Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution P-31-nuclear magnetic resonance and enzymatic hydrolysis
文献类型：期刊论文
| 作者 | Qu, Ying2; Wang, Chao2; Guo, Jinsong2; Huang, Junjie2; Fang, Fang2; Xiao, Yan1 ; Ouyang, Wenjuan1; Lu, Lunhui1
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| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 255页码:9 |
| 关键词 | Three Gorges Reservoir Water-level fluctuation zone Enzymatic hydrolysis organic phosphorus Solution P-31-NMR Eutrophication |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2019.113209 |
| 通讯作者 | Guo, Jinsong(Guo0768@cqu.edu.cn) |
| 英文摘要 | Phosphorus (P) is an essential nutrient element for biological growth that can contribute to eutrophication in aquatic ecosystems. Water trophic status and algae growth are primarily related to the content of bioavailable P, which is primarily related to enzymatically hydrolysable organic P(EHOP) and dissolved inorganic P(IP). In this study, soil samples from the water-level fluctuation zone (WLFZ) were collected from a tributary of the Three Gorges Reservoir (TGR) to characterize the properties of organic P(OP) fractions using solution P-31-nuclear magnetic resonance (NMR) and enzymatic hydrolysis. P-31-NMR showed that orthophosphate was the main part of the bioavailable P in the WLFZ soil and accounted for 80.4% of the NaOH-EDTA extractable total P (NaOH-EDTA TP), while phosphate monoester accounted for 60.5% of NaOH-EDTA extractable OP (NaOH-EDTA OP). The soil properties and replenishment from the mainstream of the Yangtze River to the Pengxi River have a certain effect on the content and distribution of P forms in the WLFZ soil of the tributary. The EHOP accounted for 28.1% of the NaOH-EDTA OP, and a significant positive correlation was observed between labile monoester P and EHOP and organic matter (OM). The water-soluble OP(H2O-OP), bicarbonate-extractable OP(NaHCO3-OP), and Fe- and Al-associated OP(Fe/Al-OP) were significantly hydrolyzed by phosphatase and thus exhibited great release potential. The ranking of the bioavailability of OP was Fe/Al-OP > H2O-OP > NaHCO3-OP. Phytate-like P were mainly found in H2O-OP and NaHCO3-OP, which indicated that periodic submersion-emersion cycles promoted the release of phytate-like P from Fe/Al-OP into the water column of the TGR These observations suggest that when the external P input was effectively controlled, a huge risk of release of the internal OP from the WLFZ soil, and the biogeochemical cycling of the bioavailable P played an important role in maintaining the eutrophication of the reservoir. (C) 2019 Elsevier Ltd. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[41430750] ; National Natural Science Foundation of China[41771520] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000498340400039 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/9984]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Guo, Jinsong |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Environm, Chongqing 400714, Peoples R China 2.Chongqing Univ, Key Lab Three Gorges Reservoir Reg EcoEnvironm MO, Chongqing 400045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Ying,Wang, Chao,Guo, Jinsong,et al. Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution P-31-nuclear magnetic resonance and enzymatic hydrolysis[J]. ENVIRONMENTAL POLLUTION,2019,255:9. |
| APA | Qu, Ying.,Wang, Chao.,Guo, Jinsong.,Huang, Junjie.,Fang, Fang.,...&Lu, Lunhui.(2019).Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution P-31-nuclear magnetic resonance and enzymatic hydrolysis.ENVIRONMENTAL POLLUTION,255,9. |
| MLA | Qu, Ying,et al."Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution P-31-nuclear magnetic resonance and enzymatic hydrolysis".ENVIRONMENTAL POLLUTION 255(2019):9. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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