Experts urge stronger planning and resilient species to protect residents, property
PETALING JAYA: Urban biodiversity is increasingly under threat, as numerous city trees, which are often propagated from cuttings rather than seeds, can be easily uprooted during storms, according to experts.
They warned that prioritising aesthetics over resilience and losing old-growth hardwood species could weaken urban ecosystems and diminish habitats for birds, insects, and even wild orchids.
Plant biodiversity and conservation expert Prof Dr Jamilah Mohd Salim said most urban trees are propagated from cuttings, which means they lack the deep taproots that help anchor them firmly in the ground.
"These trees are more prone to uprooting following bad weather, while soil texture and stability are also key factors, as they can be easily affected by underground water and surface runoff, reducing the trees' stability," she said.
Prof Jamilah said Malaysia's native tree species offered a wealth of natural resilience, especially hardwoods that could better withstand strong winds.
"As a tropical country, Malaysia is rich with slow-growing species that have high wood durability.
"This should be prioritised for urban planting," she said.
"Unfortunately, urban trees are often chosen for their aesthetic appeal rather than their long-term stability."
Prof Jamilah added that regular assessments by certified arborists are essential to prevent hazards from diseased or damaged trees.
"Urban tree health should be evaluated over time to ensure they are free from mechanical damage or rot, which can pose risks to public safety," she said.
The loss of large, mature trees, she warned, could have cascading ecological consequences.
"Old-growth trees are treasures that support diverse habitats for birds, insects, and even epiphytes, such as wild orchids.
"Local authorities should maintain proper records and engage certified arborists in tree planting and management," she added.
Echoing similar concerns, environmental biologist Prof Dr Ahmad Ismail stressed that many tree-related accidents could be prevented through better planning and monitoring.
"Maintenance is crucial.
"We need skilled staff to monitor tree health and determine which species are suitable for specific locations, such as slopes, riverbanks or hilly areas.
"Good planning before trees are planted - including wind patterns and proximity to buildings - is critical," he said.
Prof Ahmad also called for local councils to work closely with universities to strengthen monitoring systems and enhance safety.
"Current maintenance and inspection practices are inadequate.
"Systematic monitoring by skilled personnel is essential, and local authorities should collaborate with nearby universities.
"This partnership could involve students as part of their educational curriculum to bolster this initiative," he said.
He also urged urban planners to integrate natural elements early in development projects to align with environmental dynamics.
"When planning new urban areas or town expansions, we must consider the ecosystem's natural flow, such as water, wind and conservation needs, so that we don't go against nature's movements or disrupt socioeconomic activities," he said.
Following the recent thunderstorms in Kuala Lumpur, numerous incidents of falling trees were reported across the city.
Tragically, a man lost his life in one of these incidents near Hartamas Regency, while a woman suffered injuries in Kepong.
Additionally, these occurrences led to significant traffic disruptions.