水土保持研究2012，Vol.19Issue(2)：189-194,200,7.
缙云山三种典型阔叶树光合生理特性研究
Photosynthetic Physiological Characteristics of Three Typical Broad-leaved Trees in Jinyun Mountain
摘要
Abstract
For the study of photosynthetic physiological characteristics of the three typical broad-leaved trees in Jinyun Mountain,and identification of the appropriate light response curve,the indicators of the typical tree species（including Symplocos setchuanensis,Gordonia acuminate and Neolitsea aurata） were measured under natural conditions using Li—6400 portable photosynthesis monitor,such as photosynthetic rate,transpiration rate and water use efficiency.Using revised rectangular hyperbolic model（RRHM） and non-rectangular hyperbolic model（NRHM） for light-response curve fitting,we obtained：（1） light saturation point and light compensation point of Gordonia acuminate were 1 048 μmol/（m2·s） and 3.25 μmol/（m2·s）,respectively,while Symplocos setchuanensis′s light saturation point and light compensation point were 2 337 μmol/（m2·s） and 5.48 μmol/（m2·s）,and Neolitsea aurata′s were 1 164 μmol/（m2·s） and 4.62 μmol/（m2·s） respectively;（2） the transpiration rate manifested as Neolitsea aurataGordonia acuminataSymplocos setchuanensis with the transpiration rate of Neolitsea aurata was 0.6~0.7 μmolCO2/（m2·s） higher than that of Symplocos setchuanensis.The results showed that：（1） Symplocos setchuanensis had the strongest light fastness and may be C4 plant;（2） RRHM possessed more advantages in calculating light saturation point and maximum net photosynthetic rate of tree species with photo inhibition.关键词
蒸腾速率/水分利用效率/净光合速率/光响应曲线Key words
transpiration rate/water use efficiency/net photosynthetic rate/light response curve分类
农业科技引用本文复制引用
雷声坤,王玉杰,王云琦,朱蔚利,易琴,冯华敏..缙云山三种典型阔叶树光合生理特性研究[J].水土保持研究,2012,19(2):189-194,200,7.基金项目
林业公益性行业科研专项“西南长江三峡地区典型森林植被对水资源形成过程的调控研究” （）
中央高校基本科研业务费专项资金资助 （）
长江三峡库区（重庆）森林生态站 （）
