低质低效林改造是改善森林结构、提高林分生产力、增强林分生态功能的重要举措。以燕山山地华北落叶松低质低效林综合改造技术模式为研究对象,从森林固碳释氧价值、涵养水源价值的角度进行分析了评价,研究表明:在不同的经营措施下,经过改造的华北落叶松低效林与未经过改造的相比,森林固碳释氧价值、涵养水源价值都有明显的增加,从功能性价值总体来看,人工促进更新的经济价值最高,为53 850.04元/hm2,其次依次为群团状择伐改造20 753.5元/hm2、封禁促进植被恢复18 767.15元/hm2、带状皆伐改造15 932.75元/hm2、引进灌木13 883.86元/hm2、封禁为12 460.24元/hm2。 The transformation of low-quality and low-efficiency forests is an important measure to improve the forest structure, improve the stand productivity and enhance the ecological function of stands. Based on the comprehensive transformation technology mode of low quality and low efficiency forest of Larix principis-rupprechtii in Yanshan Mountains, the paper evaluates the value of carbon fixation and oxygen release and water conservation value. The results show that under the different management measures, The Larix principis-rupprechtii inefficient forest could significantly increase the value of carbon sequestration and oxygen release and the water conservation value compared with the un-rehabilitated forest. From the perspective of functional value, the economic value of artificial regeneration was the highest at 53 850.04 yuan / hm2, followed by group-like selective cutting transformation of 20,753.5 yuan / hm2, closure to promote vegetation recovery of 18,767.15 yuan / hm2, ribbon-like cutting transformation of 15,932.75 yuan / hm2, the introduction of shrubs 13,883.86 yuan / hm2, 460.24 yuan / hm2.