封山、封沙,封滩育林,是恢复和扩大森林资源,加快绿化步伐,改善自然环境的一条有效的重要途径,在国际上有人称之为中国式的造林法,它与植树造林同等重要,而且具有用工少、投资低、见效快、效益大的优越性,并能形成比人工造林更为稳定的森林环境。建国以来,全区各地依靠国家和集体经济力量,对一些分布有天然疏林、散生母树或灌丛的荒山、荒沙、荒滩、通过封育保护,作出了显著成绩。封育成林的面积,要比同期的造林保存面积大得多。哲里木盟扎鲁特旗地处大兴安岭的东南坡,属罕山支脉,原是“落叶松的故乡”。三百年前这里森林茂密,到解放前夕仅仅残存1％的森林覆盖率。1956年以来国家连建五处经营林场,有计划地开展了封山育林工作,二十多年的时间,已使这个旗的次生林资 Closing the mountain, closing sand and closing the beach for afforestation is an effective and important way to restore and expand forest resources, accelerate greening and improve the natural environment. Some people in the world call it Chinese-style afforestation law, which is as important as afforestation , But also has the advantages of less labor, lower investment, quicker effect and greater benefit, and can form a more stable forest environment than artificial afforestation. Since the founding of the People’s Republic, the region has relied on the strength of the state and the collective economy for remarkable achievements in the protection and afforestation of barren hills, waste sand and waste beaches with natural sparse forests, scattered mother trees or shrubs. The area for forest closure is much larger than the area reserved for afforestation in the same period. Zheli Mu League Zhalute Qi is located in the southeast slope of Daxinganling, is a Han Shan branch, was originally “the hometown of larch.” Three hundred years ago, there was dense forest and only 1% of the forest coverage remained on the eve of liberation. Since 1956, the country has even set up five administrative forestry farms and carried out the work of closing hillsides for afforestation. In more than two decades, the secondary forestry fund