1. H.T. Aboelnga, L. Ribbe, F.-B. Frechen, J. Saghir, Urban water security: definition and assessment framework, Resources, 8 (2019) 178, doi: 10.3390/resources8040178.
  2. U. Schirpke, L. Egarter Vigl, E. Tasser, U. Tappeiner, Analyzing spatial congruencies and mismatches between supply, demand and flow of ecosystem services and sustainable development, Sustainability, 11 (2019) 2227, doi: 10.3390/su11082227.
  3. Q. Ding, L. Wang, M. Fu, N. Huang, An integrated system for rapid assessment of ecological quality based on remote sensing data, Environ. Sci. Pollut. Res., 27 (2020) 32779–32795.
  4. X. Wang, Y. Chen, Z. Li, G. Fang, Y. Wang, Development and utilization of water resources and assessment of water security in Central Asia, Agric. Water Manage., 240 (2020) 106297, doi: 10.1016/j.agwat.2020.106297.
  5. R. Hu, Pollution control and remediation of rural water resource based on urbanization perspective, Environ. Technol. Innovation, 20 (2020) 101136, doi: 10.1016/j.eti.2020.101136.
  6. H. Yasmeen, Q. Tan, H. Zameer, J. Tan, K. Nawaz, Exploring the impact of technological innovation, environmental regulations and urbanization on ecological efficiency of China in the context of COP21,
    J. Environ. Manage., 274 (2020) 111210, doi: 10.1016/j.jenvman.2020.111210.
  7. D. Kirikkaleli, J.K. Sowah, A wavelet coherence analysis: nexus between urbanization and environmental sustainability, Environ. Sci. Pollut. Res., 27 (2020) 30295–30305.
  8. A.R. Afitiri, F.A. Armah, E.K. Afrifa, B. Ekumah, The joint effect of natural and human-induced environmental factors on surface water quality in the Birim North District of Ghana, Water Pract. Technol., 15 (2020) 605–618.
  9. A. Mebarkia, A. Boufekane, Human activity impact on surface water quality in semi-arid regions: a case study of Aïnzeda lake (North-East Algeria), Water Supply, 20 (2020) 1726–1744.
  10. M. Varol, Spatio-temporal changes in surface water quality and sediment phosphorus content of a large reservoir in Turkey, Environ. Pollut., 259 (2020) 113860, doi: 10.1016/j. envpol.2019.113860.
  11. C. Paijens, A. Bressy, B. Frère, B. Tedoldi, D. Mailler, R. Rocher, V.P. Neveu, R. Moilleron, Urban pathways of biocides towards surface waters during dry and wet weathers: assessment at the Paris conurbation scale,
    J. Hazard Mater., 402 (2020) 123765, doi: 10.1016/j.jhazmat.2020.123765.
  12. Y. Li, S. Cui, B. Gao, J. Tang, W. Huang, Y. Huang, Modeling nitrogen flow in a coastal city—a case study of Xiamen in 2015, Sci. Total Environ., 735 (2020) 139294, doi: 10.1016/j. scitotenv.2020.139294.
  13. N. Aryal, J. Wood, I. Rijal, D. Deng, M.K. Jha, A. Ofori-Boadu, Fate of environmental pollutants: a review, Water Environ. Res., 92 (2020) 1587–1594.
  14. P. Li, W. Feng, C. Xue, R. Tian, S. Wang, Spatiotemporal variability of contaminants in lake water and their risks to human health: a case study of the Shahu Lake tourist area, northwest China, Exposure Health, 9 (2017) 213–225.
  15. Q. Quan, R. Tong, W. Sun, Y. Zhao, J. Yu, G. Wang, S. Shrestha, Y. Jin, Anthropogenic influences on the water quality of the Baiyangdian Lake in North China over the last decade, Sci. Total Environ., 701 (2020) 134929, doi: 10.1016/j.scitotenv.2019.134929.
  16. J. Wu, C. Xue, R. Tian, S. Wang, Lake water quality assessment: a case study of Shahu Lake in the semi-arid loess area of northwest China, Environ. Earth Sci., 76 (2017) 232, doi: 10.1007/ s12665-017-6516-x.
  17. J. Wang, Z. Fu, H. Qiao, F. Li, Assessment of eutrophication and water quality in the estuarine area of Lake Wuli, Lake Taihu, China, Sci. Total Environ., 650 (2019) 1392–1402.
  18. A. Davraz, S. Varol, E. Sener, S. Sener, F. Aksever, B. Kirkan, A. Tokgözlü, Assessment of water quality and hydrogeochemical processes of Salda alkaline lake (Burdur, Turkey), Environ. Monit. Assess., 191 (2019) 71, doi: 10.1007/s10661-019-7889-y.
  19. A.U. Alam, D. Clyne, H. Jin, N. Hu, M.J. Deen, Fully integrated, simple, and low-cost electrochemical sensor array for in situ water quality monitoring, ACS Sens., 5 (2020) 412–422.
  20. E. Kumpel, C. MacLeod, K. Stuart, A. Cock-Esteb, P. Khush, R. Peletz, From data to decisions: understanding information flows within regulatory water quality monitoring programs, npj Clean Water, 3 (2020) 38, doi:10.1038/s41545-020-00084-0.
  21. K. Haldar, K. Kujawa-Roeleveld, P. Dey, S. Bosu, D.K. Datta, H.H. Rijnaarts, Spatio-temporal variations in chemical-physical water quality parameters influencing water reuse for irrigated agriculture in tropical urbanized deltas, Sci. Total Environ., 708 (2020) 134559, doi: 10.1016/j.scitotenv.2019.134559.
  22. S. Jehan, I. Ullah, S. Khan, S. Muhammad, S.A. Khattak, T. Khan, Evaluation of the Swat River, Northern Pakistan, water quality using multivariate statistical techniques and water quality index (WQI) model, Environ. Sci. Pollut. Res., 27 (2020) 38545–38558.
  23. S.M. Njuguna, J.A. Onyango, K.B. Githaiga, R.W. Gituru, X. Yan, Application of multivariate statistical analysis and water quality index in health risk assessment by domestic use of river water. Case study of Tana River in Kenya, Process Saf. Environ. Prot., 133 (2020) 149–158.
  24. B.A. Berhe, Evaluation of groundwater and surface water quality suitability for drinking and agricultural purposes in Kombolcha town area, eastern Amhara region, Ethiopia, Appl. Water Sci., 10 (2020) 127, doi:10.1007/s13201-020-01210-6.
  25. J. Wu, P. Li, H. Qian, Z. Duan, X. Zhang, Using correlation and multivariate statistical analysis to identify hydrogeochemical processes affecting the major ion chemistry of waters: case study in Laoheba phosphorite mine in Sichuan, China, Arabian J. Geosci., 7 (2014) 3973–3982.
  26. P. Li, R. Tian, R. Liu, Solute geochemistry and multivariate analysis of water quality in the Guohua Phosphorite Mine, Guizhou Province, China, Exposure Health, 11 (2019) 81–94.
  27. J. Wu, P. Li, D. Wang, X. Ren, M. Wei, Statistical and multivariate statistical techniques to trace the sources and affecting factors of groundwater pollution in a rapidly growing city on the Chinese Loess Plateau, Hum. Ecol. Risk Assess., 26 (2020) 1603–1621.
  28. Y. Anteneh, G. Zeleke, E. Gebremariam, Assessment of surface water quality in legendaria and Dire catchments, Central Ethiopia, using multivariate statistical analysis, Acta Ecol. Sin., 38 (2018) 81–95.
  29. A.D. Yetis, F. Akyuz, Water quality evaluation by using multivariate statistical techniques and pressure‑impact analysis in wetlands: Ahlat Marshes, Turkey, Environ. Dev. Sustainability, 23 (2021) 969–988.
  30. G. Qin, J. Liu, S. Xu, T. Wang, Water quality assessment and pollution source apportionment in a highly regulated river of Northeast China, Environ. Monit. Assess., 192 (2020) 446,
  31. T. Marara, L.G. Palamuleni, A spatiotemporal analysis of water quality characteristics in the Klip river catchment, South Africa, Environ. Monit. Assess., 192 (2020) 578, doi: 10.1007/ s10661-020-08441-9.
  32. A. Barakat, M. El Baghdadi, J. Rais, B. Aghezzaf, M. Slassi, Assessment of spatial and seasonal water quality variation of Oum Er Rbia River (Morocco) using multivariate statistical techniques, Int. Soil Water Conserv. Res., 4 (2016) 284–292.
  33. F. Ustaoğlu, Y. Tepe, Water quality and sediment contamination assessment of Pazarsuyu Stream, Turkey using multivariate statistical methods and pollution indicators, Int. Soil Water Conserv. Res., 7 (2018) 47–56.
  34. M. Sebastián Gradilla-Hernández, J. de Anda, A. Garcia-Gonzalez, D. Meza-Rodríguez, C. Yebra Montes,
    Y. Perfecto-Avalos, Multivariate water quality analysis of Lake Cajititlán, Mexico, Environ. Monit. Assess., 192 (2020) 5, doi: 10.1007/s10661-019-7972-4.
  35. I.G. Hatvani, V.D. Barros, P. Tanos, J. Kovács, I.S. Kovács, A. Clement, Spatiotemporal changes and drivers of trophic status over three decades in the largest shallow lake in Central Europe, Lake Balaton, Ecol. Eng., 151 (2020) 105861, doi: 10.1016/j.ecoleng.2020.105861.
  36. X. Hou, L. Feng, J. Tang, X.P. Song, B.A. Bryan, Anthropogenic transformation of Yangtze plain freshwater lakes: patterns, drivers and impacts, Remote Sens. Environ., 248 (2020) 111998, doi: 10.1016/j.rse.2020.111998.
  37. M. Kumarin, S. Tripathin, V. Pathakn, B.D. Tripathin, Chemometric characterization of river water quality, Environ. Monit. Assess., 185 (2013) 3081–3089.
  38. H. Yang, Z. Shen, J. Zhang, W. Wang, Water quality characteristics along the course of the Huangpu River,
    J. Integr. Environ. Sci., 19 (2007) 1193–1198.
  39. C.W. Liu, K.H. Lin., Y.M. Kuo, Application of factor analysis in the assessment of groundwater quality in a blackfoot disease area in Taiwan, Sci. Environ., 313 (2003) 77–89.
  40. X. Jiang, S. Wang, L. Zhong, X. Jin, S. Sun, Seasonal variation characteristics of Algae biomass in Chaohu Lake, Environ. Sci., 31 (2010) 2056–2062 (in Chinese).