植造林要搞“扩张”战略郝建华，李芳，张建辉近几年，我国全民义务植树取得了重大成就，森林覆盖率提高到１３．９２％。大大改善了我国的生态环境，减少了自然灾害，为国民经济的稳定发展作出了贡献。但我们还应看到我国荒山还很多，水土流失还很严重，风沙还在肆虐，沙... Planting forests to engage in “expansion” strategy Hao Jianhua, Li Fang, Zhang Jianhui In recent years, our nation’s voluntary tree planting has made significant achievements, with the forest coverage rate increased to 13.92%. Greatly improved our country’s ecological environment, reduced natural disasters and contributed to the steady development of the national economy. But we should also see a lot of barren hills in our country, soil erosion is still very serious, sand is still raging, sand ...