【摘要】 利用灌木林地封山育林具有投资省、化工少、效益高、成林快的特点,形成的是多树种,多层次的混交林。更多还原

【Abstract】 There are economic investment, high effect and fast speed in establishing forest when the shrub lands are reforested in closing the land for reforestation. The mixed forests from this have abundant species and many layers.更多还原