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- Title
Characteristics of Photosynthetic Fluorescence of Dominant Submerged Plants in Nanjishan Wetland of Poyang Lake in Winter.
- Authors
Jian Minfei; Yu Houping; Wang Sichen; Peng Wanling
- Abstract
Based on the investigation of the species and frequency of submerged plants in Nanjishan Wetland of Poyang Lake in the winter of 2013, chlorophyll contents and photosynthetic fluorescence characteristics of the dominant submerged plants were studied using chlorophyll fluorescence imaging method. The results indicate that the major submerged plants of Nanjishan Wetland in Poyang Lake in winter included Hydriiia verticillata, Vallisneria natans, Najas minor, Potamogeton pectinatus, Nymphoides peltatum, Myriophyllum vertlclllatum and so on , and the dominant species were mainly H verticillata and V natans in different submerged plant communities. The chlorophyll content of H verticillata is higher than that of V natans, and the photosynthesis intensity of H verticillata is stronger than that of V natans. The value of Ca/Cb of H verticillata is not large, which shows that the light-harvesting capacity of H verticillata.'s chlorophyll is considerable in different sampling sites. The highest value of QY-max of V natans is up to 0.732, while the lowest value is only 0.465; the highest value of QY-max of H verticillata is 0.677, while the lowest value is 0.556. Al values of QY-max of the submerged plants were lower than 0.8, which shows that the submerged plants in Nanjishan Wetland of Poyang Lake may be subjected to certain external stress, which indicates that the external stress might cause some damage tor the PSII reaction centers.
- Subjects
POYANG Lake (China); CHLOROPHYLL; PHOTOSYNTHESIS; LAKES; PLANT physiology
- Publication
Meteorological & Environmental Research, 2015, Vol 6, Issue 2, p20
- ISSN
2152-3940
- Publication type
Article