用木材生产的产品种类很多,但大致分为3种,其中最主要的是针叶材制品,通常用做建筑结构材;阔叶材的用量远低于针叶材,主要用来生产地板、家具和房屋的精装修产品;第3种用途是造纸,但美国新闻纸的年消费量已经从2007年的800万t减少到了2011年的400万t,美国其它纸制品的消费量也已从8000 There are many types of products produced from wood, but broadly divided into three kinds, of which the most important is softwood products, which are usually used as building structural materials; the usage of hardwood is much lower than that of softwood, mainly for the production of flooring, Furniture and houses; the third purpose is papermaking, but the annual consumption of newsprint in the United States has been reduced from 8 million tons in 2007 to 4 million tons in 2011. The consumption of other paper products in the United States has also dropped from 8,000