Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.landurbplan.2018.04.005 |
Phosphorus dynamics influenced by anthropogenic calcium in an urban stream flowing along an increasing urbanization gradient | |
Wu, Pengbao1,2; Yin, Aijing3; Fan, Manman1; Wu, Jingtao1; Yang, Xiaohui1; Zhang, Huan1; Gao, Chao1 | |
2018-09-01 | |
发表期刊 | LANDSCAPE AND URBAN PLANNING
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ISSN | 0169-2046 |
EISSN | 1872-6062 |
出版年 | 2018 |
卷号 | 177页码:1-9 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Calcium (Ca) concentrations are commonly elevated in urban soils and sediments mainly due to the degradation of artificial Ca-rich materials. However, the influence of anthropogenic Ca on pollutant behaviour remains largely unknown. In this study, we aim to contribute to a better understanding of the accumulation of anthropogenic Ca and its mechanism for regulating the phosphorus (P) behaviour in the sediments of an urban stream flowing along an increasing urban land use in eastern China. The CaO content in sediments increased with the increasing urban land use and was significantly associated with the sampling distance from suburban to urban areas of the river (p < 0.05). Calcium carbonate contributed 34.4% to 58.9% of the total Ca. The results show that iron-bound P (FeP) and authigenic Ca-bound P (CaP) were the dominant P fractions in the river sediment and accounted for 41.7% and 40.7% of the total P (TP) on average, respectively. Compared to the rural upstream areas of the river, the proportion of FeP in TP decreased significantly in the urban downstream areas, whereas the proportions of total Ca-bound P increased in the downstream areas. The results of the correlation analyses between the elevated Ca and P fractions suggest that the anthropogenic Ca that was enriched in the sediments could facilitate the formation of Ca-bound P. Combined with the water quality parameters, our results suggests that the elevated Ca in the sediments might first precipitate with phosphate as metastable minerals in the interstitial water and then transform to thermodynamically stable apatite. |
英文关键词 | SEDEX P fractions Urban stream Qinhuai River Urban karst |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000437967500001 |
WOS关键词 | TEMPORAL PATTERNS ; WATER-QUALITY ; WASTE-WATER ; PHOSPHATE ; SEDIMENTS ; PRECIPITATION ; RIVER ; CHINA ; MECHANISMS ; SPECIATION |
WOS类目 | Ecology ; Environmental Studies ; Geography ; Geography, Physical ; Regional & Urban Planning ; Urban Studies |
WOS研究方向 | Environmental Sciences & Ecology ; Geography ; Physical Geography ; Public Administration ; Urban Studies |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24863 |
专题 | 资源环境科学 |
作者单位 | 1.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China; 2.Huizhou Univ, Sch Geog & Tourism, Huizhou 516007, Guangdong, Peoples R China; 3.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Pengbao,Yin, Aijing,Fan, Manman,et al. Phosphorus dynamics influenced by anthropogenic calcium in an urban stream flowing along an increasing urbanization gradient[J]. LANDSCAPE AND URBAN PLANNING,2018,177:1-9. |
APA | Wu, Pengbao.,Yin, Aijing.,Fan, Manman.,Wu, Jingtao.,Yang, Xiaohui.,...&Gao, Chao.(2018).Phosphorus dynamics influenced by anthropogenic calcium in an urban stream flowing along an increasing urbanization gradient.LANDSCAPE AND URBAN PLANNING,177,1-9. |
MLA | Wu, Pengbao,et al."Phosphorus dynamics influenced by anthropogenic calcium in an urban stream flowing along an increasing urbanization gradient".LANDSCAPE AND URBAN PLANNING 177(2018):1-9. |
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