在祖国西北、华北、东北这片约占全国陆地面积四分之一的国土上,经过八年的努力,一座绿色‘万里长城’已呈雏形。这就是‘三北’防护林体系一期工程的建设成果。这篇报道向我们记述了这一巨大工程的决策、实践和成就,并介绍了二期工程的规划。 On the land of northwestern, northwestern and northeastern China, which accounts for about a quarter of the land area of ​​the country, after eight years of hard work, a green Great Wall has taken shape. This is the result of the first phase of the “Three Norths” shelterbelt system. This report tells us the decisions, practices and achievements of this huge project and introduces the planning of the second phase of the project.