4月4日是北京市第25个义务植树日,许多市民自觉奔赴全市城乡各地,植树护林、种花种草、义务播绿,城乡处处都是植树护林的繁忙景象。与此同时,许多市民选择了另一种履行植树义务的形式——认养认建林木绿地。 April 4 is the 25th voluntary tree planting day in Beijing. Many citizens voluntarily went all over urban and rural areas throughout the city. Trees were planted and forests were planted. Flowers and grass were obliged to be sowed. Bushes and trees were everywhere in urban and rural areas. In the meantime, many citizens have opted for another form of fulfillment of tree planting obligations - the adoption of the construction of greenwood.