Dynamic multivariate analysis for pollution assessment and river habitat conservation in the Vietnamese La Buong watershed.

Autor: Pham LH; Center of Water Management and Climate Change, Institute of Environment and Resources, Vietnam National University - Ho Chi Minh City, 01 Marie Curie, Linh Trung ward, Thu Duc district, Ho Chi Minh City, Vietnam.; Vietnam National University, Ho Chi Minh City, Vietnam., Tran DD; Center of Water Management and Climate Change, Institute of Environment and Resources, Vietnam National University - Ho Chi Minh City, 01 Marie Curie, Linh Trung ward, Thu Duc district, Ho Chi Minh City, Vietnam. dungtranducvn@yahoo.com.; Vietnam National University, Ho Chi Minh City, Vietnam. dungtranducvn@yahoo.com., Le TDH; Faculty of Resources and Environment, University of Thu Dau Mot, 06 Tran Van On street, Thu Dau Mot City, Binh Duong, 820000, Vietnam., Dinh QT; Department of Science and Technology of Thanh Hoa, Thanh Hoa, Vietnam., Khoi DN; Faculty of Environment, University of Science, 227 Nguyen Van Cu Str., Dist. 5, Ho Chi Minh City, Vietnam.; Vietnam National University, Ho Chi Minh City, Vietnam., Hue NTT; Center of Water Management and Climate Change, Institute of Environment and Resources, Vietnam National University - Ho Chi Minh City, 01 Marie Curie, Linh Trung ward, Thu Duc district, Ho Chi Minh City, Vietnam.; Vietnam National University, Ho Chi Minh City, Vietnam., Au NH; Institute of Environment and Resources, National University of Ho Chi Minh City, Ho Chi Minh City, Vietnam., Anh DT; HUTECH University, 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, Vietnam., Quan NH; Center of Water Management and Climate Change, Institute of Environment and Resources, Vietnam National University - Ho Chi Minh City, 01 Marie Curie, Linh Trung ward, Thu Duc district, Ho Chi Minh City, Vietnam.; Institute for Circular Economy Development (ICED), Vietnam National University - Ho Chi Minh City, 01 Marie Curie, Linh Trung ward, Thu Duc district, Ho Chi Minh City, Vietnam.
Jazyk: angličtina
Zdroj: Environmental monitoring and assessment [Environ Monit Assess] 2022 Oct 18; Vol. 194 (Suppl 2), pp. 774. Date of Electronic Publication: 2022 Oct 18.
DOI: 10.1007/s10661-022-10184-8
Abstrakt: Analysis of temporal patterns of high-dimensional time-series water quality data is essential for pollution management worldwide. This study has applied dynamic factor analysis (DFA) and cluster analysis (CA) to analyze time-series water quality data monitored at the five stations installed along the La Buong river in Southern Vietnam. Application of the DFA identified two types of temporal patterns, one of the run-off driven parameters (total suspended solid (TSS), turbidity, and iron) and the other of diffuse source pollution. The association of the variables like BOD 5 and COD at most stations to the run-off-driven parameters revealed their sharing of drivers. On the contrary, separating variables like phosphate (PO 4 3 ) at the three upstream stations from the run-off patterns suggested their local point-source origin. The DFA-derived factors were later used in the time-point CA to explore the seasonality of water quality parameters and their pollution intensities compared to regulatory levels. The result suggested intensification in wet season of Fe, TSS, BOD 5 , and COD concentrations at most sites, which are unobservable in run-off detached parameters like reactive nitrogen, phosphate (PO 4 3- ), and E. coli. These findings generated robust insights to support water quality management for river habitat conservation.
(© 2022. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
Databáze: MEDLINE
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