第二组生物技术可用于提供工业原料的大规模人工种植林。

A second group of biotechnologies can be used for planted forests that provide industrial raw materials on a large planting scale.

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为简单起见，依据人工种植林的类型确定三种不同组别的生物技术，其从最不复杂的到最先进的。

For simplicity, three different groups of biotechnologies can be identified according to the type of planted forests, ranging from the least sophisticated to the most advanced.

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对种植林来说，虽然有一些重叠，但所使用的生物技术的范围通常和使用在自然再生林上的有很大的不同。

For planted forests, although there is some overlap, the range of biotechnologies used is generally quite different from that used for naturally regenerated forests.

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