Abstract: Ecological consciousness is a new independent form of consciousness. It originates from human's reflection about the degradation of global environment, with which, human beings come to realize the significance of bettor ecological environment to human existance. It is also the understanding about the ecosystem as a whole. This paper introduces the concept and formation of ecological consciousness and its main characteristics and functions.

Key words: tree peony, high temperature stress, low temperature stress, chlorophyll fluorescence, superoxide dismutase