CHARACTERISTICS OF PHOSPHORUS FRACTIONS IN SURFACE SEDIMENT FROM A CLEAR WATER GALLERY IN PAIHE RIVER, AND ITS ENVIRONMENTAL IMPLICATIONS

CHEN Ying-ying; ZHANG Liu; YIN Hao; WANG Yu-lai

doi:10.13205/j.hjgc.202112011

Volume 39 Issue 12

Mar. 2022

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CHEN Ying-ying, ZHANG Liu, YIN Hao, WANG Yu-lai. CHARACTERISTICS OF PHOSPHORUS FRACTIONS IN SURFACE SEDIMENT FROM A CLEAR WATER GALLERY IN PAIHE RIVER, AND ITS ENVIRONMENTAL IMPLICATIONS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(12): 71-78. doi: 10.13205/j.hjgc.202112011

Citation:

CHEN Ying-ying, ZHANG Liu, YIN Hao, WANG Yu-lai. CHARACTERISTICS OF PHOSPHORUS FRACTIONS IN SURFACE SEDIMENT FROM A CLEAR WATER GALLERY IN PAIHE RIVER, AND ITS ENVIRONMENTAL IMPLICATIONS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(12): 71-78. doi: 10.13205/j.hjgc.202112011

Citation:

CHEN Ying-ying, ZHANG Liu, YIN Hao, WANG Yu-lai. CHARACTERISTICS OF PHOSPHORUS FRACTIONS IN SURFACE SEDIMENT FROM A CLEAR WATER GALLERY IN PAIHE RIVER, AND ITS ENVIRONMENTAL IMPLICATIONS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(12): 71-78. doi: 10.13205/j.hjgc.202112011

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CHARACTERISTICS OF PHOSPHORUS FRACTIONS IN SURFACE SEDIMENT FROM A CLEAR WATER GALLERY IN PAIHE RIVER, AND ITS ENVIRONMENTAL IMPLICATIONS

doi: 10.13205/j.hjgc.202112011

1. School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China;
2. Anhui Research Academy for Environmental Science, Hefei 230071, China;
3. CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China

Received Date: 2020-11-10
Available Online: 2022-03-30
Publish Date: 2022-03-30

Abstract

Abstract

The fractions distribution of sediment phosphorus is one of the important controlling factors of river endogenous release. In present study, the total phosphorus, inorganic phosphorus and organic phosphorus contents in surface sediments of Paihe River section, the clear water gallery of Yangtze-Huaihe Water Diversion, were determined. The organic phosphorus fractions were explored by the method of graded extraction, including labile organic phosphorus(LOP), moderately labile organic phosphorus(MLOP) and nonlabile organic phosphorus(NOP). And the spatial distribution characteristics of phosphorus fractions were further discussed. The results showed that the total phosphorus content in the surface sediments of Paihe River was 471.17~1509.58 mg/kg, among which the inorganic phosphorus content was 421.83~1325.17 mg/kg, and the organic phosphorus content was 103.29~221.79 mg/kg. Generally, the contents of organic phosphorus fractions followed the order of NOP>LOP>MLOP, and the content of MLOP and NOP were significantly higher in the downstream reach than in the middle and upper reach(P<0.05). The organic phosphorus fractions was related to the physical and chemical properties of sediments. NOP had significant positive correlation with cation exchange capacity(CEC)(P<0.05), MLOP and NOP had significant positive correlation with loss on ignition(LOI)(P<0.05), indicating that the variation of organic matter and CEC in sediments affected the distribution of organic phosphorus fractions. The results of this study indicated that the implementation of the Yangtze-Huaihe Water Diversion project may lead to the endogenous release of phosphorus in sediments. Therefore, after the project implemented, on the basis of reducing exogenous input and endogenous control, ecological monitoring should be strengthened and watershed intelligent management should be conducted.
- clear water gallery,
- organic phosphorus fractions,
- Yangtze-Huaihe water diversion project,
- endogenous release

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References(36)

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