Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

WANG Lili; YE Mei; LI Qusheng; ZOU Hang; ZHOU Yongsheng

doi:10.1007/s11769-013-0627-4

Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

doi: 10.1007/s11769-013-0627-4

WANG Lili^1,2,
YE Mei^1,2,
LI Qusheng^1,2,,
ZOU Hang^1,2,
ZHOU Yongsheng^1,2

1.
Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;
2.
Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China

基金项目: Foundation item: Under the auspices of National Natural Science Foundation of China (No. U0833002), National Science and Technology Support Program of China (No. 2012BAC07B05)

详细信息

通讯作者:
LI Qusheng,E-mail: liqusheng@21cn.com

Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

WANG Lili^1,2,
YE Mei^1,2,
LI Qusheng^{1,2
,},
ZOU Hang^1,2,
ZHOU Yongsheng^1,2

1.
Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;
2.
Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China

Funds: Foundation item: Under the auspices of National Natural Science Foundation of China (No. U0833002), National Science and Technology Support Program of China (No. 2012BAC07B05)

More Information

Corresponding author: LI Qusheng,E-mail: liqusheng@21cn.com

摘要: Phosphorus fractions and adsorption-release characteristics of sediments in the Zhujiang (Pearl) River estuary wetland were investigated. Results showed that the total phosphorus (TP) content in surface sediments ranged from 648.9 mg/kg to 1064.0 mg/kg; inorganic phosphorus (IP) was the major fraction of TP and ranged from 422.5 mg/kg to 643.9 mg/kg. Among the inorganic phosphorus, the main fractions were phosphorus bound to Al and Fe (Fe/Al-P), and calcium-bound phosphorus (Ca-P), accounting for 23%-42% and 21%-67% of IP, respectively. The vertical distribution of TP contents were significantly positive correlated with organic phosphorus (Org-P) and Fe/Al-P contents. The bio-available phosphorus contents in vertical sediments varied from 128.6 mg/kg to 442.9 mg/kg, mainly existed in Fe-Al/P fraction, and increased from the bottom to top sediments. The transport of phosphorus in sediment-water interface was controlled by the soil characteristics. The active Fe and Al content was considered as the main factor that determines adsorption capacity in vegetated marsh wetland. The P buffering capacity of the sediments in vegetated marsh wetland was greater than that in mudflat wetland. The potential risk of eutrophication in the study area is high. Reducing terrestrial phosphorus discharge and preventing the sediment Fe/Al-P release to the interstitial water are the possible solutions to reduce the risk of eutrophication in estuary wetlands, and planting vegetation in estuary wetland can also reduce the release of phosphorus in surface sediment.
- estuary wetland /
- phosphorus /
- fraction /
- adsorption-desorption
Abstract: Phosphorus fractions and adsorption-release characteristics of sediments in the Zhujiang (Pearl) River estuary wetland were investigated. Results showed that the total phosphorus (TP) content in surface sediments ranged from 648.9 mg/kg to 1064.0 mg/kg; inorganic phosphorus (IP) was the major fraction of TP and ranged from 422.5 mg/kg to 643.9 mg/kg. Among the inorganic phosphorus, the main fractions were phosphorus bound to Al and Fe (Fe/Al-P), and calcium-bound phosphorus (Ca-P), accounting for 23%-42% and 21%-67% of IP, respectively. The vertical distribution of TP contents were significantly positive correlated with organic phosphorus (Org-P) and Fe/Al-P contents. The bio-available phosphorus contents in vertical sediments varied from 128.6 mg/kg to 442.9 mg/kg, mainly existed in Fe-Al/P fraction, and increased from the bottom to top sediments. The transport of phosphorus in sediment-water interface was controlled by the soil characteristics. The active Fe and Al content was considered as the main factor that determines adsorption capacity in vegetated marsh wetland. The P buffering capacity of the sediments in vegetated marsh wetland was greater than that in mudflat wetland. The potential risk of eutrophication in the study area is high. Reducing terrestrial phosphorus discharge and preventing the sediment Fe/Al-P release to the interstitial water are the possible solutions to reduce the risk of eutrophication in estuary wetlands, and planting vegetation in estuary wetland can also reduce the release of phosphorus in surface sediment.
- estuary wetland /
- phosphorus /
- fraction /
- adsorption-desorption

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Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

doi: 10.1007/s11769-013-0627-4

通讯作者:
LI Qusheng,E-mail: liqusheng@21cn.com

Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

Corresponding author: LI Qusheng,E-mail: liqusheng@21cn.com

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Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

doi: 10.1007/s11769-013-0627-4

1. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;

2. Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China

通讯作者: LI Qusheng,E-mail: liqusheng@21cn.com

English Abstract

Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

1. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;

2. Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China

Corresponding author: LI Qusheng,E-mail: liqusheng@21cn.com

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Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

doi: 10.1007/s11769-013-0627-4

通讯作者: LI Qusheng,E-mail: liqusheng@21cn.com

Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

Corresponding author: LI Qusheng,E-mail: liqusheng@21cn.com

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Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

doi: 10.1007/s11769-013-0627-4

1. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China; 2. Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China

通讯作者: LI Qusheng,E-mail: liqusheng@21cn.com

English Abstract

Phosphorus Speciation in Wetland Sediments of Zhujiang (Pearl) River Estuary, China

1. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China; 2. Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China

Corresponding author: LI Qusheng,E-mail: liqusheng@21cn.com

全文HTML

目录

通讯作者:
LI Qusheng,E-mail: liqusheng@21cn.com

1. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;

2. Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China

1. Department of Environmental Engineering, Jinan University, Guangzhou 510632, China;

2. Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation, Department of Education of Guangdong Province, Guangzhou 510632, China