Phosphorus Bioavailability and Release Potential Risk of the Sediments in the Coastal Wetland: A Case Study of Rongcheng Swan Lake, Shandong, China
Gao, Li1; Zhang, Luhua1; Shao, Hongbo2,3; Gao, L (reprint author), Yantai Univ, Ocean Sch, 32 Qingquan Rd, Yantai 264005, Peoples R China. ligao117@126.com
2014-07-01
发表期刊CLEAN-SOIL AIR WATER
ISSN1863-0650
卷号42期号:7页码:963-972
产权排序[Gao, Li; Zhang, Luhua] Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China; [Shao, Hongbo] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Resources Utilizat, Yantai, Peoples R China; [Shao, Hongbo] QUST, Inst Life Sci, Qingdao, Peoples R China
摘要Rongcheng Swan Lake, a natural coastal wetland, is connected to Rongcheng Bay of Yellow Sea, China. In this lagoon, water quality has deteriorated gradually in recent 30 years and filamentous Chaetomorpha linum have bloomed during the past five years. In present study, the concentration, fractions, and bioavailability of phosphorus (P) in surface sediments were investigated throughout the lake. In order to evaluate P retention ability of the wetland, six sediment samples from different lake regions were collected to study P adsortion kinetics, adsortion capacity and the relation to sediment properties. In Swan Lake, total P concentrations in sediments varied from 79 to 616 mg/kg, which were significantly higher in northwest region than those in southeast region. Sediment grain size and external inputs were the main factors affecting P distribution. Inorganic P concentration was obviously higher than that of organic P, and Ca-P was the important form in the sediments. Fe/Al-P showed a large spatial variation, with relatively high concentrations occurring at the northeastern corner and the western tip strongly affected by the discharge of wastewater. The adsorption isotherms were well fitted by Linear equation at low P conditions and by Langmuir equation at high initial P concentrations, respectively. The sediments in the northern and central lake had higher P adsorption capacity, while in southern lake the degree of P saturation of the sediments was high. Ammonium oxalate extractable Al, organic matter, and fine particle were important factors influencing P adsorption. In Swan Lake, algae available P (AAP) was the largest form of bioavailable P, followed by Olsen-P; moreover, AAP and Olsen-P showed significant correlations with Fe/Al-P. As a whole, TP concentration in sediments from Swan Lake was low, and the sediments at most regions had buffering ability for P in overlying water; while at the western tip of lake where macroalgal blooms frequently breakout, AAP concentration was relatively high and the sediments had higher potential for releasing P into water column.; Rongcheng Swan Lake, a natural coastal wetland, is connected to Rongcheng Bay of Yellow Sea, China. In this lagoon, water quality has deteriorated gradually in recent 30 years and filamentous Chaetomorpha linum have bloomed during the past five years. In present study, the concentration, fractions, and bioavailability of phosphorus (P) in surface sediments were investigated throughout the lake. In order to evaluate P retention ability of the wetland, six sediment samples from different lake regions were collected to study P adsortion kinetics, adsortion capacity and the relation to sediment properties. In Swan Lake, total P concentrations in sediments varied from 79 to 616 mg/kg, which were significantly higher in northwest region than those in southeast region. Sediment grain size and external inputs were the main factors affecting P distribution. Inorganic P concentration was obviously higher than that of organic P, and Ca-P was the important form in the sediments. Fe/Al-P showed a large spatial variation, with relatively high concentrations occurring at the northeastern corner and the western tip strongly affected by the discharge of wastewater. The adsorption isotherms were well fitted by Linear equation at low P conditions and by Langmuir equation at high initial P concentrations, respectively. The sediments in the northern and central lake had higher P adsorption capacity, while in southern lake the degree of P saturation of the sediments was high. Ammonium oxalate extractable Al, organic matter, and fine particle were important factors influencing P adsorption. In Swan Lake, algae available P (AAP) was the largest form of bioavailable P, followed by Olsen-P; moreover, AAP and Olsen-P showed significant correlations with Fe/Al-P. As a whole, TP concentration in sediments from Swan Lake was low, and the sediments at most regions had buffering ability for P in overlying water; while at the western tip of lake where macroalgal blooms frequently breakout, AAP concentration was relatively high and the sediments had higher potential for releasing P into water column.
关键词Bioavailable p Lake Water Release Risk Sediment Composition Wetland
作者部门海岸带生物学与生物资源利用所重点实验室
学科领域Environmental Sciences ; Marine & Freshwater Biology ; Water Resources
DOI10.1002/clen.201300209
项目资助者Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
收录类别SCI
关键词[WOS]YELLOW-RIVER DELTA ; ADSORPTION CHARACTERISTICS ; FRACTIONS ; RETENTION ; DYNAMICS ; SORPTION ; SOILS ; NITROGEN ; ECOLOGY ; ESTUARY
文章类型Article
语种英语
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS记录号WOS:000339476200013
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/8543
专题海岸带生物学与生物资源利用所重点实验室
通讯作者Gao, L (reprint author), Yantai Univ, Ocean Sch, 32 Qingquan Rd, Yantai 264005, Peoples R China. ligao117@126.com
作者单位1.Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Resources Utilizat, Yantai, Peoples R China
3.QUST, Inst Life Sci, Qingdao, Peoples R China
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Gao, Li,Zhang, Luhua,Shao, Hongbo,et al. Phosphorus Bioavailability and Release Potential Risk of the Sediments in the Coastal Wetland: A Case Study of Rongcheng Swan Lake, Shandong, China[J]. CLEAN-SOIL AIR WATER,2014,42(7):963-972.
APA Gao, Li,Zhang, Luhua,Shao, Hongbo,&Gao, L .(2014).Phosphorus Bioavailability and Release Potential Risk of the Sediments in the Coastal Wetland: A Case Study of Rongcheng Swan Lake, Shandong, China.CLEAN-SOIL AIR WATER,42(7),963-972.
MLA Gao, Li,et al."Phosphorus Bioavailability and Release Potential Risk of the Sediments in the Coastal Wetland: A Case Study of Rongcheng Swan Lake, Shandong, China".CLEAN-SOIL AIR WATER 42.7(2014):963-972.
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