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Stone wall trees in Hong Kong
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Stone wall trees in Hong Kong
Masonry wall trees refer to trees grown from openings in masonry stone retaining walls. In alleviating hazards from landslides, many slopes adjacent to main roads and developments on Hong Kong Island in Hong Kong needed to be secured. Between the 19th century and World War II, the Hong Kong Government and other contractors constructed masonry stone walls to prevent these hazards. Not until the last two decades have slopes been stabilised through cementing. In early constructed walls, opened joints between stones allowed strong species like banyans to sprout. Traffic and human activities carry on despite the growth of these plants, which further stabilise the retaining walls they are growing on. As time goes by, sprouts mature into fully developed stone wall trees.
As of today, 1275 stone wall trees are situated on 504 masonry stone retaining walls, with 110 walls in the Central and Western District, where most walls remain, with many others in Wan Chai District. A majority of these trees have lived for over a century.
According to the Conservancy Association, some notable trees are located at:
The largest tree is an over-a-century-old Chinese banyan (Ficus microcarpa), located in Forbes Street, near Forbes Street Playground. Another tree on Bonham Road near Centre Street had a height of around 20 metres, and was the tallest in the city, however it fell on 22 July 2015 in a storm.
Lung Chu Street Nullah
In Lung Chu Street Nullah, there are about 20 wall trees. More than 12 wall trees exist at the site and most of them are Chinese banyan and common red-stem fig. All of them are mature trees with a height between 3 and 11 metres high. The special one is those common red-stem fig. It is a unique phenomenon for those particular wall trees since the majority of wall trees in Hong Kong are Chinese banyan. It is the only site in Hong Kong, which have a dozen common red-stem fig trees in one location, which its buttress root adapted to the condition of the masonry walls. The nullah, therefore, is a scene with special scientific value for further study.
Comparing the trees planted in the park next to the nullah, the trees in the nullah are rich in biodiversity. Various kinds of birds could be found on those trees along the nullah, for example, yellow wagtail and white wagtail etc.
Besides, the trees around nullah formed a green canopy and functioned as a green lung for the community. For all those years, the trees benefited the community, for example, by minimizing the heat island effect.
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Stone wall trees in Hong Kong
Masonry wall trees refer to trees grown from openings in masonry stone retaining walls. In alleviating hazards from landslides, many slopes adjacent to main roads and developments on Hong Kong Island in Hong Kong needed to be secured. Between the 19th century and World War II, the Hong Kong Government and other contractors constructed masonry stone walls to prevent these hazards. Not until the last two decades have slopes been stabilised through cementing. In early constructed walls, opened joints between stones allowed strong species like banyans to sprout. Traffic and human activities carry on despite the growth of these plants, which further stabilise the retaining walls they are growing on. As time goes by, sprouts mature into fully developed stone wall trees.
As of today, 1275 stone wall trees are situated on 504 masonry stone retaining walls, with 110 walls in the Central and Western District, where most walls remain, with many others in Wan Chai District. A majority of these trees have lived for over a century.
According to the Conservancy Association, some notable trees are located at:
The largest tree is an over-a-century-old Chinese banyan (Ficus microcarpa), located in Forbes Street, near Forbes Street Playground. Another tree on Bonham Road near Centre Street had a height of around 20 metres, and was the tallest in the city, however it fell on 22 July 2015 in a storm.
Lung Chu Street Nullah
In Lung Chu Street Nullah, there are about 20 wall trees. More than 12 wall trees exist at the site and most of them are Chinese banyan and common red-stem fig. All of them are mature trees with a height between 3 and 11 metres high. The special one is those common red-stem fig. It is a unique phenomenon for those particular wall trees since the majority of wall trees in Hong Kong are Chinese banyan. It is the only site in Hong Kong, which have a dozen common red-stem fig trees in one location, which its buttress root adapted to the condition of the masonry walls. The nullah, therefore, is a scene with special scientific value for further study.
Comparing the trees planted in the park next to the nullah, the trees in the nullah are rich in biodiversity. Various kinds of birds could be found on those trees along the nullah, for example, yellow wagtail and white wagtail etc.
Besides, the trees around nullah formed a green canopy and functioned as a green lung for the community. For all those years, the trees benefited the community, for example, by minimizing the heat island effect.
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