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Occurrence of water phosphorus at the water-sediment interface of a freshwater shallow lake: Indications of lake chemistry
Pu, Xiao1,2; Cheng, Hongguang3; Tysklind, Mats4; Xie, Jing5; Lu, Lu5,6; Yang, Shengtian1
2017-10-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume81Pages:443-452
Corresponding AuthorCheng, Hongguang(chg@bnu.edu.cn)
AbstractBetter understanding of the occurrence of water phosphorus (P) at the water-sediment interface is vital to clarify P sources of origin in freshwater shallow lake ecosystems. This study focused on water-sediment interface systems and explored implicit indications of lake chemistry on water P based on a case study of Baiyangdian Lake, North China. 20 variables from 14 sampling sites collected for six months in two years were investigated, including sequentially extracted P fractions. Exploratory data analysis with multivariate statistical techniques and the index of P maximum solubilization potential were employed to examine interactions of water P and coexisting chemicals, and to accomplish pattern recognition of water-sediment interface systems. Results showed that nine key variables (temperature, conductivity, ammonium nitrogen, total nitrogen, sediment total P, metallic oxide bound P, organic P, aluminum and ferrum) were identified and ranked into four latent parameters (physical factors, nutrients, P species, and metals), accounting for 81% of water P variation. Accordingly, the recognized three patterns of water-sediment interface unraveled spatial partitioning for the domination of external or internal P sources. Four variables (temperature, sediment total P, metallic oxide bound P and organic P) were competent to classify patterns of water-sediment interface with 100% correct assignment of cases. Using two parameters (organic P and metallic oxide bound P), discriminant functions produced 85.7% correct assignations, indicating the importance of the two P species in explaining spatial heterogeneity of water P under oxic and alkaline circumstances. This study provides an operational zoning frame and implications for eutrophication management applicable to freshwater shallow lakes.
KeywordWater phosphorus Lake chemistry Phosphorus fractionation Exploratory data analysis Water-sediment interface
DOI10.1016/j.ecolind.2017.06.006
WOS KeywordEUTROPHICATION ; FRACTIONATION ; SPECIATION ; NITROGEN ; IMPACT ; CHINA ; FORMS ; RIVER
Indexed BySCI
Language英语
Funding Projectprojects of National Natural Science Foundation of China[41301529] ; projects of National Natural Science Foundation of China[41471396] ; projects of National Natural Science Foundation of China[41601581] ; GLOCOM project (EU FP7-People)[PIRSES-GA-2010-269233] ; National Science and Technology Support Plan during the 12th Five-year Plan Period of China[2015BAC02B02] ; Beijing Natural Science Foundation[8172015] ; China Postdoctoral Science Foundation[2016LH0002]
Funding Organizationprojects of National Natural Science Foundation of China ; GLOCOM project (EU FP7-People) ; National Science and Technology Support Plan during the 12th Five-year Plan Period of China ; Beijing Natural Science Foundation ; China Postdoctoral Science Foundation
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000417229100043
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/56811
Collection中国科学院地理科学与资源研究所
Corresponding AuthorCheng, Hongguang
Affiliation1.Beijing Normal Univ, Sch Geog, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China
2.Capital Normal Univ, Coll Resource Environm & Tourism, Beijing 100048, Peoples R China
3.Beijing Normal Univ, Sch Environm, Beijing 100875, Peoples R China
4.Umea Univ, Dept Chem, S-90187 Umea, Sweden
5.Chinese Acad Environm Planning, Beijing 100012, Peoples R China
6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Pu, Xiao,Cheng, Hongguang,Tysklind, Mats,et al. Occurrence of water phosphorus at the water-sediment interface of a freshwater shallow lake: Indications of lake chemistry[J]. ECOLOGICAL INDICATORS,2017,81:443-452.
APA Pu, Xiao,Cheng, Hongguang,Tysklind, Mats,Xie, Jing,Lu, Lu,&Yang, Shengtian.(2017).Occurrence of water phosphorus at the water-sediment interface of a freshwater shallow lake: Indications of lake chemistry.ECOLOGICAL INDICATORS,81,443-452.
MLA Pu, Xiao,et al."Occurrence of water phosphorus at the water-sediment interface of a freshwater shallow lake: Indications of lake chemistry".ECOLOGICAL INDICATORS 81(2017):443-452.
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