Gunandar, Arifa
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Analisis Neraca Air Lahan Gambut Pada Sub Khg 3 Pulau Rangsang Provinsi Riau Dengan Metode Thornthwaite Mather Untuk Memperkirakan Debit Limpasan Permukaan Gunandar, Arifa; Sutikno, Sigit; Hendri, Andy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Rangsang Island is described as a peat island located on the east coast of Riau Province. Due to the high conversion of peatlands, the peat of Rangsang Island is degraded and continuously emits emissions. Efforts to restore degraded peatlands are implementing good water management. In assessing the condition of the peatland water system, this study will analyze the water balance in the Peat Hydrological Unit (PHU) of Rangsang Island to determine the condition and quantity of water contained in the peatland. The model used in peatland water balance modeling is the Thornthwaite & Mather Water Balance (TMWB model). The analysis and discussion will examine the condition of the peatland water balance in the Rangsang Island PHU which is calculated using the land water balance method. From the results of this study, the condition of the water balance of the peatlands in Sub PHU 3, Rangsang Island, is dominantly experiencing deficit months. The deficit months occurred in January, February, March, May, July, August, October and December. The total water deficit is -104.20 M3. While the wet months occur in April, June, September and November. The total surplus of water is 26.15 million m3. The total water deficit for a year when compared to the total surplus of water for a year there is still a big enough difference so that a good and sustainable water-compliant system is needed on peatland Sub PHU 3 Rangsang Island, especially in the Rangsang Island KHG in general in the future.Keywords: Deficit, Peat Hydrological Unit, Peat land, Surplus, Thornthwaite & Mather Water Balance