Periscope

Save the shades: experts

The Lands Department and the Agriculture, Fisheries and Conservation Department both just said they would work closely together as well as with other relevant departments.
Even the government itself seems not to be virtuous. Lawmaker Choy So-yuk blamed the government for trying to prune four trees in Tai Wai in last November, which are on the Old and Valuable Trees Register, a non-legally binding list for the identification and protection of more than 500 trees on unleased government land.

Ms Choy, who is also chairwoman of Hong Kong Trees Conservation Association, said the government halted the plan after her protest. "It is ridiculous that trees can be treated this way even when they are on the register,” she said. "Who can guarantee that the trees can survive the trimming?”
Other experts, meanwhile, say more tree care is needed apart from legal protection. Lau Hing-tat, former president of the Hong Kong Institute of Landscape Architects, said the government had no departments particularly
in charge of pruning. "Pruning is a specialist expertise, but there is not enough emphasis on (proper) pruning from the government,” he said.

Certified arborist Ken So Kwok-yin, who is a senior conservation officer at Kadoorie Farm, said pruning works in government projects were usually outsourced to private contractors, and "there is no control on private companies' pruning”.
People without any professional training or qualifications can prune trees for the government, said Mr So, who is one of the 21 arborists in Hong Kong certified by the International Society of Arboriculture based in the United States.

"Many people simply claim themselves arborists after having five to 10 years' trimming experience,” he said. "It is better to have more certified arborists.” Mr So said many pruned trees in Hong Kong were "topped”, instead of being "trimmed”. In "topping”, all parts of a tree outgrowing a certain height, including all branches and leaves, are cut off. But in trimming, the tree's recovery after the trim will have to be considered.
The specialist said topping would cut off the tree's "food supply”, and that was the case for the trees in Leung King Estate. Mr So said people at the estate did not know the kind of pruning they did was damaging to the trees. "The wound is too large for them (the trees) to recover,” he said.

However, a tenant, who declined to be identified, said: "There is nothing wrong about the pruning.” The place "looks brighter now” and the branches will grow when warm season comes, she said.
Those residents who have objected to the pruning agree to tree experts' views. "The trees are dead and there is no shade…making the place even hotter,” said one resident, who did not give her name. "(The pruners) didn't listen, they just did whatever they wanted.” Both the owners' corporation and the management company of the estate declined to comment on the matter.

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Trees are said to be pruned for safety reasons, pests
problems and blocking of light.