林木与人类有着密切的关系。对于人类居住的环境，林木起着绿化、美化和净化的作用；对于保护生态平衡，保持水土有着积极重要的作用。一亩林木相当于一支农田卫队。树木枝叶能挡住强风，减少对农作物的危害；树的根系能保持水土，树木能保持农田空气新鲜。树木能吸收有害... Trees and human beings have a close relationship. For human living environment, trees play a role in greening, beautification and purification; for the protection of ecological balance, maintain water and soil has a positive and important role. An acre of forest is equivalent to a farmland guard. Trees branches and leaves can block the strong wind, reducing the damage to crops; tree roots can maintain soil and water, trees can keep farmland fresh air. Trees can absorb harmful ...