建设节水型社会是全面实现经济社会可持续发展的要求。近年来,延庆县绿化造林中,以提高林业用水效率、增加经济效益为中心,大力发展节水林业模式,走出一条林业生态节水的新路子。一是在规划设计上,延庆林业部门采取适时适地适树的方针,大量采用根系发达,根蘖性强,生长迅速,郁闭紧密且寿命较长,能 Building a water-saving society is the requirement of achieving sustainable economic and social development in an all-round way. In recent years, Yanqing County afforestation, to improve the efficiency of forestry water use and increase economic efficiency as the center, vigorously develop the water-saving forestry model, out of a new way of forestry ecological water-saving. First, in the planning and design, the forestry department of Yanqing adopted a policy of timely and appropriate tree planting, extensive use of developed root system, strong root-tillering, rapid growth, close tolerance and longer life span,