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Original Article
Drought Impact on Carbon Assimilation of A Zelkova Serrata Plantation
Chung-I Chen
National Taiwan University
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6765-3290
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: As anthropogenic greenhouse gas emissions intensify global climate change, plantations have become an important tool to mitigate atmospheric CO2. Our aim in this study was to estimate carbon assimilation and clarify the impact of environmental factors on the photosynthesis of Zelkova serrata, an important plantation species, which extensively planted in low altitude of East Asia.
Results: We measured monthly gas exchange parameters and leaf area to estimate carbon assimilation. The results showed that gas exchange was significantly affected by vapor pressure deficit and temperature, especially in the dry season, and both photosynthetic rate and carbon assimilation decreased. However, drought led to lower daytime assimilation and higher night-time respiration, which caused a 43% decrease in carbon assimilation. Additionally, the poor site quality and environmental stress may impact the growth and carbon assimilation of this species.
Conclusions: Z. serrata may not be suitable for planting in a tropical monsoon climate area. Therefore, the effects of extreme weather on the forest carbon budget may be stronger in the future. Leaf area showed seasonal variation and serious defoliation caused by a typhoon in the summer. The monthly leaf assimilation rate was 0.88–4.17 μmol CO2 m-2 s-1, which was estimated to assimilate 3.50 Mg C ha-1 yr-1 in the study area.
Keywords
canopy, leaf area index, photosynthetic rate, vapor pressure deficit, water deficit
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CURRENT STATUS: Under Review
Version 1
Posted 12 Jan, 2021
No community comments so far
Review #1 received
Received 18 Jan, 2021
Reviewer #2 agreed
On 17 Jan, 2021
Reviewer #1 agreed
On 10 Jan, 2021
Reviewers invited
Invitations sent on 09 Jan, 2021
Editor assigned
On 06 Jan, 2021
Submission checks complete
On 06 Jan, 2021
Editor invited
On 06 Jan, 2021
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This preprint is under consideration at Botanical Studies. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Original Article
Drought Impact on Carbon Assimilation of A Zelkova Serrata Plantation
Chung-I Chen
National Taiwan University
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6765-3290
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 12 Jan, 2021
No community comments so far
Review #1 received
Received 18 Jan, 2021
Reviewer #2 agreed
On 17 Jan, 2021
Reviewer #1 agreed
On 10 Jan, 2021
Reviewers invited
Invitations sent on 09 Jan, 2021
Editor assigned
On 06 Jan, 2021
Submission checks complete
On 06 Jan, 2021
Editor invited
On 06 Jan, 2021
First submitted
On 03 Jan, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: As anthropogenic greenhouse gas emissions intensify global climate change, plantations have become an important tool to mitigate atmospheric CO2. Our aim in this study was to estimate carbon assimilation and clarify the impact of environmental factors on the photosynthesis of Zelkova serrata, an important plantation species, which extensively planted in low altitude of East Asia.
Results: We measured monthly gas exchange parameters and leaf area to estimate carbon assimilation. The results showed that gas exchange was significantly affected by vapor pressure deficit and temperature, especially in the dry season, and both photosynthetic rate and carbon assimilation decreased. However, drought led to lower daytime assimilation and higher night-time respiration, which caused a 43% decrease in carbon assimilation. Additionally, the poor site quality and environmental stress may impact the growth and carbon assimilation of this species.
Conclusions: Z. serrata may not be suitable for planting in a tropical monsoon climate area. Therefore, the effects of extreme weather on the forest carbon budget may be stronger in the future. Leaf area showed seasonal variation and serious defoliation caused by a typhoon in the summer. The monthly leaf assimilation rate was 0.88–4.17 μmol CO2 m-2 s-1, which was estimated to assimilate 3.50 Mg C ha-1 yr-1 in the study area.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6