DU completes first-ever tree census, identifies over 17,000 trees

Dhaka University (DU) has completed its first-ever integrated Tree Census 2025, identifying 17,161 trees representing 277 species from 62 families across the campus.

Alongside the census, researchers have developed a comprehensive scientific database documenting the university's tree resources, including species diversity, carbon stock, biomass, health status and location-based information. The database is expected to support future afforestation initiatives, biodiversity conservation and environmental management.

The findings were unveiled at a ceremony held at the Nabab Nawab Ali Chowdhury Senate Bhaban on Thursday. The event was presided over by Prof Mohammad Zashim Uddin, director of the DU Arboretum Centre, while Vice-Chancellor Prof A B M Obaidul Islam attended as the chief guest.

According to the census, 58% of the recorded tree species are native, while 42% are exotic. In terms of the total number of trees, native species account for 54%, compared with 46% for exotic species. Among the 15 most dominant tree species on campus, five are exotic Mahogany, Debdaru, MacArthur Palm, Raintree and Teak.

The survey found that the university's trees contain approximately 9,900 metric tonnes of above-ground biomass and 2,370 metric tonnes of below-ground biomass, storing a total of 4,650 metric tonnes of carbon. Exotic species contribute 78.5% of the total biomass, while native species account for the remaining 21.5%.

Speaking at the event, Vice-Chancellor Prof A B M Obaidul Islam said the tree census had established a reliable database on the university's tree resources, which would play a significant role in future greening initiatives and environmental management.

He emphasised the importance of expanding the plantation of environmentally friendly native species, conserving biodiversity and implementing long-term plans to transform the university into a greener, more attractive and sustainable campus.

"Through planned tree plantation and proper environmental management, the university must be transformed into a campus where students, teachers and visitors can move comfortably in a clean and healthy environment," he said, urging coordinated efforts to conserve native species, increase the plantation of environmentally beneficial trees and maintain ecological balance.