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阿·伊·沃龙佐夫指出,森林保护措施,应与森林经理复查期制定的营林计划相结合。这些措施均应包括以下内容:(1)建立病虫害观察机构;(2)制定提高林分生物抗性以及病虫害防治的措施;(3)经济估价。害虫的大量繁殖与各种因子所造成的树体衰弱是紧密联系的。为了预防树干害虫的大量繁殖,必须实施“卫生规则”。在森林中要彻底清理死树和倒木,清除采伐剩余物,除掉树干害虫定居的枯萎树,通过化学处理或剥皮的方法保护木材。卫生择伐要掌握限度,以免过分稀疏使林分抗性减弱,甚
Ahoy Vorontsov pointed out that forest protection measures should be integrated with the forest management plan developed by the forest manager during the review period. These measures should include the following: (1) establishment of a pest observatory; (2) development of measures to improve the biological resistance of pests and pests and diseases; and (3) economic valuation. The multiplication of pests is closely linked to the decline of trees caused by various factors. In order to prevent the multiplication of trunk pests, “Health Regulations” must be implemented. Thoroughly clean the dead and fallen trees in the forest, remove the harvesting residues, remove the dead trees from settling tree pests, and protect the timber by chemical treatment or skinning. Selective cutting of health should grasp the limits, so as to avoid excessive sparseness of the forest resistance weakened