期刊论文

中文

浙江农林大学学报

2095-0756

2004

21

3

247-253

10.3969/j.issn.2095-0756.2004.03.003

国家自然科学基金重大资助项目（39899370）； 国家林业局重点科研项目（2001 07）； 湖南省自然科学基金资助项目（00JJY2024）；

本校为第一机构

用Li-Cor6400光合测定系统测定自然生长白栎Quercus fabri的光合速率、蒸腾速率和气孔导度对二氧化碳(CO2)浓度增加和温度升高的响应.结果表明:短期内CO2浓度增加,白栎的净光合速率增大.CO2浓度为290～450 μmol·mol-1时,白栎的光补偿点、饱和点和最大净光合速率(CO2)分别为90～100 μmol·m-2·s-1,1 500～1 700 μmol·m-2·s-1和5.5～8.2 μmol·m-2·s-1.CO2浓度倍增到700 μmol·mol-1时,光补偿点和饱和点均有所降低,分别为10 μmol·m-2·s-1和1 300 μmol·m-2·s-1,最大净光合速率增大,为10.6 μmol·m-2·s-1.白栎光合作用在春季适宜温度为24 ℃,相应的光饱和点和最大净光合速率分别为...

Li-Cor 6400 Photosynthesis Measure System was used to measure the responses of photosynthetic rate,transpiration rate and stomatal conductance of Quercus fabri to increase in CO_2 concentration and temperature.The findings showed that net photosynthetic rate of Quercus fabri increased when the CO_2 concentration was increased in a very short time.When CO_2 concentration was 290-450 μmol·mol~(-1),the light compensation point(P_(LC)),light saturation point(P_(LS)),and maximun net photosynthetic rate (A_(max))were 90-100,1 500-1 700 and 5.5-8.2 ...