The proportion of alien invasive species originating from the tropic zone was close to that from temperate regions. The proportion of alien invasive plants caused by intentional introduction was 39%.

外来入侵物种中热带来源与温带来源比例相当，人为引入导致的外来入侵植物高达39%。

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The proportion of alien invasive species originating from the tropic zone was close to that from temperate regions. The proportion of alien invasive plants caused by intentional introduction was 39%.

外来入侵物种中热带来源与温带来源比例相当，人为引入导致的外来入侵植物高达39%。

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