The Relation of Seasonal Changes in Water and Organic Osmotica to Freezing Tolerance in the Leaves of Sabina Frost-resistance of subtropical evergreen woody plants: An evaluation based on plant functional traits. Seasonal changes of element concentrations in the leaves of Sabina Effect of Snow Disasters to the Garden Evergreen Woody Plants in Zhuzhou Chlorophyll Fluorescence Characteristics in Response to Seasonal Variations in Two Sabina Trees