Seasonal changes of dissolved and particulate organic carbon in Donghu Lake, China

Liu Xue-jun; Xu Xiao-qing; Xie Ping; Noriko Takamura

doi:10.1007/BF02876088

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Seasonal changes of dissolved and particulate organic carbon in Donghu Lake, China

Updated：2023-05-16

- Seasonal changes of dissolved and particulate organic carbon in Donghu Lake, China
- Journal of Oceanology and Limnology Vol. 18, Issue 4, Pages: 372-377(2000)
- Affiliations：
  
  1. Institute of Hydrobiology Chinese Academy of Sciences
  2. National Institute for Environmental Studies Tsukuba
- Author bio：
- Funds：
- DOI：10.1007/BF02876088
  CLC：
- Published：2000
- Accepted：
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Xue-jun, L., Xiao-qing, X., Ping, X. et al. Seasonal changes of dissolved and particulate organic carbon in Donghu Lake, China., Chin. J. Ocean. Limnol. 18, 372–377 (2000). https://doi.org/10.1007/BF02876088
DOI：

Xue-jun, L., Xiao-qing, X., Ping, X. et al. Seasonal changes of dissolved and particulate organic carbon in Donghu Lake, China., Chin. J. Ocean. Limnol. 18, 372–377 (2000). https://doi.org/10.1007/BF02876088 DOI：

摘要

Abstract

Concentrations of dissolved and particulate organic carbon (DOC and POC) were documented in 1996–1997 at 4 different trophic state stations in Donghu Lake

a typical shallow eutrophic lake along the Changjiang River's middle reaches. The mean concentrations of DOC were 15.11±3.26

15.19±4.24

14.27±3.43

and 13.31±3.30 mg/L in Station I

III

and IV

respectively. The DOC concentrations of the studied area were very similar to that in other lakes along the Changjiang River's middle reaches. The POC mean of the whole lake was 5.01 mg/L due to the large amount of organic detritus of both allochthonous and autochthonous origin. Significant linear relationship was found between POC and chlorophyll a at all 4 stations

which presumably reflect that phytoplankton

its exudates and its metabolic products were the main contributors to the POC pool in the water column. The slope of such linear relationship at Station IV was significantly steeper than that at Station I

II and III. In addition

the DOC/POC ratios (mean value: 4.40) indicated that the organic detritus was the most important component of the particulate organic matter; in other works

next to organic detritus

phytoplankton dominated the particulate organic matter in Donghu Lake.

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references

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