts, while another 50 million are intended for degraded forest areas in regions including the Chittagong Hill Tracts, Sylhet and the central sal belt. Coastal planting is particularly significant because mangrove and other suitable vegetation can help protect vulnerable areas from erosion, cyclones and tidal impacts.
The most useful question, therefore, is not simply how many trees are planted. It is how many become healthy, mature trees capable of providing benefits for decades.
Designing Cities Around Trees
Modern urban forestry is moving toward a more strategic approach. Instead of planting wherever space happens to be available, planners can identify locations where trees can provide the greatest environmental benefits.
For example, trees may be especially valuable beside busy roads, around schools, near public transport areas, within residential neighbourhoods and around large paved spaces. Parks and institutional grounds can also provide opportunities for creating connected green areas.
Research published in 2026 has explored ways to optimize urban tree species composition so that planting decisions can respond to different local environmental needs. The approach recognizes that simply increasing the number of trees or the percentage of green coverage does not necessarily produce the best outcome. Species selection and local conditions also need to be considered.
This is an important change in thinking. A successful urban forest is not merely a collection of trees. It is a connected system designed to work with buildings, roads, drainage, public spaces and local ecosystems.
Mature Trees Are Valuable Assets
New planting receives considerable attention because it is visible and easy to measure. Yet mature trees provide benefits that young saplings cannot immediately match.
Large canopies provide substantial shade, while established root systems can influence soil and water movement. Mature trees also create habitats for birds and other organisms.
For this reason, protecting existing healthy trees should be an important part of urban planning. Removing a mature tree and replacing it with a small sapling does not create an equivalent environmental benefit overnight.
Cities therefore need policies that consider both tree planting and tree retention. Development projects can incorporate existing trees into their designs where practical, while road and utility planning can reduce unnecessary damage to established vegetation.
Caring for Trees Through a Changing Climate
Climate change is creating another challenge for urban forests. Higher temperatures and periods of drought can place significant stress on newly planted trees. At the same time, cities can intensify heat through extensive paved and built surfaces.
A 2026 urban forestry study found that the relationship between irrigation, surrounding heat and tree survival can differ among species. This supports the idea that urban planting programmes should be tailored to local conditions rather than applying one standard method everywhere.
Long on large-scale planting creates an important opportunity. With careful species selection, strong maintenance and protection of existing trees, today’s saplings could become tomorrow’s shaded streets, healthier neighbourhoods and-term maintenance may include watering during establishment, soil improvement, structural pruning, protection from physical damage and regular health monitoring.
This may require more planning and investment than a one-day planting campaign, but it can greatly improve the value generated by each planted tree.
A Greener Future Starts With Better Planning
The future of urban forestry is not simply about planting more trees. It is about planting the right trees in the right places and giving them the conditions they need to mature.
For Dhaka and other rapidly expanding cities, this could mean creating clearer tree-cover targets, increasing the use of suitable native species, protecting mature trees and directing planting toward areas where communities experience the greatest environmental pressure.
It also means measuring progress over many years. A successful programme should track survival, canopy growth, species diversity, maintenance requirements and the distribution of trees across different neighbourhoods.
Trees cannot solve every urban environmental challenge, but they can become a powerful part of a broader strategy for healthier and more resilient cities.
As cities continue to grow, the value of urban trees will likely become even more apparent. The most successful urban forests of the future will not be defined only by how many trees are planted. They will be defined by how well those trees survive, how thoughtfully they are distributed and how effectively they become part of the city’s long-term infrastructure.
For Bangladesh, the current focus on large-scale planting creates an important opportunity. With careful species selection, strong maintenance and protection of existing trees, today’s saplings could become tomorrow’s shaded streets, healthier neighbourhoods and stronger natural defenses against environmental pressures.
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