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位于黄河中游的和林格尔县,山川蜿蜒,沟壑纵横,植被稀少,是一个水土流失重点地区。全县丘陵山地面积占77.7％,有近50％的土地水蚀严重,最大侵蚀模数达10000吨/平方公里。长期以来,水土流失加上风蚀沙化,给农牧业生产带来严重危胁。客观现实要求综合治理穷山恶水,调节生态平衡,改善山区人民的生产和生活条件。开展工程造林是在经验教训中总结出来的成功之路。我县建国后开始植树造林,到1971年底,有林面积增加到36.8万亩。这28年所造的林木是造的多,活的少,成林的更少。保存率仅25％,森林覆盖率只由3.7％提高到7.2％。究其原因:第一,50年代后期至60年代前期,毁林开荒,以粮为纲的生产战略,使本来贫乏的森林资源遭受了严重破坏。第二、长期以来营林工作粗放,片面追求造林
Located in the middle reaches of the Yellow River and Helinger County, meandering mountains, ravines, vegetation is scarce, is a key area of soil and water loss. The county hilly mountain area accounted for 77.7%, nearly 50% of the serious water erosion, the maximum erosion modulus of 10000 tons / square kilometers. For a long time, soil erosion combined with wind erosion and desertification have brought serious threats to the production of agriculture and animal husbandry. The objective reality calls for the comprehensive management of poor hills and bad water, regulating the ecological balance and improving the production and living conditions of the people in mountainous areas. Carrying out project afforestation is a successful way summarized in experience and lessons. After the founding of our county, afforestation began. By the end of 1971, the forest area had increased to 368,000 mu. The trees made in these 28 years are made more, live less and have fewer forests. Save only 25%, forest coverage increased from 3.7% to 7.2%. The reasons are as follows: First, from the late 1950s to the early 1960s, the strategy of deforestation and land reclamation and taking grain as the key link has seriously devastated the already poor forest resources. Second, extensive forestry work has long been carried out and one-sided pursuit of afforestation