PENGEMBANGAN PARAMETER FRAKSI KARBON YANG HILANG AKIBAT SUBSIDENSI LAHAN GAMBUT

Kurnain, Ahmad (2014) PENGEMBANGAN PARAMETER FRAKSI KARBON YANG HILANG AKIBAT SUBSIDENSI LAHAN GAMBUT. Mitigasi dan Adaptasi Perubahan Iklim Menuju Tata Kelola Hutan dan Lahan Lestari . pp. 359-365. ISSN 978-602-73376-0-2

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Abstract

Losses of peat mass as a result of peat oxidation is often related to peatland subsidence that subsequently used in practices to estimate green house gas emission. This logics will result in an overestimate of C loss as the peat subsidence is not only due to the loss of peat, but also due to compaction and dewatering of peat. Verification of C loss as peatland subsidence requires a fraction parameter of peatland subsidence due to peat compaction. The study emphasized on analysis of peat hydro-physics data collected on various types of peatland uses to estimate a fraction of peatland subsidence due to peat compaction and dewatering. The peat subsidence could be described proximately through peat compaction as a function of moisture content. At spesific moisture content of > 2 dm3 kg-1, the subsidence due to peat compaction dan dewatering proportionally could be described with a modified equation of Groenevelt and Grant (2004). Fraction of peat compaction due to dewatering contributed 85 – 95%, and this condition is approximately related with groundwater depth of 20 – 40 cm. When the groundwater depth drops down more that 40 cm, its fraction decreases to 20 – 50%. Subsequently a fraction of C loss could be estimated.

Item Type: Article
Uncontrolled Keywords: carbon loss, peatland, subsidence
Subjects: S Agriculture > S Agriculture (General)
Depositing User: Mr Arief Mirathan - Eka Setya Wijaya
Date Deposited: 01 Aug 2017 08:18
Last Modified: 01 Aug 2017 08:18
URI: http://eprints.unlam.ac.id/id/eprint/2033

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