“都市绿洲”的兴起 最近,在日本、美国的一些都市,为“混凝土丛林”带来滋润效果的“屋顶绿化”正引起环保人士的广泛关注。 据日本气象厅统计,东京都大手町的平均气温在过去的100年里上升了2.9℃,主要原因是越来越多的建筑挤掉了绿地面积,东京都23个区的地表绿化率由1972年的25％降至1995年的22％,远远达 The rise of “urban oasis” Recently, in some cities in Japan and the United States, the “roof greening” that brings a moist effect to “concrete jungle” is attracting widespread attention from environmentalists. According to statistics from the Japan Meteorological Agency, the average temperature in Otemachi, Tokyo has increased by 2.9°C over the past 100 years. The main reason is that more and more buildings have squeezed out the area of ​​green space. The rate of surface greening in 23 districts of Tokyo is determined by 1972. The 25% of the year fell to 22% in 1995, far reaching