森林是一座巨大的“绿色工厂”。它以太阳能为动力,以水和二氧化碳为原料,通过光合作用,把太阳能转化为化学能,把无机物质变为有机物质,生产出众多的,各色各样的产品。绿色钢材厂。木材是森林绿色工厂的主要产品,有“绿色金子”之称。全世界现有森林面积三十八亿公顷,木材蓄积量三千 The forest is a huge “green factory.” It uses solar energy as a driving force, water and carbon dioxide as raw materials, through photosynthesis, the solar energy into chemical energy, the inorganic matter into organic matter, producing a large variety of products. Green steel plant. Wood is the main product of forest green factory, which is called “green gold”. The world’s existing forest area of ​​3.8 billion hectares, three thousand tons of wood