封沙育林　成效显著娄明德根据“三北”防护林体系建设工程的要求，自１９８０年开始，甘肃省酒泉地区实行封滩封沙育林。１５年来，全区共封育保护沙生植被２４８万亩，其中已封育成林面积１３６．５万亩，是解放４５年来人工造林累积保存面积的２倍；封育以胡杨为主的乔... Sealing and afforestation remarkable results Lou Mingde According to the requirements of the “Three Norths” shelterbelt construction project, since 1980, the Jiuquan area of ​​Gansu Province has implemented sealing beach and afforestation. Over the past 15 years, a total area of ​​2.48 million mu of sand plantations has been sealed and protected, of which 1.365 million mu have been sealed off, which is twice as large as that of artificial afforestation in the 45 years since liberation. ..