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因地因林制宜确定合理的采伐、更新方式,是提高经营水平的基础。我省森林更新是以人工更新为主,人工更新与天然更新相结合的方针,这意味着在发挥人工更新造林的积极作用的同时,还要充分利用天然更新的优势,这在我省林区有非常重要的意义。大海林局总面积270520公顷,自1948年开始采伐以来,经历过择伐、等带皆伐、大面积皆伐、郁闭度择伐、经营择伐等不同采伐方式,据1985年更新普查资料,人工更新占有效更新面积的21.1%;人天混更新面积占核实更新面积的3.1%,天然更新面积
Due to local forest should determine the appropriate logging, updating methods, is to improve the operating level of the foundation. Forest regeneration in our province is mainly based on artificial regeneration, which is a combination of artificial regeneration and natural regeneration. This means that while utilizing the positive effect of artificial afforestation, we must make full use of the advantages of natural regeneration. Have very important meanings With a total area of 270520 hectares, Dahai Forest Bureau has undergone different harvesting methods such as selective cutting, clear-cut cutting, large-scale clear cutting, selective cutting of canopy density, and selective cutting of management since it began cutting in 1948. According to the 1985 census data , Artificial renewal accounted for 21.1% of the effective update area; man-day mixed updated area accounted for 3.1% of verified update area, natural renewal area