Seasonal Changes in Photosynthetic Traits of the Co-occurring Evergreen and Deciduous Broad-leaved Species in a Montane Forest of Mao’er Mountain, Guangxi The effect of temperature and moisture on N2O flux kinetics from loessial soil Photosynthetic response to seasonal temperature changes in evergreen and deciduous broad-leaved trees in montane forests of Ailao Mountain and Mao′er Mountain