兰州南部山区天然次生林近自然化经营技术

The Close-to-nature Management Technology of Natural Secondary Forest in Mountainous Area of South Lanzhou

兰州南部山区森林是兰州市天然的生态屏障,该地区森林面积大小及森林生态功能的强弱均对兰州市空气质量的改善有着直接影响。在对兰州南部山区森林生长与经营现状调查与研究的基础上,依据德国森林近自然化经营技术,并结合当地立地条件,提出了山杨白桦林和灌木林等天然次生林近自然化经营技术,以期加速天然次生林近自然化经营进程,最终把低质、低效、低产的次生林培育为林分生产力高、生态系统稳定,以及健康、功能多样的近自然森林。

The forest in the southern mountain area of Lanzhou is a natural ecological barrier for Lanzhou city,its area size and ecological functions have a direct impact on the improvement of air quality in Lanzhou city.On the basis of investigation and research of this forest growth and management status,according to the close-to-nature forest management technology introduced from Germany and in combination with the local site conditions,the close-to-nature management technology for natural secondary forests such as Aspen birch forest,shrub forest etc was put forward,which aimed to accelerate the close-to-nature management process of natural secondary forest,transform the low quality,low efficiency and low yield forest into the close-to-na-ture forest of high productivity and achieve a stable ecosystem with diverse functions.