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辽宁西部朝阳地区,境内多山,西北部系努鲁尔虎山山脉,东南部为松岭山脉,西南为燕山山脉北麓,东北部连接医巫闾山,土地总面积22500平方公里,其中山地占74％,是一个山区。大凌河的中上游自西南向东北横贯中间,四周尚有老哈河、青龙河、小凌河、六股河等水系的上游。从前朝阳山区是山青水秀的好地方,到解放初森林覆被率仅存2.3％,建国后经大面积造林和封山育林,全区有林地面积已达800万亩,森林覆被率上升到15.3％。森林的演变对自然环境条件和人类生活与生产条件产生了重要的影响。
In the western part of Chaoyang District of Liaoning Province, there are many mountainous and northwestern areas, including the Nuluer Tiger Mountain Range in the south, Songling Mountain Range in the southeast, the northern foot of the Yanshan Mountain Range in the southwest, and Yiwulu Mountain in the northeast. The total land area is 22,500 square kilometers, of which 74% It is a mountainous area. The middle and upper reaches of the Daling River runs from southwest to northeast across the middle of the Dalinghe River, and there are the upper reaches of the Laohahe, Qinglonghe, Xiaolinghe and Liuchahe rivers. Once upon a time, the forest cover rate of only 2.3% remained after the liberation. After large-scale afforestation and closing hillside afforestation after the founding of the People’s Republic, the area of forest land has reached 8 million mu and the forest cover rate has risen to 15.3 %. The evolution of forests has had a significant impact on the natural and human conditions of life and production.