Changes of the Biological and Spectral Characteristics of the Pine Caterpillar-Damaged Red Pine Forest in the Spring Drought-tolerant Physiology of CBF1 Transgenic Cotton Study on Leaf Morphology and Photosynthetic Characteristics of Ophiopogon japonicus and Liriope spicata Effects of leaf removal on growth and physiological characteristics of Rehmannia glutinosa Photosynthetic and Morphological Responses and Plasticity of Four Naturally-Regenerated Shrubs under Forest Light Environments Effects of Seed-coating Agents on Physiological,Biochemical and Chlorophyll Fluorescence Characteristics in Leaves of Rice Seedlings