荒漠灌木逆境适应性研究进展

Advances of Studies on Adaptation of Desert Shrubs to Environment Stress

荒漠区具有干旱、高温、强光复合逆境的特点,荒漠灌木为了适应其特定的生境条件,在长期的进化过程中形成了一系列抵御逆境的生理生态适应机制。从形态结构特性和水势、光合特性、气孔导度、蒸腾特性、渗透调节、抗氧化保护等生理生化特性方面,回顾了荒漠灌木对干旱、高温、强光的适应对策和机制,进而分析了在上述领域应重点研究的问题。

The combined stress of drought, high temperature and excessive light characterizes the desert area. In order to survive the desert habitat,desert shrubs have evolved a number of special eco-physiological mechanisms to resist environment stress during the long-term evolution. In this paper,the adaptation mechanisms of desert shrubs to environmental stresses are reviewed in terms of morphological structure,water potential, photosynthesis,water use efficiency, transpiration and stomatal conductance, osmotic adjustment and antioxidation protection.In addition, some suggestions for future research are proposed.