Feifei Zheng, Tao Lin, Jixing Dong, Anyan Li, Yuanbin Tian
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
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.
 Kowalczewska MK, Dondajewska R, Goldyn R. Total phosphorus and organic matter content in bottom sediments of lake under restoration measures with iron treatment. Limnological Review, 2010, 10 (3-4): 139-145. DOI: 10.2478/v10194-011-0016-2.
 Søndergaard M, Bjerring R, Jeppesen E. Persistent internal phosphorus loading during summer in shallow eutrophic lakes. Hydrobiologia, 2013, 710 (1): 95-107. DOI: 10.1007/s10750-012-1091-3.
 Pan CJ, Li R, Tang XQ, et al. Assessment of Physico-chemical Properties and Phosphorus Fraction Distribution Characteristics in Sediments after Impounding of the Three Gorges Reservoir to 175m. Environmental Science, 2018, 39 (06): 2615-2623. DOI:10.13227/j.hjkx.201708175.
 Luo Yh, Nie Xq, Li XL, et al. Distribution and emission flux estimation of phosphorus in the sediment and interstitial water of Xiangxi River. Environmental Science, 2017, 38 (06): 2345-2354. DOI: 10. 13227/ j.hjkx.201610114.
 Gu XZ, Zhang L, Bo X, et al. Characteristics of sediments and pore water in Lake Nansi Wetland. Environmental Science, 2010, 31(04): 939-945. DOI: 10.13227/j.hjkx.2010.04.006.
 Sun WB, Du B, Zhao XL, et al. Fractions and adsorption characteristics of phosphorus on sediments and soils in water level fluctuating zone of the Pengxi River, a tributary of the Three Gorges Reservoir. Environmental Science, 2013, 34 (3): 1107-1113. DOI: 10.13227/j.hjkx.2013.03.038.
 Ma LM, Zhang M, Teng YH, et al. Characteristics of phosphorous release from soil in periodic alternately waterlogged and drained environments at WFZ of the Three Gorges Reservoir. Environmental Science, 2008, 29 (4): 1035-1039. DOI: 10.13227/j.hjkx. 2008.04.023.
 Markovic S, et al. Biogeochemical mechanisms controlling phosphorus diagenesis and internal loading in a remediated hard water eutrophic embayment. Chemical Geology, 2019, 514: 122-137. DOI: 10.1016/j.chemgeo.2019.03.031.
 Rydin E, Kumblad L, Wulff F, et al. Remediation of a eutrophic bay in the Baltic Sea. Environmental Science&Technology, 2017, 51(8): 4559-4566. DOI: 10. 1021/acs.est.6b06187.
 Zheng J, Wang ZJ, Yu LF, et al. Ecological risk assessment of Caohai watershed based on landscape pattern. Environmental Chemistry, 2019, 38 (4): 784-792. DOI: 10. 7524/j.issn.0254-6108.2018061401.
 Tang XC, Lin T, Xia PH, et al. Speciation distribution and risk assessment of Hg and As in sediment of Lake Caohai wetlands under different water level gradients, Guizhou Province. Journal of Lake Sciences, 2020, 32(01): 100-110. DOI: 10.18307/2020.0110.
 Fan MM, Xia PH, Chen WS, et al. Metal (loid) accumulation levels in submerged macrophytes and epiphytic biofilms and correlations with metal (loid) levels in the surrounding water and sediments. Science of The Total Environment, 2021, 758: 143-878. DOI: 10.1016/J.SCITOTENV.2020.143878.
 Yu BX, Xia PH, Ge H, et al. Preservation and release risk of phosphorus in sediments from karst wetland in Caohai, Guizhou. Environmental Chemistry, 2019, 38 (3): 653-661. DOI: 10. 7524/ j. issn. 0254-6108. 2018082101.
 Wang TY, Xia PH, Lin T, et al. Ecological stoichiometry of carbon, nitrogen, and phosphorus of periphyton in different habitats of Caohai Wetland, Guizhou Province. Journal of Lake Sciences, 2021, 33 (03): 774-784. DOI: 10.18307/2021.0313.
 Hupfer M, Gfichter R, Giovano R, et al. Transformation of phosphorus species in settling seston and during early sediment diagenesis. Aquatic Sciences, 1995, 57 (4): 305-324.
 Kaspar HF, Asher RA, Boyer IC. Microbial nitrogen transformations in sediments and inorganic nitrogen fluxes across the sediment/water interface on the South Island West Coast, New Zealand. Estuarine, Coastal and Shelf Science, 1985, 21 (2): 245-255.
 Ullman WJ, Sandstrom MW. Dissolved nutrient fluxes from the nearshore sediments of bowling Green bay, central great barrier reef lagoon (Australia). Estuarine, Coastal and Shelf Science, 1987, 24 (3): 289-303.
 Urban NR, Dinkel C, Wehrli B. Solute transfer across the sediment surface of a eutrophic lake: I. Porewater profiles from dialysis samplers. Aquatic Sciences, 1997, 59 (1): 1-25.
 Leivuori M, Niemistö L. Sedimentation of trace metals in the Gulf of Bothnia. Chemosphere, 1995, 31: 3839-3856. DOI: 10.1016/0045-6535(95)00257-9.
 Xu MJ, Yu L, Zhao YW, et al. The Simulation of Shallow Reservoir Eutrophication Based on MIKE21: A Case Study of Douhe Reservoir in North China. Procedia Environmental Sciences, 2012, 13: 1975-1988. DOI: 10.1016/j.proenv. 2012.01.191.
 Li B, Ding SM, Fan CX, et al. Estimation of releasing fluxes of sediment nitrogen and phosphorus in Fubao Bay in Dianchi Lake. Environmental Science, 2008, 29 (1): 114-120. DOI: 10. 13227/ j. hjkx. 2008. 01.031.
 Zhang L, Fan CX, Wang JJ, et al. Space-Time Dependent Variances of Ammonia and Phosphorus Flux on Sediment-Water Interface in Lake Taihu. Environmental Science, 2006 (08): 1537-1543. DOI: 10.13227/j.hjkx. 2006.08.011.
 Pan X, Lin L, Huang Z, et al. Dietribution characteristics and pollution risk evaluation of the nitrogen and phosphorus species in the sediments of Lake Erhai, Southwest China. Environmental science and pollution research, 2019, 26 (22): 22295-22304. DOI: 10.1007/s11356-019-05489-0.