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A systematic examination of the relationships between CDOM and DOC in inland waters in China
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| Zeitschriftentitel: | Hydrology and Earth System Sciences |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Hydrology and Earth System Sciences, 21, 2017, 10, S. 5127-5141 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Copernicus GmbH
|
| Schlagwörter: |
| author_facet |
Song, Kaishan Zhao, Ying Wen, Zhidan Fang, Chong Shang, Yingxin Song, Kaishan Zhao, Ying Wen, Zhidan Fang, Chong Shang, Yingxin |
|---|---|
| author |
Song, Kaishan Zhao, Ying Wen, Zhidan Fang, Chong Shang, Yingxin |
| spellingShingle |
Song, Kaishan Zhao, Ying Wen, Zhidan Fang, Chong Shang, Yingxin Hydrology and Earth System Sciences A systematic examination of the relationships between CDOM and DOC in inland waters in China General Energy |
| author_sort |
song, kaishan |
| spelling |
Song, Kaishan Zhao, Ying Wen, Zhidan Fang, Chong Shang, Yingxin 1607-7938 Copernicus GmbH General Energy http://dx.doi.org/10.5194/hess-21-5127-2017 <jats:p>Abstract. Chromophoric 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. aCDOM (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 aCDOM (275) were sorted by the ratio of aCDOM(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. </jats:p> A systematic examination of the relationships between CDOM and DOC in inland waters in China Hydrology and Earth System Sciences |
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A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_unstemmed |
A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_full |
A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_fullStr |
A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_full_unstemmed |
A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_short |
A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_sort |
a systematic examination of the relationships between cdom and doc in inland waters in china |
| topic |
General Energy |
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http://dx.doi.org/10.5194/hess-21-5127-2017 |
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2017 |
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5127-5141 |
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<jats:p>Abstract. Chromophoric 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. aCDOM (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 aCDOM (275) were sorted by the ratio of aCDOM(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.
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| description | <jats:p>Abstract. Chromophoric 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. aCDOM (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 aCDOM (275) were sorted by the ratio of aCDOM(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. </jats:p> |
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| spelling | Song, Kaishan Zhao, Ying Wen, Zhidan Fang, Chong Shang, Yingxin 1607-7938 Copernicus GmbH General Energy http://dx.doi.org/10.5194/hess-21-5127-2017 <jats:p>Abstract. Chromophoric 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. aCDOM (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 aCDOM (275) were sorted by the ratio of aCDOM(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. </jats:p> A systematic examination of the relationships between CDOM and DOC in inland waters in China Hydrology and Earth System Sciences |
| spellingShingle | Song, Kaishan, Zhao, Ying, Wen, Zhidan, Fang, Chong, Shang, Yingxin, Hydrology and Earth System Sciences, A systematic examination of the relationships between CDOM and DOC in inland waters in China, General Energy |
| title | A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_full | A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_fullStr | A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_full_unstemmed | A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_short | A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| title_sort | a systematic examination of the relationships between cdom and doc in inland waters in china |
| title_unstemmed | A systematic examination of the relationships between CDOM and DOC in inland waters in China |
| topic | General Energy |
| url | http://dx.doi.org/10.5194/hess-21-5127-2017 |