论文部分内容阅读
采用随机样地的方法，分别对大兴安岭、小兴安岭和牡丹江等林区的采伐作业区进行了森林更新及水土保持等方面的调查，对获得的大量数据研究表明：（１）大兴安岭林区应采用隔带皆伐或渐伐，采伐带宽为５０～１００ｍ，保留带宽为５０～８０ｍ；采用择伐时，采伐强度应控制在６０％左右；（２）小兴安岭和长白山以云冷杉为主的林分，应采用择伐，采伐强度应小于２５％；（３）以红松混交林为主的林分，采伐强度应控制在２４％～３４％。同时，必须因地制宜、科学地选择采伐方式、采伐强度、集材方式和作业季节，提高工人的技术素质，严格按照《森林采伐更新技术规程》作业，使森林采伐对森林生态系统稳定性的破坏最小。
The methods of random sampling were used to investigate the forest renewal, water and soil conservation in the cutting area of Daxinganling, Xiaoxing’anling and Mudanjiang, respectively. The data obtained showed that: (1) Daxing’anling forest area should be separated by With clear cutting or gradual cutting, harvesting bandwidth is 50 ~ 100m and reserved bandwidth is 50 ~ 80m; when selective cutting is adopted, harvesting intensity should be controlled at about 60%; (2) Stands mainly in cloud fir in Xiaoxing’an Mountains and Changbai Mountains, Should be used for selective cutting, harvesting intensity should be less than 25%; (3) to the Korean pine mixed forest-based stand, harvesting intensity should be controlled at 24% to 34%. At the same time, it is necessary to scientifically select methods of harvesting, harvesting intensity, methods of gathering timber and working season according to local conditions and to improve the technical quality of workers. Strictly following the operation of “Technical Regulations on Forest Harvesting and Regeneration”, the damage of forest harvesting on the stability of forest ecosystems must be minimized .