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Sains Malaysiana 47(11)(2018): 2851–2861 http://dx.doi.org/10.17576/jsm-2018-4711-28
The Relation of Neighbouring Land
Use Type and Sedimentary Characteristics of Fluvial Sediments
in Tropical Rivers (Kaitan Penggunaan Jenis Tanah Jiran dan
Pencirian Sedimen untuk Sedimen Fluvium di Sungai Tropika) WAN HANNA
MELINI
WAN
MOHTAR1*,
SITI
AMINAH
BASSA
NAWANG1,
MOHD
SHAFIQUE
NOOR
RAHMAN1,
WAN
ZAWIAH
WAN
ZIN2
& KHAIRUL NIZAM ABDUL
MAULUD1,3 1Department of Civil
& Structural Engineering, Faculty of Engineering & Built
Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi,
Selangor Darul Ehsan, Malaysia 2School of Mathematical
Sciences, Faculty of Science and Technology, Universiti Kebangsaan
Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia 3Earth Observation
Center, Institute of Climate Change, Universiti Kebangsaan Malaysia,
43600 UKM Bangi, Selangor Darul Ehsan, Malaysia Received: 8 March 2018/Accepted:
11 July 2018 ABSTRACT This study investigates the
relationship between land use types and sedimentary characteristics
of fluvial bed at three rivers in Selangor, Malaysia; namely Sungai
Tengi, Selangor and Langat. The diversity in population density
and land development at the adjacent river banks gives associated
dominant land use type as forest, agriculture and urban for Tengi,
Selangor and Langat, respectively. Field sampling was conducted
at consistent spatial locations for Tengi and Selangor, whereas
for Langat, the bed sediment was taken at non-uniform spatial
points due to limited access. Statistical analysis of the sediment
bed mixture shows that forest dominated land gives finer bed sediment
size at < 200 μm. Agriculture-type of land use increases
the mean sediment size to medium sand, whereas bed material near
to urbanized areas has coarser sediment size with > 650 μm.
Correlation analysis proved that there is a relationship between
types of land use with the mean sediment size. No distinctive
correlation can be observed for sorting, skewness and kurtosis
of the sediment with the types of land use. Keywords: Correlation analysis;
land use type; sedimentary characteristics; tropical rivers ABSTRAK Kajian ini melihat kepada hubungan
antara guna tanah dan ciri sedimentari sedimen dasar sungai daripada
tiga sungai di Selangor, Malaysia iaitu Sungai Tengi, Selangor
dan Langat. Ketiga-tiga sungai ini mempunyai kepadatan penduduk
dan jenis guna tanah yang berbeza dengan Tengi, Selangor dan Langat
masing-masing didominasi oleh hutan, pertanian dan perbandaran.
Pengumpulan sampel di tapak dilakukan pada lokasi jarak reruang
yang tekal untuk Tengi dan Selangor manakala untuk Langat, sampel
dasar diambil pada titik persampelan reruang yang tidak seragam
disebabkan akses yang terhad. Analisis statistik bagi campuran
sedimen menunjukkan kawasan didominasi guna tanah jenis hutan
memberikan sedimen dasar bersaiz < 200 μm. Jenis guna
tanah pertanian meningkatkan saiz purata sedimen kepada julat
jenis pasir sederhana, manakala sedimen kasar dengan saiz >
650 μm dijumpai di dasar sungai dengan kawasan tebing adalah
jenis perbandaran. Analisis korelasi membuktikan terdapat hubungan
antara jenis guna tanah dan saiz purata sedimen. Tiada korelasi
ketara dijumpai bagi pengisihan, kepencungan dan kurtosis bagi
campuran sedimen diambil dengan jenis guna tanah. Kata kunci: Analisis korelasi; ciri sedimen; jenis guna tanah; sungai
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