阔叶树种在杉阔混交林中具有增氮和调节碳氮比作用，退化点和作用点彼此互为佐证。

The broad leaved tree in mixed forest can add nitrogen and adjust the ration of carbon to nitrogen.

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阔叶树种在杉阔混交林中具有增氮和调节碳氮比作用，退化点和作用点彼此互为佐证。

The broad leaved tree in mixed forest can add nitrogen and adjust the ration of carbon to nitrogen.

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