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Impact of Land-Use Change on Soil Carbon Dynamics in Tropical Peatland, West Kalimantan- Indonesia Nusantara, Rossie Wiedya; Sudarmadji, Sudarmadji; Djohan, Tjut S.; Haryono, Eko
Indonesian Journal of Geography Vol 52, No 1 (2020): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.551 KB) | DOI: 10.22146/ijg.48451

Abstract

The conversion of tropical peat forest to other land uses can reduce organic carbon (C) and stable C isotope (δ13C) of peat soil. This research aimed at analyzing the soil organic-C and δ13C of peatland with respect to maturity (fibric, hemic and sapric) in five types of peatland use, which included primary peat forest, secondary peat forest, shrubs, oil palm plantations, and cornfield in West Kalimantan. Analysis of peat soil samples includes organic C with Loss in ignition method and δ13C  using an isotope ratio mass spectrometry(IRMS) method. Organic-C at fibric was higher than hemic and sapric, respectively (57.2%, 57.0%, 56.4%), meanwhile, organic-C was the highest on primary peat forest, followed by on secondary peat forest, oil palm plantation, cornfield, and shrubs, respectively 57.1%, 57.0%, 56.4%, 56.0%. The cause of increasing and decreasing organic C and δ13C due to land-use change due to changes in vegetation, burning during tillage, and age of organic matter of peat soil. This condition causes the opening of natural peat ecosystems and changes in anaerobic to aerobic conditions. 
KARAKTERISTIK FISIK LAHAN AKIBAT ALIH FUNGSI LAHAN HUTAN RAWA GAMBUT Nusantara, Rossie Wiedya; Sudarmadji, Sudarmadji; Djohan, Tjut S.; Haryono, Eko
Perkebunan dan Lahan Tropika Vol 2, No 2 (2012): PERKEBUNAN DAN LAHAN TROPIKA
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.533 KB) | DOI: 10.26418/plt.v2i2.3732

Abstract

Tujuan penelitian ini adalah mengamati karakteristik serasah dan biomasa tanaman pada lima tipe lahan (hutan rawa gambut primer-HP, hutan gambut sekunder-HS, semak belukar-SB, kebun sawit-KS, kebun jagung-KJ), seperti berat basah, berat kering, kadar air, kadar abu, C-organik dan kandungan C, sebagai dampak perubahan penggunaan lahan. Penelitian ini dilakukan pada lahan gambut di Rasau Jaya-Propinsi Kalimantan Barat. Hasil penelitian ini menunjukkan bahwa berat basah, berat kering, kadar air, kadar abu dan C-organik biomasa pada KJ lebih tinggi daripada KS, SB, HS dan HP. Sedangkan serasah HP mempunyai kandungan C lebih tinggi daripada KS, HS, SB dan KJ. Kata kunci : biomasa tanaman, lahan gambut, perubahan penggunaan lahan, serasah