Carbon Uptake and Leaf Gas Exchange of Ash Tree (Fraxinus excelsior) Affected by Different Intensities of Photosynthetically Active Radiation (Case Study: Central Europe Forests)

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SADEGHIPOUR AHMAD; KARTOOLINEJAD DAVOUD

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Journal: Journal of Natural Environment Year:2017 | Volume:70 | Issue:2 Page(s): 373-384

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Title

Carbon Uptake and Leaf Gas Exchange of Ash Tree (Fraxinus excelsior) Affected by Different Intensities of Photosynthetically Active Radiation (Case Study: Central Europe Forests)

Author(s)

SADEGHIPOUR AHMAD | KARTOOLINEJAD DAVOUD | Issue Writer Certificate

Keywords

CO2Q1

Photosynthesis rateQ1

Carbon fixationQ1

TranspirationQ1

Common ashQ1

Shade tolerantQ1

Abstract

Massive structures of plants have been built on the basis of photosynthesis. In this study, the effects of different light intensity on the leaf photosynthesis, Transpiration, CO2 uptake and stomatal conductance were examined. Gas exchange was measured in the planted forest of European ash tree (Fraxinus excelsior) in Hainich national park of Germany. Net Photosynthesis rate (A), Transpiration rate (E), CO2 stomatal conductance (Gs), intercellular CO2 concentration (Ci) etc. was measured for leaves of six ash individuals using LC-pro plus machine. The results showed that maximum net assimilation was about 7. 6 kg CO2 per hectare per hour. The maximum intensity of the light used for photosynthesis in this study was 696 μ mol m-2 s-1; regarding the increasing rate of photosynthesis, it seems that the maximum rate of photosynthesis will occur at the PPF a little more than 696 μ mol m-2 s-1. Transpiration rate and stomatal conductance of CO2 increased exponentially in all light intensities and their maximum were at 696 μ mol m-2 s-1. The photosynthetic rate proved that current species is a semi sun plant (light compensation point = 10. 6 μ mol m-2 s-1), which can play the role of a shade plant in the forests of Central Europe (maximum intensity of photosynthesis = 3. 5). This species has a valuable role in absorbing carbon in the mentioned forest ecosystem, which the annual carbon uptake equals to 1324 g m-2 year-1, which is about 2. 5 times more than the average uptake of all other species in the ecosystem.

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APA: Copy

SADEGHIPOUR, AHMAD, & KARTOOLINEJAD, DAVOUD. (2017). Carbon Uptake and Leaf Gas Exchange of Ash Tree (Fraxinus excelsior) Affected by Different Intensities of Photosynthetically Active Radiation (Case Study: Central Europe Forests). JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), 70(2 ), 373-384. SID. https://sid.ir/paper/194848/en

Vancouver: Copy

SADEGHIPOUR AHMAD, KARTOOLINEJAD DAVOUD. Carbon Uptake and Leaf Gas Exchange of Ash Tree (Fraxinus excelsior) Affected by Different Intensities of Photosynthetically Active Radiation (Case Study: Central Europe Forests). JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2017;70(2 ):373-384. Available from: https://sid.ir/paper/194848/en

IEEE: Copy

AHMAD SADEGHIPOUR, and DAVOUD KARTOOLINEJAD, “Carbon Uptake and Leaf Gas Exchange of Ash Tree (Fraxinus excelsior) Affected by Different Intensities of Photosynthetically Active Radiation (Case Study: Central Europe Forests),” JOURNAL OF NATURAL ENVIRONMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 70, no. 2 , pp. 373–384, 2017, [Online]. Available: https://sid.ir/paper/194848/en

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