Biogeochemical characteristics of nitrogen and phosphorus in Jiaozhou Bay sediments

Xuegang Li; Jinming Song; Huamao Yuan; Jicui Dai; Ning Li

doi:10.1007/s00343-007-0157-y

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Biogeochemical characteristics of nitrogen and phosphorus in Jiaozhou Bay sediments

Updated：2023-05-16

- Biogeochemical characteristics of nitrogen and phosphorus in Jiaozhou Bay sediments
- Journal of Oceanology and Limnology Vol. 25, Issue 2, Pages: 157-165(2007)
- Affiliations：
  
  1. Institute of Oceanology Chinese Academy of Sciences
  2. The Graduate School Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-007-0157-y
  CLC：
- Published：2007
- Accepted：
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Li, X., Song, J., Yuan, H. et al. Biogeochemical characteristics of nitrogen and phosphorus in Jiaozhou Bay sediments., Chin. J. Ocean. Limnol. 25, 157–165 (2007). https://doi.org/10.1007/s00343-007-0157-y
DOI：

Li, X., Song, J., Yuan, H. et al. Biogeochemical characteristics of nitrogen and phosphorus in Jiaozhou Bay sediments., Chin. J. Ocean. Limnol. 25, 157–165 (2007). https://doi.org/10.1007/s00343-007-0157-y DOI：

摘要

Abstract

Sediment samples were cored from 3 locations representing the inner bay

the outer bay and the bay mouth of Jiaozhou Bay in September 2003 to study the source and biogeochemical characteristics of nitrogen and phosphorus in the bay. The content and vertical distributions of total nitrogen (TN)

total phosphorus (TP)

organic nitrogen (ON)

organic phosphorus (OP)

inorganic nitrogen (IN)

inorganic phosphorus (IP)

the ratio of organic carbon and total nitrogen (OC/TN)

and the ratio of total nitrogen and total phosphorus (TN/TP) in the sediments were analyzed. The results show that both TN and TP in surface sediments decrease from the inner bay to the outer bay. In general

ON occupies 50%–70% of TN and IP accounts for more than 60% of TP. In ratio of OC:TN

the nitrogen accumulated in the sediments from the inner bay and the bay mouth came mainly from terrestrial sources

and the portion of autogenetic nitrogen was 28.9% and 13.1%

respectively. However

in the outer bay

nitrogen was mainly autogenetic

accounting for 62.1% of TN

whereas phosphorus was mainly land-derived. The sedimentation fluxes of nitrogen and phosphorus varied spatially. The overall diagenesis rate of nitrogen was higher than that of phosphorus. Specifically

the diagenesis rate of OP was higher than that of IP. However

the diagenesis rate of ON was not always higher than that of IN. In species

the diagenesis rate of IN is sometimes much higher than that of the OC. In various environments

the diagenesis rate is

to some degree

affected by OC

and Es.

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references

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