Study on the Photosynthetic Efficiency of the Bischofia javanica Leaves by Using Photo-acoustic Tomography Technology

摘要

By using a new kind of single-beam normalized photo-acoustic tomography spectroscopy (PAS-CT) technology with non-damage detection, the photo-acoustic tomography spectroscopy, optical absorption properties and photosynthetic pigment content of green and red leaves of Bischofia javanica were studied. The results show that: the photo-acoustic tomography spectroscopy of Bischofia javanica leaves could be obtained from different chopping frequency and different sample positions, and photosynthetic pigment content of their leaves is closely related to their photosynthetic intensity. The more photosynthetic pigment content the leaves of Bischofia javanica contain, the bigger optical absorption coefficient and the higher photosynthetic efficiency they have. The photosynthetic pigment content of the green leaves of Bischofia javanica is higher than that of the red ones. As a result, the photosynthesis of green leaves is better than that of the red ones. According to the results of our research, the photosynthetic efficiency of Bischofia javanica could be improved and its growth time could be effectively controlled to enhance the growth of Bischofia javanica. Furthermore, it could play an important role on the development of forestry, and meet the need of forest for 6 billion people. The research showed high science value to study and applications of the photosynthesis of plants.