Sains Malaysiana 42(5)(2013): 587–596

 

Analisis Kualiti Air Tasik Chini Menggunakan Pendekatan Multivariat

(Lake Chini Water Quality Assessment Using Multivariate Approach)

 

A.K. Ahmad*, M. Shuhaimi Othman, E.C. Lim& Z. Abd. Aziz

Pusat Pengajian Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi

Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

 

Diserahkan: 12 Jun 2012/Diterima: 2 Oktober 2012

 

ABSTRAK

Satu analisis penentuan parameter kualiti air yang penting untuk penilaian ekosistem cetek telah dilakukan menggunakan kaedah multivariat. Sebanyak 14 parameter kualiti air yang melibatkan komponen biologi, fizik dan kimia telah dikumpulkan setiap bulan selama satu tahun. Data dianalisis menggunakan ujian faktor yang melibatkan tiga proses iaitu mengenal pasti korelasi antara faktor, mengekstrak faktor dan seterusnya melihat kesan gabungan faktor-faktor tersebut. Proses pertama melibatkan pengelompokkan parameter yang berkorelasi kuat ke dalam faktor tersendiri dan mengeluarkan parameter yang mempunyai lebih daripada satu faktor. Analisis pengkelasan agglomeratif hierarki (HACA) dan analisis diskriminan (DA) juga dilakukan untuk memperlihatkan kelompokan dan pengaruh faktor terhadap kualiti air tasik. Hasil analisis menunjukkan kualiti air Tasik Chini dipengaruhi oleh lebih daripada satu faktor. Hasil kajian menunjukkan komponen biologi dan kimia (nutrien) mempunyai pengaruh kuat dalam penentuan kualiti air tasik. Parameter berasaskan biologi iaitu BOD5, COD, klorofil a dan kimia (nitrat dan ortofosfat) adalah parameter yang penting di Tasik Chini. Ketiga-tiga analisis yang dijalankan menunjukkan kepentingan penentuan komponen biologi dan kimia bagi menentukan kualiti air Tasik Chini.

 

Kata kunci: Ekosistem air tawar; kualiti air; limnologi; multivariat; Tasik Chini

 

ABSTRACT

An analysis was undertaken using the multivariate approach to determine the important water quality for shallow lake water quality assessment. Fourteen water quality parameters which includes biological, physical and chemical components were collected monthly over twelve month period. The data were analysed using factor analysis which involves identification of factor correlation, factor extraction and factor permutations. The first process involved the clustering of high correlation parameters into its respective factor and the removal of parameters that have more than one factor. Agglomerative hierarchy (HACA) and discriminant analysis (DA) were also used to exhibit the important factors that has significant influence on lake water quality. The analysis showed that Lake Chini water quality was determined by more than one factor. The results indicated that the biological and chemical (nutrients) components have significant influence in determining the lake water quality. The biological parameters namely BOD5, COD, chlorophill a and chemical (nitrate and orthophosphate) are important parameters in Lake Chini. All analysis demonstrated the importance of biological and chemical water quality components in the determination of Lake Chini water quality.

 

Keywords: Freshwater ecosystem; Lake Chini; limnology; water quality

RUJUKAN

Adams, M.J. 1998. The principles of multivariate data analysis. In Analytical Methods of Food Authentication, edited by Ashurst, P.R. & Dennis, M.J. London, UK.: Blackie Academic & Professional. p. 350.

Ahmad Abas Kutty, Ahmad Ismail & Chay Siew Fong. 2001. A preliminary study of phytoplankton at Lake Chini, Pahang. Pakistan Journal of Biological Sciences 4(3): 309-313.

Allen, H.E. & Kramer, J.R. 1972. Nutrients in Natural Waters. Ontario, Canada: John Wiley & Sons.

APHA 1992. Standard Methods for the Examination of Water and Wastewater. 18th ed. Washington DC: American Public Health Association.

Bengraine, K. & Marhaba, T.F. 2003. Using principle component analysis to monitor reruang and masa changes in water quality. Journal of Hazardous Materials 100(1-3): 179-195.

Forina, M., Armanino, C. & Raggio, V. 2002. Clustering with dendrograms on interpretation variables. Analytica Chimica Acta454: 13-19.

Gasim, M.B., Hj.Toriman, M.E., Kutty, A.A., Islam, M.S. & Tan, C.C. 2008. Water quality of several feeder rivers between two seasons in Tasik Chini, Pahang. Sains Malaysiana37(4): 313-321.

Golterman, H.L. 1975. Physiological Limnology. Amsterdam: Elsevier.

HACH2003. The Handbook of DR/2500 Laboratory Spectrophotometer. Loveland, CO:HACHCompany.

Jabatan Alam Sekitar (JAS). 2006. Malaysia Environmental Quality Report. Kuala Lumpur. Kementerian Sumber Asli dan Alam Sekitar Malaysia.

Johnson, R.A. & Wichern, D.W. 1992. Applied Multivariate Statistical Analysis. 3rd ed. Englewood Cliffs, New Jersey: PrenticeHall.

Juahir, H., Zain, S.M., Rashid Atta Khan, Mohd Kamil Yusoff, Mazlin Mokhtar & Mohd Ekhwan Toriman. 2009. Using chemometrics in assessing Langat River water quality and designing a cost effective water sampling strategy. Maejo International Journal of Science and Technology 3(01): 26-42.

Juahir, H., Zain, S.M., Ahmad Zaharin Aris, Mohd Kamil Yusoff & Mazlin Mokhtar. 2010. Spatial assessment of Langat River water quality using Chemometrics. J. Environ. Monit. 12: 287-295.

Juahir, H., Zain, S.M., Mohd Kamil Yusoff, Tengku Hanidza, T.I., Mohd Armi, A.S., Mohd Ekhwan Toriman & Mazlin Mokhtar 2011. Spatial water quality assessment of Langat River Basin (Malaysia) using environmetric techniques. Environmental Monitoring Assessment 173: 625-641.

Loganathan, M.T., Hua S.C. & Ramakrishna, S. 1999. Effects of Kuala Sg. Chini gateway (KSGC) to the wetland ecology of Tasek Chini Pahang: A case study. Proceeding of Water: Forestry and Landuse Perspective. Forest Research Institute of Malaysia (FRIM), Kepong, Malaysia, 31st March-1st April.

Massart, D.L. & Kaufman, L. 1983. The Interpretation of Analytical Chemical Data by the Use of Cluster Analysis. New York, United States: Wiley.

McKenna, J.E. 2003. An enhanced cluster analysis program with bootstrap significance testing for ecological community analysis. Environmental Modelling & Software 18: 205-220.

Mohammad Shuhaimi-Othman, E.C. Lim & I. Mushrifah. 2007. Water quality changes in Chini Lake, Pahang, West Malaysia. Environ. Monit. Assess. 131: 279-292.

Muhammad Barzani Gazim, Mohd Ekhwan Toriman, Sahibin Abd Rahim, Mir Sujaul Islam, Tan Choon Chek & Hafizan Juahir. 2004. Hydrology and water quality and land-use assessment of Tasik Chini’s feeder rivers, Pahang, Malaysia. Geografia 3(3): 1-16.

Otto, M. 1998. Multivariate methods. In Analytical Chemistry, edited by Kellner, R., Mermet, J.M., Otto, M. & Widmer, H.M. Weinheim, Germany: Wiley-VCH. p. 916.

Shrestha, S. & Kazama, F. 2007. Assessment of surface water quality using multivariate statistical techniques: A case study of the Fuji river basin, Japan. Environmental Modelling & Software 22(4): 464-475.

Singh, K.P., Malik, A., Mohan, D. & Sinha, S. 2004. Multivariate statistical techniques for the evaluation of spatial and temporal variations in water quality of Gomti River (India) - A case study. Water Research 38: 3980-3992.

Singh, K.P., Malik, A., Singh, V.K., Mohan, D. & Sinha, S. 2005. Chemometric analysis of groundwater quality data of alluvial aquifer of Gangetic Plain, North India. Analytica Chimica Acta550: 82-91.

Sujaul, I.M., Ismail, B.S., Muhammad Barzani, G., Mohd Ekhwan, T. & Sahibin, A.R. 2010. Assessment of land use and land cover changes in the Tasik Chini Catchment area, Pahang, Malaysia using the GIS. Advances in Environmental Biology 4(3): 404-413.

UNDP 1999. Chini Lake-The ecosystem and biodiversity, Kuala Lumpur: Malaysia Wetland International: United Nation Development Programme.

Wetzel, R.G. 1983. Limnology. Philadelphia: Sauders College Publishing.

Willett, P. 1987. Similarity and Clustering in Chemical Information Systems. Letchworth: Research Studies Press.

Zati Sharip, Schooler, S.S., Hipsey, M.R. & Hobbs, R.J. 2011. Eutrophication, agriculture and water level control shift aquatic plant communities from floating-leaved to submerged macrophytes in Lake Chini, Malaysia. Biol. Invasions. DOI10.1007/s10530-011-0137-1.

 

 

*Pengarang untuk surat-menyurat; email: abas@ukm.my

 

 

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