Urban Development And Changing Patierns Of Night Time Temperatures In The Kuala Lumpur- Petaling Jaya Area Malaysia

Authors

  • Sham Sani

DOI:

https://doi.org/10.11113/jt.v5.937

Abstract

Makalah ini Ielah cuba menonjolkan beberapa ciri penting dalam perkembangan pembandaran di Kuala Lumpur- Petaling Jaya sejak tahun 1970an dan memeriksa cara bagaimana perkembangan ini telah mempengaruhi pola suhu pada waktu malam. Perbandingan po/a suhu bagi tahun-tahun 1972, 1975 dan 1980 menunjukkan bahawa intensiti pulau haba telah bertambah disertai oleh pertambahan kawasan yang mempunyai suhu tinggi. Perbezaan suhu di antara pusat bandar dan kawasan Kebun Bunga telah menjadi berkurangan dan tidak sebegitu ketara seperti yang terdapat pada tahun 1972. Perubahan-perubahan ini adalah disebabkan oleh bertambahnya bilangan kenderaan berinjin di jalan-jalan raya di samping pertambahan kawasan perumahan dan jalan-jalan raya itu sendiri. Selain daripada mempengaruhi suhu dan keselesaan,permukaan-permukaan yang tidak telap air ini juga mempengaruhi haidrologi kawasan bandar. Larian air dari kawasan bandar adalah lebih tinggi daripada kawasan luar-bandar. Makalah ini seterusnya mencadangkan supaya selari dengan rancangan-rancangan perumahan dan jalanraya, rancangan-rancangan menanam pokok juga perlu dijalankan kerana ini akan mengurangkan larian air dan seterusnya kejadian banjir kilat di bandar. The paper has attempted to highlight some salient features in the growth and development of urbanization in the Kuala Lumpur- Petaling Jaya since the early 1970s and examine the way in which such growth has affected night-time temperature patterns. Comparison of temperatures during 1972,1975 and 1980 indicates that the intensity of the heat island had increased quite considerably followed by an increasingly larger areas having higher temperatures. The steep temperature gradient between the central city and the Lake Garden which was observed in 1972 had by 1980 disappeared. Such changes were attributed to the increased number of motor vehicles on the roads, the opening up of the many new housing estates and road building itself. Apart from affecting temperatures, paved surfaces also affect the hydrology of the area. Studies have shown that increased runoff from urban areas can be quite considerable. It is suggested that along with road construction and housing development programmes those of tree planting must also follow suit immediately. Such programmes will have the effect of decreasing runoff and hence flash floods.

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Published

1984-04-05

Issue

Section

Science and Engineering

How to Cite

Urban Development And Changing Patierns Of Night Time Temperatures In The Kuala Lumpur- Petaling Jaya Area Malaysia. (1984). Jurnal Teknologi (Sciences & Engineering), 5(1), 27-35. https://doi.org/10.11113/jt.v5.937