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在森林调查工作中,为了按森林结构规律经营森林,常在现有林中划分森林类型(或划林型),在每个森林类型中,再根据经营目的,经营条件划分若干经营类型。而为了按自然条件恢复适合的森林,又常在宜林地中划分
In forest surveys, in order to operate forests according to the law of forest structure, forest types (or planted forests) are often classified into existing forests. In each forest type, a number of types of management are further classified according to business purposes and operating conditions. And in order to restore the suitable natural conditions of the forest, and often divided in the forest land