100
Paris is aiming to add this many hectares of vertical gardens and roofs by 2020, with a third dedicated to urban agriculture.
巴黎計劃到2020年時全城增加100公頃的垂直花園及屋頂花園,其中三分之一用於城市農耕。
Paris is aiming to add this many hectares of vertical gardens and roofs by 2020, with a third dedicated to urban agriculture.
巴黎計劃到2020年時全城增加100公頃的垂直花園及屋頂花園,其中三分之一用於城市農耕。