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In-situ organic phosphorus mineralization in sediments in coastal wetlands with different flooding periods in the Yellow River Delta, China.
Sci Total Environ. 2019 Sep 10; 682:417-425.ST

Abstract

In-situ incubation experiments were performed in typical tidal flooding wetlands and seasonal flooding wetlands in the Yellow River Delta of China to investigate sediment organic phosphorus (OP) mineralization and its influencing factors. The results showed that the sediment net P mineralization rate (RNPM) exhibited consistent seasonal variations in both wetlands, and it was more stable in the tidal flooding wetlands than in the seasonal flooding wetlands. Sediment P mineralization was greatly influenced by plant uptake and flooding erosion, and the freshwater input by flow-sediment regulation replenished the inorganic phosphorus (IP) pool in the wetland sediments. The OP, IP and total P in the sediments of the tidal flooding wetlands were in a state of dynamic equilibrium throughout the plant growing season, and plant uptake peaked during the period from August to September. In the seasonal flooding wetlands, rainfall and flow-sediment regulation were the key factors influencing the conversion between OP and IP. Besides sediment salinity and pH, microbial biomass and enzyme activities were also the key factors influencing the sediment RNPM in both wetlands. The findings of this study indicated that flooding frequencies and salinity could highly impact sediment P mineralization, and that the IP levels in sediments might be influenced by wetland hydrology and salinity.

Authors+Show Affiliations

State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China. Electronic address: junhongbai@163.com.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31128361

Citation

Bai, Junhong, et al. "In-situ Organic Phosphorus Mineralization in Sediments in Coastal Wetlands With Different Flooding Periods in the Yellow River Delta, China." The Science of the Total Environment, vol. 682, 2019, pp. 417-425.
Bai J, Yu Z, Yu L, et al. In-situ organic phosphorus mineralization in sediments in coastal wetlands with different flooding periods in the Yellow River Delta, China. Sci Total Environ. 2019;682:417-425.
Bai, J., Yu, Z., Yu, L., Wang, D., Guan, Y., Liu, X., Gu, C., & Cui, B. (2019). In-situ organic phosphorus mineralization in sediments in coastal wetlands with different flooding periods in the Yellow River Delta, China. The Science of the Total Environment, 682, 417-425. https://doi.org/10.1016/j.scitotenv.2019.05.176
Bai J, et al. In-situ Organic Phosphorus Mineralization in Sediments in Coastal Wetlands With Different Flooding Periods in the Yellow River Delta, China. Sci Total Environ. 2019 Sep 10;682:417-425. PubMed PMID: 31128361.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - In-situ organic phosphorus mineralization in sediments in coastal wetlands with different flooding periods in the Yellow River Delta, China. AU - Bai,Junhong, AU - Yu,Zibo, AU - Yu,Lu, AU - Wang,Dawei, AU - Guan,Yanan, AU - Liu,Xinhui, AU - Gu,Chuanhui, AU - Cui,Baoshan, Y1 - 2019/05/16/ PY - 2019/01/22/received PY - 2019/05/03/revised PY - 2019/05/13/accepted PY - 2019/5/28/pubmed PY - 2019/8/9/medline PY - 2019/5/26/entrez KW - Flooding regime KW - Leaching loss KW - Net phosphorus mineralization KW - Plant uptake KW - Salinity SP - 417 EP - 425 JF - The Science of the total environment JO - Sci Total Environ VL - 682 N2 - In-situ incubation experiments were performed in typical tidal flooding wetlands and seasonal flooding wetlands in the Yellow River Delta of China to investigate sediment organic phosphorus (OP) mineralization and its influencing factors. The results showed that the sediment net P mineralization rate (RNPM) exhibited consistent seasonal variations in both wetlands, and it was more stable in the tidal flooding wetlands than in the seasonal flooding wetlands. Sediment P mineralization was greatly influenced by plant uptake and flooding erosion, and the freshwater input by flow-sediment regulation replenished the inorganic phosphorus (IP) pool in the wetland sediments. The OP, IP and total P in the sediments of the tidal flooding wetlands were in a state of dynamic equilibrium throughout the plant growing season, and plant uptake peaked during the period from August to September. In the seasonal flooding wetlands, rainfall and flow-sediment regulation were the key factors influencing the conversion between OP and IP. Besides sediment salinity and pH, microbial biomass and enzyme activities were also the key factors influencing the sediment RNPM in both wetlands. The findings of this study indicated that flooding frequencies and salinity could highly impact sediment P mineralization, and that the IP levels in sediments might be influenced by wetland hydrology and salinity. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/31128361/In_situ_organic_phosphorus_mineralization_in_sediments_in_coastal_wetlands_with_different_flooding_periods_in_the_Yellow_River_Delta_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(19)32209-0 DB - PRIME DP - Unbound Medicine ER -