UM
Eutrophication analyses and principle component regression for two subtropical storage reservoirs in Macau
Weiying Zhang2; In Chio Lou2; Yijun Kong1; Wai Kin Ung1; Kai Meng Mok2
2013
Source PublicationDesalination and Water Treatment
ISSN1944-3994
Volume51Issue:37-39Pages:7331-7340
Abstract

Eutrophication analyses of two subtropical storage reservoirs in Macau, the Special Administrative Region of China, namely Main Storage Reservoir (MSR) and Sai Pa Van Reservoir (SPVR), were performed in this study. Totally, 17 monthly water parameters including, five hydrological parameters (precipitation, imported volume, exported volume, water level, and hydraulic retention time), four physical parameters (temperature, pH, turbidity, and conductivity), seven chemical parameters (dissolved oxygen, Ammonium, nitrite, nitrate, total nitrogen (TN), orthophosphate (PO), and total phosphorus (TP)), and one biological parameter (phytoplankton abundance) were sampled and monitored in 2010. The correlation analysis and principle component regression (PCR), that is, principle component analysis (PCA) followed by multiple linear regression (MLR), were used to simplify the complexity of the relationships and to predict the phytoplankton abundance levels as well. The eutrophication analyses results showed that both reservoirs were in eutrophic status with the trophic state indices of 58-72 for MSR and 51-71 for SPVR, respectively. Phytoplankton abundance in both reservoirs were found to be linearly correlated with turbidity, temperature, and TP, while anti-correlated with conductivity, TN, nitrate, TN/TP, and water level. The PCA showed that three PCs with Eigen value over one, can explain 84.6% of total variation of the water parameters in MSR, while only two PCs can explain 70.8% for SPVR. The MLR models can be used for predicting phytoplankton abundance in the reservoirs with the predictive power of 0.90 in MSR, while only of 0.67 in SPVR. 

KeywordEutrophication Analysis Phytoplankton Abundance Principle Component Regression Reservoirs
DOIhttps://doi.org/10.1080/19443994.2013.793921
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
WOS IDWOS:000327422500048
PublisherTAYLOR & FRANCIS INC, 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
Fulltext Access
Citation statistics
Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorIn Chio Lou
Affiliation1.Laboratory and Research Center, Macao Water Co. Ltd., SAR, Macau, P.R. China
2.Faculty of Science and Technology, Department of Civil and Environmental Engineering, University of Macau, Av. Padre Toma´s Pereira, Taipa, SAR, Macau, P.R. China
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Weiying Zhang,In Chio Lou,Yijun Kong,et al. Eutrophication analyses and principle component regression for two subtropical storage reservoirs in Macau[J]. Desalination and Water Treatment,2013,51(37-39):7331-7340.
APA Weiying Zhang,In Chio Lou,Yijun Kong,Wai Kin Ung,&Kai Meng Mok.(2013).Eutrophication analyses and principle component regression for two subtropical storage reservoirs in Macau.Desalination and Water Treatment,51(37-39),7331-7340.
MLA Weiying Zhang,et al."Eutrophication analyses and principle component regression for two subtropical storage reservoirs in Macau".Desalination and Water Treatment 51.37-39(2013):7331-7340.
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