城市树木无法应对不断变化的气候

London, trees are already struggling with hot and dry summers. Madeleine Cuff heads to Kew Gardens to hear about the impact IT IS an unseasonably warm day in September, at the end of a very long, very hot summer. Kevin Martin is sitting in the passenger seat of a golf buggy, staring at a stand of withering beech trees in the middle of Kew Gardens in south-west London. Where there should be a show of dancing green leaves, there are only wisps of brown curls amid bare branches. Martin is responsible for tending and curating the 11,000-strong tree collection at Kew. But successive heatwaves and a severe drought have been catastrophic for his wards this summer. …