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森林和水是生态系统中最活跃、最有影响的两个因素。水是生命之源，森林不仅为人们提供木材、林产品、能源，而且维持着生态平衡。大青山南坡属干旱土石山区，50～60年代以来,大规模地开展了试验造林和义务造林，造林地区已基本成林，历年来选择的造林树种达40多种。但从目前各造林树种的适应性和生长情况来看，油松、杨树、柠条、山杏表现较好，在干旱阳坡坡度较大地段．油松、柠条生长良好，是该地区造林的先锋树种．并形成了一定规模。油松胸径已达10～15cm，树高达3～4m，并有天然更新，发挥着很好的水土保持作用。为了对大青山南坡人工油松林水保效益做出系统、全面的研究，由内蒙古科委列专项，由内蒙古水科院成立课题组于1987～1992年进行了定点、定位观测研究并取得了系列科研成果。
Forests and water are two of the most active and influential ecosystems. Water is the source of life. Forests not only provide people with wood, forest products, energy, but also maintain the ecological balance. The south slope of Daqingshan Mountain is arid and mountainous areas. Since the 1950s and 1960s, afforestation and voluntary afforestation have been carried out on a large scale. Afforestation areas have basically become forests. Over 40 species of afforestation species have been selected over the years. However, according to the adaptability and growth status of the afforestation species, Pinus tabulaeformis, poplar, Caragana korshinskii and Armeniaca sibirica performed better, with a larger slope in the arid sunny slope. Pinus tabulaeformis, Caragana good growth, is the pioneer tree planting in the area. And formed a certain scale. Pinus breast diameter has reached 10 ~ 15cm, the tree up to 3 ~ 4m, and a natural update, play a very good role in soil and water conservation. In order to make a systematic and comprehensive study of the benefits of artificial pine forests on the southern slope of Daqingshan Mountain, a special task force was set up by the Inner Mongolia Science and Technology Commission and a task force established by the Inner Mongolia ASTRI from year 1987 to 1992 was observed and measured Series of scientific research achievements.