New research could uncover right soil conditions for giant trees

It aims to improve dipterocarp growth here, will also aid forest restoration in S-E Asia

- Audrey Tan

Nature is a many-splendoured thing, but it is big and beautiful things that most often draw praise. Yet, the most eye-catching of organisms sometimes rely on the unseen to thrive.

Take for example the dipterocarps, the "ents" of South-east Asia's rainforests.

Bringing to mind the tree-like creatures in J.R.R. Tolkien's fantasy world of Middle-earth, members of this family of trees are known to be among the tallest in South-east Asia's rainforests.

As forest giants, these trees help to provide sanctuary and nesting places for birds and other species that dwell in the forest canopies.

Aided by ectomycorrhizal fungi in the soil that sheathe their roots and facilitate nutrient uptake, these formidable giants are known to reach heights of over 100m.

A new research effort led by Singapore's National Parks Board (NParks) wants to help the mighty by zooming in on the tiny.

With the aim of improving dipterocarp growth in Singapore, NParks in February 2023 launched a grant call for research proposals that focus on understanding and enhancing the biological properties of soil and how dipterocarp growth can be enhanced in forested and urban areas.

On Sept 25, NParks said it is awarding the grant call to a research team led by A*Star.

As dipterocarps are also dominant trees of the native lowland forests of South-east Asia, this study will also contribute to forest restoration efforts in the region.

Dr Subhadip Ghosh, a senior scientist in plant science and health at NParks, said: "This will strengthen the resilience of these forests and ensure that the forests continue to provide many benefits for people and the planet."

A HEALTHY FOUNDATION

Of the over 500 dipterocarp species in South-east Asia, about 36 have been recorded in Singapore.