中文摘要：

采用Li-6400测定毛竹蒸腾作用在不同时间尺度上的动态变化，结果表明：毛竹夏、秋季的蒸腾日变化为双峰曲线，冬、春季的蒸腾日变化为单峰曲线；毛竹蒸腾年动态变化为单峰曲线，1月份最低，仅为0．29mmol·m^-2·s^-1；8月份最高，达3．90mmol·m^-2·s^-1；年均值为1．46mmol·m^-2·s^-1。与毛竹光合动态相比，不同季节毛竹的蒸腾作用与光合作用日变化一致，年变化则略有不同，光合年动态变化为三峰曲线，而蒸腾作用年动态变化为单峰曲线。

英文摘要：

Used Li-6400, the transpiration dynamic variation of PhyUostachys edulis was determined in deferent time scales. The results showed that the diurnal variation of transpiration rate （Tr） changed with season, bimodality in summer and autumn, and single peak curve in winter and spring. The annual variation of transpiration followed a single peak curve,the peak（3.90 mmol m^-2·s^-1 ）occurred in August, the lowest was only 0.29 mmol m^-2·s^-1 in January, and the annual mean of Tr was 1.46 mmol m^- 2·s^- 1. Compared with the photosynthetic dynamic variation of PhyUostachys edulis, the diurnal variation of transpiration and photosynthesis were identical in the same season; but the annual variation was difference, three-peak-curve to photosynthesis and single-peak-curve to transpiration.