我国有五大林种,分别是防护林、特种用途林、用材林、薪炭林和()...
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数量成熟是指林分蓄积或材积平均生长量达到最大时的状态。当到达数量成熟龄时,平均生长量和连年生长量()...
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森林区划是林业局内部的区划,是针对调查规划、()、资源管理及组织林业生产措施的需要进行的。...
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补充主伐是按各经营类型可以进行采伐利用的疏林、散生木和母树,分别计算其采伐量。...
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下列属经营类型的是:()A、杉木抚育经营类型B、杉木间伐经营类型C、杉木大径材经营类型D、杉木主伐经营类E、毛竹经营类型F、马尾松大径材经营类型...
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