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February 18, 2014

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Green displays facing uphill challenge

THE city government is considering providing financial support to ensure the proper maintenance of the vertical greenery displays left over from the 2010 World Expo, Xinmin Evening News reported.

According to the Shanghai Greenery Commission, more than three-quarters of the “green walls” on the former Theme Pavilion, now the World Expo Exhibition and Convention Center, have turned yellow. The 5,000-square-meter display features a variety of plants including Photinia fraseri (Red Robin) and Lonicera nitida (Maigrun), the report said.

The greenery that once flourished on the Baosteel Stage has also died away, it said. A security guard at the site said he hardly ever sees anyone watering or maintaining the displays.

Despite the benefits of vertical greenery, such as its good insulation and fire prevention properties, maintenance is technically difficult and very expensive.

As a result, developers avoid using it, the report said.

Also, some authorities fear that covering certain structures, such as bridge supports, in plants will increase the risk of structural problems.

Because there are no funds to pay for the maintenance of vertical greenery, the displays often become neglected, the commission said.

However, rules governing  supervision and maintenance are under consideration, it said.

The city government is planning to construct 400,000 square meters of vertical greenery in the city this year, according to the report.



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