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题名: Periphyton: an important regulator in optimizing soil phosphorus bioavailability in paddy fields
作者: Wu, Yonghong1; Liu, Junzhuo1; Lu, Haiying1; Wu, Chenxi2; Kerr, Philip3
关键词: Periphyton ; Phosphorus ; Bioavailability ; Paddy field
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
发表日期: 2016-11-01
DOI: 10.1007/s11356-016-7363-0
卷: 23, 期:21, 页:21377-21384
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Periphyton is ubiquitous in paddy field, but its importance in influencing the bioavailability of phosphorus (P) in paddy soil has been rarely recognized. A paddy field was simulated in a greenhouse to investigate how periphyton influences P bioavailability in paddy soil. Results showed that periphyton colonizing on paddy soil greatly reduced P content in paddy floodwater but increased P bioavailability of paddy soil. Specifically, all the contents of water-soluble P (WSP), readily desorbable P (RDP), algal-available P (AAP), and NaHCO3-extractable P (Olsen-P) in paddy soil increased to an extent compared to the control (without periphyton) after fertilization. In particular, Olsen-P was the most increased P species, up to 216 mg kg(-1) after fertilization, accounting for nearly 60 % of total phosphorus (TP) in soil. The paddy periphyton captured P up to 1.4 mg g(-1) with Ca-P as the dominant P fraction and can be a potential crop fertilizer. These findings indicated that the presence of periphyton in paddy field benefited in improving P bioavailability for crops. This study provides valuable insights into the roles of periphyton in P bioavailability and migration in a paddy ecosystem and technical support for P regulation.
关键词[WOS]: NUTRIENT-REMOVAL ; WATER ; SEDIMENTS ; ADSORPTION ; RELEASE ; SYSTEMS ; CHINA ; ALGAE
语种: 英语
项目资助者: State Key Basic Research Program of China(2015CB158200) ; National Natural Science Foundation of China(41422111) ; Natural Science Foundation of Jiangsu Province, China(BK20150066)
WOS记录号: WOS:000387599600024
ISSN号: 0944-1344
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/28687
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, 7 South Donghu Rd, Wuhan 430072, Peoples R China
3.Charles Sturt Univ, Sch Biomed Sci, Wagga Wagga, NSW 2678, Australia
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