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经济成熟林是指森林年平均总收益最大、森林纯收益最大、造林利益率最高、土地纯收益最多、净现值最大的成熟林。塞罕坝经济成熟林皆伐是对达到经济成熟的人工商品林进行皆伐,以实现林地最大的经营效益,获得最大的经济效益。河北省塞罕坝机械林场总经营面积140万亩,有林地112万亩。森林资源特点是以人工林为主、树种单一、林龄集中、面积广阔、集中连片,存在着易发生病虫害、不利于防火、整体生态系统不稳定、成熟期过分集中、采伐期过分集中等弊端。2001年,经分类经营区划,有40万亩落叶松人工林被界定为商品林
Economic mature forest refers to mature forest with the largest average annual total return of forest, the largest net return of forest, the highest rate of afforestation profit, the largest net return of land and the largest net present value. Saihanba Economic Ripening Jiali Cutting is the clear cutting of artificial forest reaching the mature economy so as to realize the maximum operating benefit and the maximum economic benefit. Hebei Province, Saihanba mechanical forest total management area of 1400000 mu, 1120000 acres of woodland. Forest resources are characterized by plantations, single tree species, concentrated forest age, broad area, contiguous contiguity, prone to pests and diseases, unfavorable to fire prevention, instability of the whole ecosystem, over-concentration in mature period and over-concentration in harvesting period Disadvantages. In 2001, classified management division, 40 acres of larch plantation was defined as commercial forest