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迭部林区每年采伐面积约1,700公顷,每年更新采伐迹地约1,400公顷,荒山造林约500公顷。大面积岷江冷杉林,青杄林,紫果云杉等原始森林采伐后,皆用粗皮云杉苗木更新造林。由于树种选择不当,冷杉林迹地人工云杉林保存率低且锈病严重,难以成林成材。这种采伐优良树种为建群种林分,更折不适生树种苗木或劣等树种苗木的“取优代劣”问题,在本区各林场普遍存在。迭部林区现有优良森林经营树种10余种,辅助树种10余种,珍稀造林树种5种。科学地区划森林经营造林树种,推广繁殖优良乡土树种,探索原始森林异域异居群的小区分居规律,营造团状混交林,优化后备森林资源,是发展迭部林区,保证青山常在,永续利用的必需措施。
The Diebu area has an annual harvest area of about 1,700 hectares, an annual renewal of about 1,400 hectares of harvested land and about 500 hectares of barren hills afforestation. A large area Abies fir forest, barley forest, purple prickly wood and other virgin forests after logging, are re-afforestation with the bark of spruce seedlings. Due to improper tree species selection, artificial forest of fir spruce forest preservation rate is low and serious rust, it is difficult to become a success. This kind of excellent tree species for cutting is the stand for establishing group species, moreover, the problem of “taking superior generation and poor quality” of tree seedlings of inferior tree species or inferior tree species is widespread in all forest farms in this area. Diebu forest existing excellent forest management more than 10 species of trees, more than 10 kinds of secondary species, rare species of afforestation 5 species. Scientifically plan the afforestation tree species in forests, popularize fine native tree species, explore the law of community segregation of heterogeneous groups of virgin forests, create a mixed forest of climates and optimize the reserve of forest resources, so as to develop the Diebu area, Continued use of the necessary measures.