Shanghai Pudong International Airport has been named the city’s “Garden Company” ahead of Arbor Day for its greenery coverage and ecologically friendly seashore environment. The saline-alkali soil mostly reclaimed from the sea some two decades ago is now covered by over 10 million square meters of plants, accounting for half of the busy global air hub. It is the third time the airport has been awarded the title by the city’s greenery authority since 2014, the airport authority said on Monday. It is usually difficult for a busy airport to create large green space because the trees attract birds and bird strikes could cause a catastrophe. Fallen leaves could also be blown onto runways and interrupt takeoffs and landings.