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生物入侵是指生物由原生存地经自然的或人为的途径侵入到另一个新的环境,对入侵地的生物多样性、农林牧渔业生产以及人类健康造成经济损失或生态灾难的过程。一般而言,一个国家或地区主动引进某物种加以培养、种植养殖,以便丰富国人餐桌或用于保护生态、美化环境等,不归类为生物入侵。不是主动引进,对本土农业、生态环境和人畜健康产生不利影响,才能称为生物入侵。
Biological invasion refers to the biological invasion from natural or man-made pathways to another new environment, causing economic loss or ecological catastrophe to the biological diversity, farming, forestry, animal husbandry and fishery production as well as human health. In general, a country or region takes the initiative to introduce a species to be cultivated, planted and raised in order to enrich people's dining table or to protect the environment and beautify the environment, which are not classified as biological invasion. Not to take the initiative to introduce, on the local agriculture, ecological environment and the adverse effects of human and animal health, can be called biological invasion.