除热带林外，人工林的净第一性生产力大于天然林净第一性生产力。

But artificial forests have larger NPP than natural forests except those in tropical zone.

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本文研究了黑石顶自然保护区南亚热带常绿阔叶林的生物量增量及其分配规律，净第一性生产量及其分配规律。

Biomass increment, net primary production, and their allocation of the lower subtropical evergreen broad-leaved forest in Heishiding natural reserve were studied.

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氮的净矿化速率与林型关系很大。

There is a distinct relationship between net Nitrogen mineralization rate and forest type.

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