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A systematic examination of the relationships between CDOM and DOC in inland waters in China
K. S. Song, Y. Zhao, Z. D. Wen, C. Fang and Y. X. Shang; Song KS(宋开山)
2017
Source PublicationHydrology and Earth System Sciences
Volume21Issue:10Pages:5127-5141
AbstractChromophoric dissolved organic matter (CDOM) plays a vital role in the biogeochemical cycle in aquatic ecosystems. The relationship between CDOM and dissolved organic carbon (DOC) has been investigated, and this significant relationship lays the foundation for the estimation of DOC using remotely sensed imagery data. The current study examined samples from freshwater lakes, saline lakes, rivers and streams, urban water bodies, and ice-covered lakes in China for tracking the variation of the relationships between DOC and CDOM. The regression model slopes for DOC vs. a CDOM (275) ranged from extremely low 0.33 (highly saline lakes) to 1.03 (urban waters) and 3.01 (river waters). The low values were observed in saline lake waters and waters from semi-arid or arid regions, where strong photobleaching is expected due to less cloud cover, longer water residence time, and daylight hours. In contrast, high values were found in waters developed in wetlands or forest in Northeast China, where more organic matter was transported from catchment to waters. The study also demonstrated that closer relationships between CDOM and DOC were revealed when a CDOM (275) were sorted by the ratio of a CDOM. 250/ aCDOM (365), which is a measure for the CDOM absorption with respect to its composition, and the determination of coefficient of the regression models ranged from 0.79 to 0.98 for different groups of waters. Our results indicate the relationships between CDOM and DOC are variable for different inland waters; thus, models for DOC estimation through linking with CDOM absorption need to be tailored according to water types.
DOI10.5194/hess-21-5127-2017
WOS IDWOS:000412743600002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iga.ac.cn/handle/131322/7562
Collection湿地与全球变化学科组
Corresponding AuthorSong KS(宋开山)
Recommended Citation
GB/T 7714
K. S. Song, Y. Zhao, Z. D. Wen, C. Fang and Y. X. Shang,Song KS. A systematic examination of the relationships between CDOM and DOC in inland waters in China[J]. Hydrology and Earth System Sciences,2017,21(10):5127-5141.
APA K. S. Song, Y. Zhao, Z. D. Wen, C. Fang and Y. X. Shang,&宋开山.(2017).A systematic examination of the relationships between CDOM and DOC in inland waters in China.Hydrology and Earth System Sciences,21(10),5127-5141.
MLA K. S. Song, Y. Zhao, Z. D. Wen, C. Fang and Y. X. Shang,et al."A systematic examination of the relationships between CDOM and DOC in inland waters in China".Hydrology and Earth System Sciences 21.10(2017):5127-5141.
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