Estimating CO2 response in a mixed broadleaf forest using the dynamic assimilation technique
Abstract Background Estimating the CO2 response of forest trees is of great significance in plant photosynthesis research. CO2 response measurement is traditionally employed under steady state conditions. With the development of open-path gas exchange systems, the Dynamic Assimilation Technique (DAT...
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2025-01-01
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| Series: | BMC Plant Biology |
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| Online Access: | https://doi.org/10.1186/s12870-024-05912-w |
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| author | Huiting Hu Wei Jiang Xiuhua Fan |
| author_facet | Huiting Hu Wei Jiang Xiuhua Fan |
| author_sort | Huiting Hu |
| collection | DOAJ |
| description | Abstract Background Estimating the CO2 response of forest trees is of great significance in plant photosynthesis research. CO2 response measurement is traditionally employed under steady state conditions. With the development of open-path gas exchange systems, the Dynamic Assimilation Technique (DAT), allows measurement under non-steady state conditions. This greatly improves the efficiency and data density of CO2 response measurement. This study aims to assess the accuracy and effectiveness of different models in fitting DAT data, addressing the current gap in verification of model performance. Results This research was conducted for three common broadleaf tree species (Ulmus macrocarpa, Fraxinus mandshurica, and Tilia amurensis) in North Eastern China. Among the three species, Fraxinus mandshurica is the most adapted to high CO2 concentration conditions. Four models were compared, the rectangular hyperbola (RH) model, the Michaelis-Menten (MM) model, the modified rectangular hyperbola (MRH) model and a non-rectangular hyperbola (NRH) model. Conclusions Considering the model parsimony and parameter accuracy, the NRH model emerged as the best choice (R2 = 0.9966, RMSE = 0.1862, AIC=-199.86). This study provides a reference for the further application of DAT in the field of photosynthesis. |
| format | Article |
| id | doaj-art-d86b9104424a4b02af17ac67cf1acace |
| institution | Kabale University |
| issn | 1471-2229 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Plant Biology |
| spelling | doaj-art-d86b9104424a4b02af17ac67cf1acace2025-01-26T12:23:21ZengBMCBMC Plant Biology1471-22292025-01-0125111310.1186/s12870-024-05912-wEstimating CO2 response in a mixed broadleaf forest using the dynamic assimilation techniqueHuiting Hu0Wei Jiang1Xiuhua Fan2College of Science, Beijing Forestry UniversityCollege of Science, Beijing Forestry UniversityCollege of Science, Beijing Forestry UniversityAbstract Background Estimating the CO2 response of forest trees is of great significance in plant photosynthesis research. CO2 response measurement is traditionally employed under steady state conditions. With the development of open-path gas exchange systems, the Dynamic Assimilation Technique (DAT), allows measurement under non-steady state conditions. This greatly improves the efficiency and data density of CO2 response measurement. This study aims to assess the accuracy and effectiveness of different models in fitting DAT data, addressing the current gap in verification of model performance. Results This research was conducted for three common broadleaf tree species (Ulmus macrocarpa, Fraxinus mandshurica, and Tilia amurensis) in North Eastern China. Among the three species, Fraxinus mandshurica is the most adapted to high CO2 concentration conditions. Four models were compared, the rectangular hyperbola (RH) model, the Michaelis-Menten (MM) model, the modified rectangular hyperbola (MRH) model and a non-rectangular hyperbola (NRH) model. Conclusions Considering the model parsimony and parameter accuracy, the NRH model emerged as the best choice (R2 = 0.9966, RMSE = 0.1862, AIC=-199.86). This study provides a reference for the further application of DAT in the field of photosynthesis.https://doi.org/10.1186/s12870-024-05912-wDynamic assimilation techniqueCO2 responseMixed broadleaf-korean pine forestPhotosynthetic physiological traits |
| spellingShingle | Huiting Hu Wei Jiang Xiuhua Fan Estimating CO2 response in a mixed broadleaf forest using the dynamic assimilation technique BMC Plant Biology Dynamic assimilation technique CO2 response Mixed broadleaf-korean pine forest Photosynthetic physiological traits |
| title | Estimating CO2 response in a mixed broadleaf forest using the dynamic assimilation technique |
| title_full | Estimating CO2 response in a mixed broadleaf forest using the dynamic assimilation technique |
| title_fullStr | Estimating CO2 response in a mixed broadleaf forest using the dynamic assimilation technique |
| title_full_unstemmed | Estimating CO2 response in a mixed broadleaf forest using the dynamic assimilation technique |
| title_short | Estimating CO2 response in a mixed broadleaf forest using the dynamic assimilation technique |
| title_sort | estimating co2 response in a mixed broadleaf forest using the dynamic assimilation technique |
| topic | Dynamic assimilation technique CO2 response Mixed broadleaf-korean pine forest Photosynthetic physiological traits |
| url | https://doi.org/10.1186/s12870-024-05912-w |
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