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森林是陆地生态的主体,是改善农业生态系统的骨干,要改变朝阳地区的自然面貌,恢复生态平衡,必须尽早完成绿化任务。但是建国后的1949—1979年,国家给朝阳地区造林投资5744万元;造林1910万亩,只保存623万亩,约占造林面积的1/3,平均每年保存约20万亩。不仅造林成活率低,保存率低,而且生长率也低。总起来说是绿化效率低,可说是进三步退两步,不但造成经济上的损失,而且延误了绿化时间。
The forest is the main body of terrestrial ecology and the backbone of improving agro-ecosystem. To change the natural appearance of Chaoyang and restore ecological balance, the forest must be completed as soon as possible. However, from 1949 to 1979 after the founding of the People’s Republic of China, the state invested 57.44 million yuan in afforestation in the Chaoyang area. The afforestation was 19.1 million mu, only 6.23 million mu was reserved, accounting for about 1/3 of the afforestation area and the average was about 20 million mu per year. Not only the survival rate of afforestation is low, the preservation rate is low, and the growth rate is also low. In general, greening is inefficient and can be said to be two steps back in three steps, not only causing economic losses but also delaying the greening time.