Abstract: As a major greenhouse gas, ozone concentration is increasing in troposphere. The elevated ozone is highly toxic to plants, which can cause visible foliar injury and increase the level of active oxygen in plant, but also, can stimulate the activity of plant anti-oxidative system. To study the effects of elevated ozone on the anti-oxidative oxygen system in plants is an important topic in researching the responses of plants to global change. In this paper, the research advances in toxic mechanism of elevated ozone to plants, resistance responses of plants to elevated ozone, and effects of CO₂ and ozone on plant anti-oxidative system were summarized, which could be helpful to improve the understanding about the effects of elevated ozone on plants.

Key words: Changbai Mountains, Korean pine and broadleaved mixed forest, Forest insect, Diversity