Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two species
CO2 concentrations and soil moisture conditions are important factors in photosynthesis of trees. This study investigated the photosynthetic CO2 responses in the leaves of Prunus sibirica L. and Pinus tabulaeformis Carr. under eight soil water conditions in a semiarid loess hilly region. CO2-respons...
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| Format: | Article |
| Language: | English |
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Academy of Sciences of the Czech Republic, Institute of Experimental Botany
2020-06-01
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| Series: | Photosynthetica |
| Subjects: | |
| Online Access: | https://ps.ueb.cas.cz/artkey/phs-202003-0013_photosynthetic-co2-response-to-soil-water-and-its-simulation-using-different-models-in-leaves-of-two-species.php |
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| author | Q. WU T. ZHANG C.R. LI H.B. XIE G.C. ZHANG |
| author_facet | Q. WU T. ZHANG C.R. LI H.B. XIE G.C. ZHANG |
| author_sort | Q. WU |
| collection | DOAJ |
| description | CO2 concentrations and soil moisture conditions are important factors in photosynthesis of trees. This study investigated the photosynthetic CO2 responses in the leaves of Prunus sibirica L. and Pinus tabulaeformis Carr. under eight soil water conditions in a semiarid loess hilly region. CO2-response curves and physiological parameters were fitted using a rectangular hyperbola model, nonrectangular hyperbola model, exponential equation, and modified rectangular hyperbola model. Results revealed the relative soil water content (RWCs) for P. sibirica required to maintain higher photosynthetic rate ranging from 46.5 to 81.6%, and that for P. tabulaeformis ranging from 35.4 to 84.5%. When RWCs exceeded these ranges, the net photosynthetic rate of both species decreased. CO2-response curves and three parameters, carboxylation efficiency, CO2-compensation point, and photorespiration rate, were well fitted by the four models when RWCs was appropriate for P. sibirica and P. tabulaeformis. When RWCs exceeded the optimal ranges, only the modified rectangular hyperbola model could precisely simulate the CO2-response curves and photosynthetic parameters of both species. |
| first_indexed | 2024-04-12T08:50:38Z |
| format | Article |
| id | doaj.art-60b192001e3d41a595903a5d653337f5 |
| institution | Directory Open Access Journal |
| issn | 0300-3604 1573-9058 |
| language | English |
| last_indexed | 2024-04-12T08:50:38Z |
| publishDate | 2020-06-01 |
| publisher | Academy of Sciences of the Czech Republic, Institute of Experimental Botany |
| record_format | Article |
| series | Photosynthetica |
| spelling | doaj.art-60b192001e3d41a595903a5d653337f52022-12-22T03:39:35ZengAcademy of Sciences of the Czech Republic, Institute of Experimental BotanyPhotosynthetica0300-36041573-90582020-06-0158379079810.32615/ps.2020.023phs-202003-0013Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two speciesQ. WU0T. ZHANG1C.R. LI2H.B. XIE3G.C. ZHANG4School of Art, Shangdong Jianzhu University, 250101 Jinan, ChinaFaculty of Forestry, Shandong Agricultural University, 271018 Tai'an, ChinaTaishan Forest Ecosystem Research Station, 271018 Tai'an, ChinaThe Forestry Science and Technology Training Center of Shandong, 250013 Jinan, ChinaFaculty of Forestry, Shandong Agricultural University, 271018 Tai'an, ChinaCO2 concentrations and soil moisture conditions are important factors in photosynthesis of trees. This study investigated the photosynthetic CO2 responses in the leaves of Prunus sibirica L. and Pinus tabulaeformis Carr. under eight soil water conditions in a semiarid loess hilly region. CO2-response curves and physiological parameters were fitted using a rectangular hyperbola model, nonrectangular hyperbola model, exponential equation, and modified rectangular hyperbola model. Results revealed the relative soil water content (RWCs) for P. sibirica required to maintain higher photosynthetic rate ranging from 46.5 to 81.6%, and that for P. tabulaeformis ranging from 35.4 to 84.5%. When RWCs exceeded these ranges, the net photosynthetic rate of both species decreased. CO2-response curves and three parameters, carboxylation efficiency, CO2-compensation point, and photorespiration rate, were well fitted by the four models when RWCs was appropriate for P. sibirica and P. tabulaeformis. When RWCs exceeded the optimal ranges, only the modified rectangular hyperbola model could precisely simulate the CO2-response curves and photosynthetic parameters of both species.https://ps.ueb.cas.cz/artkey/phs-202003-0013_photosynthetic-co2-response-to-soil-water-and-its-simulation-using-different-models-in-leaves-of-two-species.phpco2-response modelsmodel simulation effectphotosynthetic co2 responsetree species |
| spellingShingle | Q. WU T. ZHANG C.R. LI H.B. XIE G.C. ZHANG Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two species Photosynthetica co2-response models model simulation effect photosynthetic co2 response tree species |
| title | Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two species |
| title_full | Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two species |
| title_fullStr | Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two species |
| title_full_unstemmed | Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two species |
| title_short | Photosynthetic CO2 response to soil water and its simulation using different models in leaves of two species |
| title_sort | photosynthetic co2 response to soil water and its simulation using different models in leaves of two species |
| topic | co2-response models model simulation effect photosynthetic co2 response tree species |
| url | https://ps.ueb.cas.cz/artkey/phs-202003-0013_photosynthetic-co2-response-to-soil-water-and-its-simulation-using-different-models-in-leaves-of-two-species.php |
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