VARIASI TINGKAT KEBISINGAN PADA HUTAN KOTA DI KOMPLEKS DPR/ MPR DAN MANGGALA WANABAKTI, JAKARTA

• Main Authors: , HALE AZARYA WISTANTAMA, , Ni Putu Diana Mahayani, S.Hut., M.For.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2014
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/127063/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=67306
• Institution: Universitas Gadjah Mada

A high population in Jakarta has been related with the increase number of vehicles which in 2012 it reached 94,2 million units. This has been causing traffic congestion and increase of the noise level. On the street of Jendral Gatot Subroto, two types of urban forest that are expected to reduce the noise, firstly the random distribution of trees in Manggala Wanabakti area and secondly the clumped distribution of trees in DPR/ MPR area. Those type of urban forest are assumed to result in different extent of noise reduction. This study aimed to identify the variation of noise in those urban forests. The measurement, calculation, and evaluation of the noise level has been conducted according to Decree of Ministry of Environment Number: KEP48/ MENLH/11/1996. The noise level was measured at four distance points: 0 m, 30 m, 60 m, and 90 m from the noise source and was repeated three times in each urban forest. The other parameters measured were tree density, tree height, denses of urban forest, air temperature, air humidity, and wind speed. The result showed that noise level in both urban forest types vary. The range of noise level in Manggala Wanabakti urban forest was 74,18 ± 5,6 dB and DPR/ MPR urban forest was 71,94 ± 7,1 dB. The noise level in both forest was above 65 dB, which is above the allowed noise level for business area. The reggresion analysis showed that the parameters of vegetation density, tree height, wind speed, and the reduction of noise according to the distances from the noise source were the function of noise level in Manggala Wanabakti. The higher vegetation density and wind speed resulted in lower noise level. The lower tree height and the closer from the noise source resulted in higher noise level. The noise level in DPR/ MPR urban forest was influenced by tree density parameter. The higher tree density makes the higher noise level.