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Academic Journal of Environment & Earth Science, 2023, 5(5); doi: 10.25236/AJEE.2023.050501.

Distribution and Release Fluxes of Phosphorus from Sediments in the Lake Caohai, Guizhou


Feifei Zheng, Tao Lin, Jixing Dong, Anyan Li, Yuanbin Tian

Corresponding Author:
Tao Lin

Key Laboratory of Environmental Information System and Ecological Environmental Protection in Guizhou Province, Guizhou Normal University, Guiyang, China


A typical grass-type lake, Caohai, Guizhou, was used as the study object. The morphology and release flux of phosphorus in Caohai sediment were analyzed by the chemical continuous extraction method and pore water diffusion model. The results showed that the TP content of Caohai sediment was 559.75 mg/kg, much lower than that of other lakes on the Yunnan-Guizhou Plateau; the release flux was -0.0009-0.0518 mg/(m2-d); the phosphorus form content was Res-P>NaOH-NRP>NaOH-SRP>BD-P>HCl-P>NH4Cl-P in descending order. However, due to the high proportion of organic phosphorus in the Caohai, the ecological risk of its potential release was high. In this study, the author found that the sediment phosphorus content and release flux of grass-type lakes, represented by Guizhou Caohai, were lower than those of algal-type lakes, which had important implications for the conservation management of grass-type lakes.


Caohai, Guizhou, Interstitial water, Sediment, Phosphorus morphology, Release flux

Cite This Paper

Feifei Zheng, Tao Lin, Jixing Dong, Anyan Li, Yuanbin Tian. Distribution and Release Fluxes of Phosphorus from Sediments in the Lake Caohai, Guizhou. Academic Journal of Environment & Earth Science (2023) Vol. 5 Issue 5: 1-7. https://doi.org/10.25236/AJEE.2023.050501.


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