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All Journal Jurnal Hutan Tropika Journal of Peat Science and Innovation (JPSI)
Santosa Yulianto
Jurusan Kehutanan Fakultas Pertanian Universitas Palangka Raya
Agriculture, Biological Sciences & Forestry Engineering Environmental Science Social Sciences

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Struktur, Komposisi dan Pertumbuhan Vegetasi pada Lahan Gambut Bekas Terbakar Tahun 2015 Di UPT Laboratorium Alam Hutan Gambut Sebangau: Structure, Composition and Vegetation Growth on Peat Land Used By Fire In 2015 At UPT Natural Laboratory Of Sebangau Peat Forest Canra P. Lumban Gaol; Wahyudi Wahyudi; Santosa Yulianto
HUTAN TROPIKA Vol 17 No 1 (2022): Volume 17 Nomor 1 Tahun 2022
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v17i1.4399

Abstract

This study aims to determine the structure, composition and growth of vegetation on peatlands burned in 2015 in the Natural Laboratory of Peat Forest (LAHG) Sebangau. The benefit of the research is to provide information on the structure, composition and growth of burned peat forest vegetation.Data retrieval using the checkered line method. Determination of the path with the technique of "Stratified Sampling" with a track area of 3 ha.The results of the analysis of the horizontal structure of the stand resemble an inverted J curve. The rehabilitated and non-rehabilitated areas changed the structure to large diameter classes. The vertical structure of the stand forms an inverted J curve although it is less consistent in the mid-height class. The burned area and not rehabilitated the structure changed in the largest diameter class. The rehabilitated burned area underwent changes in the form of improvements in the number and composition of species in the high-middle class due to rehabilitation activities. The highest Important Value Index (INP) in burned areas was (Combretocarpus rotundatus (Miq) at each growth stage, different for unburned areas the highest INP were (Syzygium sp.) seedlings and poles, sapling level (Garcinia bancana) and tree level (Syzygium sp.) Syzygium sp.).The composition of the rehabilitated area consisted of 12 types of seedlings, 8 types of saplings. The area that was not rehabilitated contained 11 types of seedlings, 13 types of saplings, 4 types of poles and 3 types of trees. The unburnt area contained 21 types of seedlings, 28 types of saplings, 26 types of poles and 23 types of trees. Species diversity and species richness in the burned areas are low, while the unburned forest areas are classified as medium and high. The evenness of species in the three forest conditions was high and evenly distributed. The highest vegetation growth in the rehabilitated area on the BFA transect was (Shorea balangeran (Korth.) Burck), while the slowest growth was (Eleocarpus sp.). On the CN transect, the highest vegetation growth was found in (Syzygium sp.) and the lowest growth was (Shorea balangeran (Korth.).
Karakteristik Spasial Data Hotspot MODIS Tahun 2019 Di Kota Palangka Raya Provinsi Kalimantan Tengah: Spatial Characteristics of MODIS Hotspot Data in 2019 in Palangka Raya City, Central Kalimantan Province Andre Pinem; Santosa Yulianto; Rini Dwiastuti
HUTAN TROPIKA Vol 17 No 1 (2022): Volume 17 Nomor 1 Tahun 2022
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v17i1.4442

Abstract

Forest and land fires in Palangka Raya City are events that almost occur every year during the dry season, forest and land fires in 2015 were recorded as one of the worst incidents in recent years. Fires in Palangka Raya City during the period January – August 2019 reached approximately 1222 hectares. The aim of the researcher to load the spatial data above is to help complete the data and be a reference in researching the spatial characteristics of the 2019 MODIS hotspot data in Palangka Raya City by examining the spatial characteristics of the MODIS hotspot data to predict forest and land fires, as well as to provide the latest information on hotspots. hotspots and the location of hotspots that need to be watched out for. The method used in this study is a combination of spatial analysis and fieldwork to obtain an overview of the spatial characteristics of the spatial data. The results of this study show that the distribution of MODIS hotspots in 2019 in the city of Palangka Raya is highest in the Sabangau sub-district while the lowest is in the Bukit Batu sub-district, with high and medium confidence levels, during a prolonged dry season and due to land clearing activities by burning. The characteristics of the MODIS hotspot in the city of Palangka Raya have 21 spatial characteristics in general consisting of vegetation types in the form of broadleaf acacia plants at sapling level, shrubs, conversion of agricultural land, and housing with road, river and peat distribution accessibility in the city of Palangka Raya.
Pemetaan Potensi Biomassa Permukaan Rawan Terbakar Berbasis Citra Landsat 8 Oli Di Kecamatan Kahayan Hilir Kabupaten Pulang Pisau: Mapping of Potential Burning Potential Biomass Based on Landsat 8 OLI in Kahayan Hilir District, Pulang Pisau Regency Krisna Wahyu; Santosa Yulianto; Penyang
HUTAN TROPIKA Vol 17 No 2 (2022): Volume 17 Nomor 2 Tahun 2022
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v17i2.8082

Abstract

Peatland fires in 2015 in Central Kalimantan were biomass fires on peatlands that burned with an area of ​​196,987 hectares and one of them was in Kahayan Hilir District. this research aims to determine the potential distribution of surface biomass and identify the types of vegetation. this research uses Landsat 8 OLI imagery in 2020 as well as land cover classification and calculation of the Vegetation Index (NDVI) which is then combined with an overlay to create a map of the distribution of land cover types based on their density which is then used for field checks and surface biomass calculations using the allometric formula on each type of land cover. Based on the research conducted, there are 8 types of land cover that can be identified and the percentage of total biomass, namely high density forest (1,419,013,40 tons or 62.58%), high density shrubs and shrubs (770,449.68 tons or 33.98%). ), High density settlements (44.169.32 tons or 1.95 %), high density oil palm plantations (21,518.77 tons or 0.95 %), High density open land (8,025.37 tons or 0.35%), plantations medium density palm oil (2,690.09 tons or 0.12%), medium density open land (1,545.81 tons or 0.07%) and low density open land (79.65 tons or 0.004%). The types of tree-level vegetation found in high-density forests are laban (Vitex pinnata), mahang damar (Macaranga triloba), and bungur (Lagerstroemia speciosa), while on understorey grass species rija-rija (Scleria sumatrensis) are found
Cakupan Gabungan Beberapa Das Mikro Dan Simulasi 2D Pengaliran Air Pada Bentang Lahan Kota Kasongan Di Kabupaten Katingan: Combined Coverage of Several Micro Watersheds and 2D Simulation of Water Flowing in Kasongan City Landscape in Katingan District Bismart Ferry Ibie; Santosa Yulianto; Sosilawaty Sosilawaty
HUTAN TROPIKA Vol 17 No 2 (2022): Volume 17 Nomor 2 Tahun 2022
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v17i2.8084

Abstract

In supporting a systematic and comprehensive Strategic Environmental Assessment of the detailed spatial planning (RDTR) and Zoning Regulations (PZ) of the technical documents in the City Planning Area Section (BWP). It is necessary to understand the threat of hydrometeorological disasters, especially floods and waterlogging. Therefore, it is necessary to study the hydrological boundaries and distribution of water flow. In supporting optimal urban planning, this research was carried out on the BWP RDTR of Kasongan City, Katingan Regency periods 2020-2040 which has an area of 4,639.98 Ha. The research was carried out in August-November 2022, by delineating Micro-watersheds (sub-sub-sub watersheds) in and around the Kasongan City BWP followed by carrying out 2D simulations of water flow and inundation. The results of the study show that the BWP RDTR and PZ of Kasongan City are overlaid with Micro DAS as ecological boundaries in the form of hydrological unit polygons, showing as many as 59 polygons are affected areas with an area of 10,413 Ha. The area includes the Salangaju, Salangawa, Katunen and Liting watersheds with a polygon area ranging from 1 to 617 Ha, with an average polygon area of 179.53 Ha. Thus, the ratio between the area affected and the area of BWP and PZ is 2.24%. In the Main Program Indications, there are areas that are indicated to be experiencing a threat of flooding and inundation. It is suggested, that in its implementation carefully and precisely consider areas outside the BWP, it is also necessary to pay attention to the alternatives and recommendations that have been set to avoid floods and water inundation
Analysis of Flood Vulnerability using Geographic Information Systems in the Kahayan Watershed, Gunung Mas District, Central Kalimantan: Analisis Tingkat Kerawanan Banjir Menggunakan Sistem Informasi Geografis Pada DAS Kahayan Kabupaten Gunung Mas, Kalimantan Tengah Hendrik Segah; Alfredo Liano; Santosa Yulianto; Setiarno Setiarno; Yanciluk Yanciluk
Journal of Peat Science and Innovation Vol. 1 No. 1 (2022): Journal of Peat Science and Innovation: June 2022
Publisher : Center for Development of Science, Technology and Peatland Innovation (PPIIG), University of Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (601.066 KB) | DOI: 10.59032/jpsi.v1i1.5541

Abstract

This study aims to determined the level of flood vulnerability and most dominant factors that cause flood vulnerability in the Kahayan watershed, Gunung Mas District in Central Kalimantan. This study used a quantitative method by looking at the effect of each flood parameter to determine the level of flood vulnerability or vulnerable areas in the Kahayan watershed. The results are based on research carried out in the Kahayan watershed which has 4 levels of flood vulnerability classification: low vulnerability, medium vulnerability, high vulnerability, and very high vulnerability. The high level of flood vulnerability was the largest area with an area of ​​568.146 ha or 65,25% of the Kahayan watershed area of ​​Gunung Mas District as a whole, the medium vulnerability level was 185.634 ha (21,32%), very high vulnerability level was 61,716 ha (7,09 %), and low vulnerability was the area with the smallest area of ​​55.231 ha (6,34%) of the total area of ​​the Kahayan watershed in this district. The sub-districts with the highest area at a very high level of flood susceptibility were Tewah sub-district and Kurun sub-district. The most dominant factor that causes flood vulnerability in the Kahayan watershed area of Gunung Mas District was the slope that reaches 0-8% which was included in the flat category, with 3 land criteria, namely floodplain areas, river border areas, and basin areas.
Co-Authors Alfredo Liano Andre Pinem Bismart Ferry Ibie Canra P. Lumban Gaol Hendrik Segah Krisna Wahyu Penyang, Penyang Rini Dwiastuti Setiarno Setiarno Sosilawaty Sosilawaty Wahyudi Wahyudi Yanciluk