近几年,上海的城市绿化取得了较大的成绩,但也存在着只见绿色不见彩色的问题,缺乏色相、季相的变化。一位加拿大专家对上海园林绿化进行考察时,对近几年上海绿化的巨大成绩深表惊讶,同时也对植物色彩过于单调表示遗憾,希望上海在绿化中能重视彩叶植物的应用。 In recent years, the urban afforestation in Shanghai has made great achievements, but there are also the problems of seeing only the color of green and lack of hue and seasonal changes. When a Canadian expert inspected landscaping in Shanghai, he was deeply surprised by the huge achievements in Shanghai’s afforestation in recent years. At the same time, he also expressed regret over the monotonous plant color. He hoped that Shanghai could attach great importance to the application of colorful leafy plants in afforestation.