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"ABSTRAKPeatland fires encourage the government to restore peat function as natural water storage. One of the measures taken is to build a circumference dike to hold water to reduce excessive drainage. However, there is no study yet of the planned average water level that has to be maintained from the construction of circumference dike. Therefore, the aim of this study is to calculate the average water level on peatlands inside the circumference dike. The methods used consist of hydrological analysis, spatial analysis, and water level analysis. The results of the analysis shows that the average water level in normal years tends to be above the surface, except in the second half of August to the first half of November. In the second half of September to the second half of October, the peat has the potential to be burned. In a dry season the water tends to fall decline to the drainage boundary of peatland which is at -1.5 m which occurs in the second half of March to December. In the second half of February until December peatland has potential to be burned. From this research, it can be concluded that the calculations using this method is similar with in-situ observation data and can be used to calculate the average water level of peat with the same conditions in other locations."

"ABSTRAKPembukaan lahan gambut yang didahului dengan pembuatan saluran‐saluran (drainase) akan menyebabkan turunnya muka air tanah, hal ini akan memacu laju dekomposisi bahan organik dan pada akhirnya gambut menjadi rentan terbakar dan teremisi. Oleh karena itu pengetahuan laju emisi carbon sangat penting untuk perencanaan sistem drainase, dalam rangka memelihara kelestarian gambut. Metode ilmiah yang digunakan meliputi: perhitungan sebaran ketebalan/kedalaman gambut, volume gambut kering, volume gambut teroksidasi, berat C gambut kering dan CO2 equivalent. Laju emisi karbon (C) dihitung berdasarkan emisi karbon (C) dan waktu subsiden. Selanjutnya laju emisi C (Mton CO2/tahun) dihitung berdasarkan 4 (empat) buah konsep pemodelan/skenario, yaitu: kondisi aktual/eksisting, perkebunan, bendung (canal blocking), bendung (canal blocking) dan dengan penghutanan kembali. Kegiatan ini dilakukan di Sei Ahas, Kapuas, Kalimantan Tengah dan Sungai Buluh, Tanjung Jabung Timur, Jambi. Berdasarkan hasil penelitian didapatkan bahwa perubahan tata guna lahan akan sangat berpengaruh terhadap perubahan elevasi muka air tanah gambut yang turut serta memacu peningkatan emisi C ke atmosfer."