Changes of Antioxidative Ability in Leaves of Rice Cultivars Grown under Enriched C02 ADVANCES IN RESEARCHES ON MOLECULAR BIOLOGY OF PLANT COLD RESISTANCE The Regulation of Light Intensity to Antioxidative Ability in Leaves of Four Subtropical Forest Plant EFFECT OF HUMAN DISTURBANCE ON ANTIOXIDATIVE ABILITY IN LEAVES OF SUBTROPICAL FOREST WOODY PLANTS Effects of Cadmium on oxidative stress and antioxidative ability in the Frog Rana nigromaculata under a long-term exposure