Diurnal changes in photosynthesis and chlorophyll fluorescence parameters of Amomum villosum lour. grown under tropical rainforest in rainy, and foggy and cool seasons at Xishuangbanna
热带雨林下砂仁叶片光合作用和叶绿素荧光参数在雾凉季和雨季的日变化

Amomum villosum Lour. (Zingeraceae) is a perennial herb that occurs in the understory of tropical and subtropical forests, and is an important medicinal plant. A. villosum, native to Guangdong province, was introduced intentionally to Xishuangbanna, Yunnan province in 1963, and was planted under tropical rainforest. Farmers often thinned out some (5%~85%) canopy trees when they grew this plant for commercial purpose in the primary forests. Consequently biodiversity of these forests decreased, and A. villosu...