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Rinto Manurung
Soil Science Department, Universitas Tanjungpura
Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Mechanical Engineering Social Sciences Other

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Journal : Jurnal Ilmu Lingkungan

 1 
Kajian Kualitas Tanah pada Lahan Gambut Terbakar di Kota Pontianak Provinsi Kalimantan Barat Rinto Manurung; Rossie Wiedya Nusantara; Ismahan Umran; W. Warganda
Jurnal Ilmu Lingkungan Vol 19, No 3 (2021): November 2021
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.19.3.517-524

Abstract

Kebakaran lahan gambut menyebabkan terjadinya perubahan sifat fisika, kimia dan biologi tanah gambut sehingga secara otomatis mempengaruhi kualitas tanah yang dinyatakan dengan Indeks Kualitas Tanah (IKT). Tujuan penelitian ini adalah menentukan indeks kualitas tanah dan faktor penentunya pada lahan gambut terbakar (GT) dan tidak terbakar (GTT). Penelitian dilakukan di Kelurahan Bansir Darat Kecamatan Pontianak Tenggara Kota Pontianak pada GTT  dan GT. Tahapan penelitian meliputi pengambilan sampel tanah pada masing-masing lahan, pengamatan dan pengukuran kedalaman gambut, ketebalan lapisan gambut dan kematangan gambut serta perhitungan jumlah cacing. Analisis sifat fisika tanah meliputi bobot isi, kadar air kapasitas lapang, porositas total; sifat kimia tanah terdiri dari reaksi tanah (pH), karbon organik (C-organik), Nitrogen total (N-total), rasio CN, posfor tersedia (P-tersedia), natrium, kalium, kalsium dan magnesium dapat dipertukarkan (Na-dd, K-dd, Ca-dd dan Mg-dd), kapasitas tukar kation (KTK), kejenuhan basa (KB), kadar abu; dan jumlah cacing tanah untuk sifat biologi tanah. Hasil penelitian menunjukkan GT dengan kematangan saprik memiliki kedalaman gambut lebih dangkal dibandingkan GTT dengan kematangan hemik. Kadar air dan porositas pada GT juga lebih rendah dibandingkan GTT. Kation basa GT lebih tinggi dibandingkan GTT meskipun kriteria keduanya sangat rendah. Parameter penentu kualitas tanah yaitu C-organik, CN rasio, N-total, P-tersedia, kalsium, natrium, kalium, kejenuhan basa, bobot isi, kadar air dan porositas. Kedua lahan memiliki kriteria IKT rendah namun GT memiliki nilai yang lebih tinggi (0,34) daripada GTT (0,27). Meskipun nilai IKT pada GT lebih tinggi, banyak dampak negatif yang ditimbulkan dari pembakaran lahan gambut. Karena itu pemerintah melarang pembakaran lahan dengan mengeluarkan kebijakan-kebijakan tentang pelarangan pembakaran hutan dan lahan gambut.AbstractPeatland fires cause changes in the physical, chemical and biological characteristics of the peat soil. It automatically affects the quality of the soil as stated by the Soil Quality Index (IKT). The purpose of this study was to determine the soil quality index and its determinants in burnt (GT) and unburnt (GTT) peatlands. The research was conducted in Bansir Darat Village, Southeast Pontianak District, Pontianak City on GT and GTT. The research stages included taking soil samples from each land, observing and measuring the depth of the peat, the thickness of the peat layer, the maturity of the peat and counting the number of worms as well. Analysis of soil physical characteristics including bulk density, moisture content of field capacity, total porosity; soil chemistry consists of C-organic, total nitrogen (N-total), CN ratio, available phosphorus (P-available), exchangeable sodium (Na-dd), potassium (K-dd), calcium-dd (Ca-dd)dan magnesium (Mg-dd), cation exchange capacity (CEC), base saturation (KB), content of ash; and the number of earth worms for soil biology property. The results showed that the physical characteristics of peat on GT had a shallower peat depth with sapric compared to GTT with hemic. The water content and porosity on GT are lower than GTT as well. The base cation of GT is higher than GTT even though the criteria for both are very low. The determinants of soil quality were C-organic, CN ratio, N-total, P-available, calcium, sodium, potassium, base saturation, content weight, moisture content and porosity. The Soil Quality Index of both lands have low criteria but GT has a higher value (0.34) than GTT (0.27). Even though the IKT value in GT is higher, there are many negative impacts caused by burning peatlands. Therefore, the government forbids burning of land by issuing policies to prohibit the burning of forests and peatlands.
Pengaruh Emisi Kendaraan Terhadap Kandungan Logam Timbal (Pb) Tanah dan Bulir Padi pada Lahan Sawah di Kecamatan Tebas Kabupaten Sambas Rinto Manurung; Shenny Oktoriana; Anita Suharyani
Jurnal Ilmu Lingkungan Vol 21, No 1 (2023): January 2023
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.21.1.1-7

Abstract

Lead (Pb) is one of most toxic pollutants. The main sources of Pb comes from industrial and vehicle gases. Lead contained in gas from vehicle will be absorbed and accumulated in the soil. Leads in the soil, especially in paddy soil alongside highway with many vehicles have a potential to be absorbed and accumulated in the grain. Solubility of Pb in the soil affecting the absorption of paddy is controlled by soil properties such as texture, organic matter, pH and cation exchange capacity. The research aims to study the effect of vehicle emission on Pb content in the soil, soil properties that influences the presences of Pb in the soil and its accumulation in grain. The research was conducted in paddy soil located alongside the highway of Sambas Regency as a rice producing center in West Kalimantan. Distance of soil and grain samplaing from the road will be used as a treatment to observe the effect of vehicle emission on Pb content, ie 0 – 50 meters, 50 – 100 meters and more than 100 meters. Soil samples were taken at 0-20 cm and 20-50 cm depth. Soil samples and grains are destracted by using nitric acid, hydrogen peroxide and perchloric acid. Furthermore, Pb content was measured using Atomic Absorbtion Spectrophotometry (AAS). The results showed that there is no effect of land distance from the road to the soil content.  The average Pb content at 0-50 m, 50-100 m and more than 100 m at a depth of 0-20 cm were 29,62 ppm, 31,57 ppm and 35,03 ppm, respectively. While the average Pb content at a depth of 20-50 cm, respectively, were 27,16 ppm, 32,53 ppm and 35,97 ppm. The presence of Pb in the soil is significantly correlated with sand and clay fraction. The content of Pb on grains is above the tolerance limit (0,5 ppm) of Pb content in food, fruits and vegetables. Pb content is from 2,07 ppm to 5,10 ppm.
Dampak Sekat Kanal Terhadap Fluktuasi Muka Air Tanah Pada Lahan Gambut di Kabupaten Kubu Raya – Provinsi Kalimantan Barat Rossie Wiedya Nusantara; Rinto Manurung; Ismahan Umran; Stella Padagi; Umi Lestari
Jurnal Ilmu Lingkungan Vol 21, No 2 (2023): April 2023
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.21.2.393-402

Abstract

Dalam pengelolaan lahan gambut, muka air tanah harus menjadi perhatian utama, baik dalam kondisi alami maupun terdegradasi. Upaya pemulihan lahan gambut terdegradasi yaitu melakukan pembasahan kembali dengan pembangunan sekat kanal. Pembasahan kembali lahan gambut terdegradasi diharapkan dapat mempertahankan muka air tanah pada lahan gambut. Penelitian ini bertujuan untuk mengkaji fluktuasi kedalaman muka air pada lahan gambut dengan sekat kanal yang dibangun pada tahun 2019 dan 2020 (SK19 dan SK20), tanpa sekat kanal (TSK) dan hutan sekunder (HS) di Desa Kubu Padi Kecamatan Kuala Mandor B, Kabupaten Kubu Raya. Metode pengambilan sampel menggunakan metode boring dan pengukuran lapangan untuk pengamatan kedalaman muka air tanah menggunakan piezometer. Penentuan titik pengamatan 4 lokasi penelitian yaitu SK19, SK20, TSK, dan HS berjumlah 24 titik (4 lokasi x 6 ulangan). Parameter yang diamati pada penelitian ini yaitu kedalaman muka air tanah, kedalaman muka air saluran, bobot isi, kadar air tanah dan porositas total. Hasil penelitian menunjukkan bahwa kedalaman muka air tanah paling dangkal yaitu 12,19 cm terdapat di SK20 dan kedalaman muka air tanah paling dalam yaitu 52,61 cm terdapat di TSK, sedangkan di SK19 kedalaman muka air tanahnya yaitu 30,38 cm dan di HS kedalaman muka air tanahnya 31,61 cm. Kedalaman gambut di lokasi penelitian tergolong sangat dalam yaitu >300 cm. Rata – rata kedalaman muka air saluran di SK19 yaitu 24,33 cm, di SK20 yaitu 6,17 cm dan di TSK yaitu 47,49 cm. Bobot isi TSK (0,12 g/cm3) lebih tinggi dari SK19 (0,11 g/cm3), SK20 (0,11 g/cm3), dan HS (0,10 g/cm3). Porositas total HS (93,45%) lebih tinggi dari SK19 (91,07%), TSK (92,06%) dan SK20 (92,63%). Kadar air tanah tertinggi pada SK20 yaitu 744, 43% dan terendah yaitu 532,95% di TSK, sedangkan kadar air di SK19 dan HS yaitu 646,08% dan 622,14%.
Co-Authors Andri andri Anita Suharyani Febrisi Dwita Indah Dwi Khomariah Ismahan Umran Ismahan Umran Josua Parulian Hutajulu Hutajulu Leony Agustine Marisi Aritonang Meliana Pasaribu R. Arif Malik Ramadhan Rini Hazriani Rini Hazriani Rossie Wiedya Nusantara Rossie Wiedya Nusantara Shenny Oktoriana Stella Padagi Umi Lestari Urai Suci Y. V. Indrawati Urai Suci Yulies Vitri Indrawati W. Warganda