[1]LEI Sheng-kun,WANG Yu-jie,WANG Yun-qi,et al.Photosynthetic Physiological Characteristics of Three Typical Broad-leaved Trees in Jinyun Mountain[J].Research of Soil and Water Conservation,2012,19(02):189-194,200.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 02
Page number:
189-194,200
Column:
Public date:
2012-04-20
- Title:
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Photosynthetic Physiological Characteristics of Three Typical Broad-leaved Trees in Jinyun Mountain
- Author(s):
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LEI Sheng-kun, WANG Yu-jie, WANG Yun-qi, ZHU Wei-li, YI Qin, FENG Hua-min
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College of Soil and Water Conservation, Beijing Forestry University, Beijng 100083, China
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- Keywords:
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transpiration rate; water use efficiency; net photosynthetic rate; light response curve
- CLC:
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Q945.11
- DOI:
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- Abstract:
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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 048μmol/(m2·s) and 3.25μmol/(m2·s),respectively,while Symplocos setchuanensis’s light saturation point and light compensation point were 2 337μmol/(m2·s) and 5.48μmol/(m2·s),and Neolitsea aurata’s were 1 164μmol/(m2·s) and 4.62μmol/(m2·s) respectively;(2) the transpiration rate manifested as Neolitsea aurata>Gordonia acuminata>Symplocos setchuanensis with the transpiration rate of Neolitsea aurata was 0.6~0.7μmolCO2/(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.