US EPA

8197948 

Journal Article 

[Simulation of internal loadings of nitrogen and phosphorus in a lake] 

Fan, C; Zhang, L; Yang, L; Huang, W; Xu, P 

2002 

Yes 

Haiyang yu Huzhao / Oceanologia et Limnologia Sinica
ISSN: 0029-814X 

33 

4 

370-378 

Chinese 

CABI:20023144509 

http://qdhys.ijournal.cn/hyyhz/ch/reader/create_pdf.aspx?file_no=200204005&flag=1&journal_id=hyyhz&year_id=2002
Exit
 

On the basis of in-situ investigation and analysis of the distribution of sludge and physiochemical characteristics of surficial sediment in Lake Luomahu during 1998, nutrient exchange patterns between sediment-water interface were simulated with the soft-sediment core samples at different temperatures (due to seasonal changes). The internal source was calculated by means of the release fluxes of nitrogen and phosphorus, together with the representative time section for each experimental temperature, and was compared with the result of concentration diffusion in interstitial water. The result indicates that the internal loadings of N and P in the whole lake are (1113.2 plus or minus 71.3)t/a and (12.50 plus or minus 0.95)t/a, respectively. Large differences between N and P contents and relatively high Fe contents in the soft-sediment are the main factors that cause higher N release and lower P release.