Effects of Heteropogon contortus Competition on the Early Growth of Terminalia franchetii Seedlings in the Dry-Hot Valley of Jinshajiang River Seed Dispersion and Seed Bank Characteristics of Terminalia franchetii in Dry-hot Valley of Jinsha River Flowering phenology and breeding system of Terminalia franchetii (Combretaceae) in the dry-hot valley of the Jinsha River, China