Relationship between Tree Composition and Light Utilization of Camellia oleifera Review of Studies on Plant Shade-Tolerance STUDIES ON THE QUANTUM YIELD OF SOME MARINE PHYTOPLANKTON Simulation of Temporal and Spatial Distribution of Natural Vegetation Light Utilization Efficiency Based on 3s Application of CASA Model to the Estimation of Chinese Terrestrial Net Primary Productivity Comparative Studies on Light Utilization Characteristics and Shade Tolerance of 7 Climbing Shrub Species Light Utilization Efficiency of Temperate Typical Grassland in Growing Period