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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan Microbiology Indonesia Journal of Tropical Soils Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) SAINS TANAH - Journal of Soil Science and Agroclimatology Caraka Tani: Journal of Sustainable Agriculture Dinamika Pertanian Berita Biologi
Basuki Sumawinata
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian, Institut Pertanian Bogor, Kampus IPB Dramaga, Bogor, 16680, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Medicine & Pharmacology

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Seasonal litter contribution to total peat respiration from drained tropical peat under mature oil palm plantation Pulunggono, Heru Bagus; Siswanto, Siswanto; Mubarok, Husni; Widiastuti, Happy; Tambusai, Nizam; Zulfajrin, Moh; Anwar, Syaiful; Taniwiryono, Darmono; Sumawinata, Basuki; Sabiham, Supiandi
Journal of Degraded and Mining Lands Management Vol. 9 No. 2 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.092.3247

Abstract

The amount of CO2 gas emissions in drained peatland for oil palm cultivation has been widely reported. However, the research addressing the contribution of litter respiration to peat and total respiration and its relationship with several environmental factors is found rare. The aim of this study was to measure peat and heterogeneous litter respiration of drained tropical peat in one year at a distance of 2.25 m and 4.50 m from mature oil palm trees of 14 years using the chamber method (Licor Li-830). In addition to CO2 efflux, we measured other environmental parameters, including peat temperature (10 cm depth), air temperature, groundwater table (GWL), and rainfall. Results showed that the mean total peat respiration (Rt) was 12.06 g CO2 m-2day-1, which consisted of 68% (8.24 g CO2 m-2day-1) peat (Rp) and root (Rr) respiration and 32% (3.84 g CO2  m-2day-1) of litter respiration (Rl) at the distance of 2.25 m from the palm tree. Meanwhile, at a farther distance, the Rt was 12.49 g CO2m-2day-1, the contribution of Rp was 56% (6.78 g CO2 m-2day-1), and Rl was higher than the closest distance (46%; 5.71 g CO2 m-2day-1). Thus, one-year observation resulting the mean Rt and Rr was 0.07–0.08 Mg CO2 ha-1 day-1, while Rl was 0.04–0.06 Mg CO2 ha-1 day-1. The means of Rt, Rp, and Rl were significantly different in the dry season than those recorded in the rainy season. The climatic-related variable such as peat and air temperature were chiefly governing respiration in peat under mature oil palm plantation, whereas the importance of other variables present at particular conditions. This paper provides valuable information concerning respiration in peat, especially for litter contribution and its relationship with environmental factors in peatland, contributing to global CO2 emission. 
Kelarutan Nikel Pada Campuran Tanah Berbahan Induk Ultrabasa dengan Gambut pada Kondisi Jenuh dan Tidak Jenuh Air David Ricardo Simbolon; Basuki Sumawinata; Gunawan Djajakirana
Jurnal Ilmu Tanah dan Lingkungan Vol 25 No 1 (2023): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.25.1.25-29

Abstract

Gambut tropik dengan bobot isi yang rendah berdampak pada berkurangnya kemampuan tanah gambut dalam menopang tanaman. Untuk meningkatkan bobot isi gambut maka dilakukan pencampuran tanah mineral dengan tanah gambut. Namun sumber tanah mineral yang dekat ke lahan gambut adalah tanah berbahan induk ultrabasa dengan kandungan logam Nikel (Ni) yang tinggi mencapai 5000 ppm. Karakter lahan gambut yang asam dan berada pada topografi yang rendah menjadi dugaan akan meningkatkan kelarutan Ni saat terjadi banjir. Oleh karena itu pencampuran bahan-bahan tanah dan perlakuan air bertujuan untuk mengukur kelarutan Ni pada kesetimbangan pH setelah pencampuran dan diekstrak menggunakan larutan NH4OAc 1.0 N pH 7.0; 4.8; 4.2, HCl 1.0 N; 0.1 N, dan H2SO4 1.0 N. Kesetimbangan pH setelah pencampuran bahan tanah berada pada pH 5.2 – 6.1 yang berarti kelarutan Ni ditunjukan oleh hasil ekstrak larutan NH4OAc 1.0 N pH 7.0 - 4.8. Pada rentang kesetimbangan pH tersebut nilai kelarutan Ni pada perlakuan penjenuhan (J) dan pengeringan (K) tidak berbeda nyata pada uji taraf 5%. Namun kelarutan Ni pada setiap penambahan bobot gambut berbeda nyata pada kondisi penjenuhan yang dikeringkan sampai kondisi lembab (JK).
Co-Authors Al Viandari, Nourma Atang Sutandi Bambang Hero Saharjo Budi Nugroho Darmawan Darmawan Darmono Taniwiryono Darmono Taniwiryono Darmono Taniwiryono David Ricardo Simbolon Dwi Putro Tejo Baskoro Eka Rahmi Eliartati Eliartati Gunawan Djajakirana Happy Widiastuti HAPPY WIDIASTUTI Heru B. Pulunggono Heru Bagus Pulunggono Husni Mubarak Husni Mubarok Husni Mubarok Husni Mubarok Iskandar Iskandar Jon Hendri Komarsa Ganda Sasmita M. Joehari Jamili Moh Zulfajrin Nizam Tambusai Onrizal Onrizal Permatasari, Galuh Pulunggono, Heru S Siswanto Saeful Anwar Siswanto Siswanto Siswanto Sry Nurmala Suwardi Suwardi Syaiful Anwar Tambusai, Nizam Tsuyoshi Kato Zulfajrin, Moh