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Spatial Integration for Assessing Land Condition in the Sileng Sub-Watershed, Magelang Regency: Integrasi Spasial untuk Penilaian Kondisi Lahan pada Sub-DAS Sileng, Kabupaten Magelang Tri Sulistyo, Aprilian; Arbiwati, Dyah; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 21 No 2 (2024): December 2024
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i2.15079

Land degradation in upland sub-watersheds poses serious threats to environmental sustainability, agricultural productivity, and disaster risk. This study aims to evaluate the land condition of the Sileng Sub-Watershed in Borobudur District, Central Java, using an integrated approach based on four key indicators: erosion index, land cover index, land use suitability, and landslide susceptibility. Field surveys and spatial analyses were conducted in 18 land system units, with supporting data derived from Sentinel-2 imagery and regional spatial planning maps. The results show that 61.1% of land systems are in good condition, 33.3% in fairly good condition, and 5.6% in moderate condition. While erosion risk is generally low, two land systems show critical erosion and landslide susceptibility due to steep slopes and minimal vegetative cover. The high land use suitability (88.36%) indicates strong adherence to spatial planning regulations, while the land cover index (63.71%) suggests moderate vegetation density. Overall, the integrated land condition index highlights both areas of ecological resilience and zones requiring rehabilitation. These findings offer valuable insights for sustainable watershed management and policy formulation, particularly in tropical highland areas vulnerable to land degradation and climate impacts.

Spatial Integration for Assessing Land Condition in the Sileng Sub-Watershed, Magelang Regency: Integrasi Spasial untuk Penilaian Kondisi Lahan pada Sub-DAS Sileng, Kabupaten Magelang Tri Sulistyo, Aprilian; Arbiwati, Dyah; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 21 No 2 (2024): December 2024
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i2.15079

Land degradation in upland sub-watersheds poses serious threats to environmental sustainability, agricultural productivity, and disaster risk. This study aims to evaluate the land condition of the Sileng Sub-Watershed in Borobudur District, Central Java, using an integrated approach based on four key indicators: erosion index, land cover index, land use suitability, and landslide susceptibility. Field surveys and spatial analyses were conducted in 18 land system units, with supporting data derived from Sentinel-2 imagery and regional spatial planning maps. The results show that 61.1% of land systems are in good condition, 33.3% in fairly good condition, and 5.6% in moderate condition. While erosion risk is generally low, two land systems show critical erosion and landslide susceptibility due to steep slopes and minimal vegetative cover. The high land use suitability (88.36%) indicates strong adherence to spatial planning regulations, while the land cover index (63.71%) suggests moderate vegetation density. Overall, the integrated land condition index highlights both areas of ecological resilience and zones requiring rehabilitation. These findings offer valuable insights for sustainable watershed management and policy formulation, particularly in tropical highland areas vulnerable to land degradation and climate impacts.

Soil Layers Properties of a Profile Developed on the Past Depositional Series on Merbabu Volcano Central Java Indonesia Nurcholis, Mohammad; Herlambang, Susila; Suwartikaningsih, Sri Aminah; Fiantis, Dian; Yudiantoro, Dwi Fitri
JOURNAL OF TROPICAL SOILS Vol. 24 No. 2: May 2019
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2019.v24i2.53-63

A wide and deep soil profile (around 1200 cm) was observed at Ketep Park West Slope of Merbabu volcano Central Java, Indonesia to identify the soil morphology, physical and, chemical and mineralogical properties. Results showed that several soil development processes occurred in each volcanic deposits with different characteristics. Most soil layers met some of andic soil properties criteria such bulk density <0.9 g.cm-3, P retention of >85%, and (Alo + ½ Feo) >2.0%. A thin melanic material showing black color layer was found at the lower part of the soil profile, i.e. in depth from 726 to 798 cm. The dominant material in most soil layers is an allophane. Minerals in the sand fraction were dominated by labradorite and augite, with some layers were hypersthene and green hornblende.

EVALUASI PENERAPAN SISTEM SETTLING POND DALAM PENGELOLAAN AIR ASAM TAMBANG DI PT INTERNASIONAL PRIMA COAL SAMARINDA KALIMANTAN TIMUR Subagja, Muhammad Rafif Riefanto; Nurcholis, Mohammad; Ardiansyah, Yudi; Dirja, Surya
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13947

PT Internasional Prima Coal is a coal mining company utilizing open-pit mining methods, which has the potential to generate acid mine water that can be environmentally damaging if discharged directly into rivers. Hence, the necessity for management, one of which includes the use of settling ponds. The research aims to understand the application of the settling pond system in acid water management and determine the quality of acid mine water and sediment from the inlet to the outlet zones of settling ponds 01 and 08. The research employed survey and laboratory analysis methods. Sampling of acid mine water utilizes grab sampling techniques, while sediment sampling utilizes a core sampler. Parameters used for acid mine water and sediment samples included pH of water, sediment pH (H2O, KCl), Eh, TSS, Fe, Mn, Pb, and Cd levels. Determination of acid mine water quality referred to the East Kalimantan Regional Regulation No. 2 of 2011 concerning the Quality Standards of Coal Industry Wastewater, specifically for pH, TSS, Fe, and Mn, and Minister of State for the Environment Decision No. KEP-51/MENLH/10/1995 for Pb and Cd. Sediment quality referenced the Guidelines for the Protection and Management of Aquatic Sediment Quality in Ontario. The research results indicate that acid mine water and sediment generated by mining activities exhibit characteristics of Fe, Mn, Pb, Cd, and TSS meeting the quality standards but possess low pH values (acidic), especially in Settling Pond 01. Acid mine water that underwent treatment experienced an increase in quality, making it safe for discharge into water bodies. The water flow rate requiring treatment in Settling Pond 01 is 1.110 m3/s sourced from rainwater, runoff, while Settling Pond 08 is 0.704 m3/s from rainwater, runoff, and pumping from the mine's sump pit.

KAJIAN TINGKAT PERKEMBANGAN DAN KLASIFIKASI TANAH PADA TOPOSEKUEN LERENG SELATAN GUNUNGAPI MERAPI DI DESA BALERANTE, KECAMATAN KEMALANG, KABUPATEN KLATEN Putri, Istimawati Rizki Marga; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13949

Topography is one factor that influences the pedogenic process. Balerante Village, Kemalang Subdistrict located on The Southern Slope of Merapi Volcano at an altitude between 680-2760 meters above sea level (masl) and frequently experiences topographical changes due to lava flows or eruptions. This research aims to study the level of soil development and to classify the soil based on classification systems of Soil Taxonomy, World Referense Base, and National Soil Classification. The method used in this research is a field survey by determining the location of the soil profile using a purposive sampling method based on the difference in altitude and overlaying Soil Type Maps, Contour Maps, and Slope Maps. Observations in the field include soil morphology and landscape, and analysis of the physical and chemical properties of the soil in the laboratory. The results showed that the three profiles 1129, 881, and 778 masl had diagnostic horizons: umbric epipedons and cambic endopedons. The soil development is at an intermediate stage. Soil classification at 1129 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is the District Cambisol. Soil classification at 881 masl according to the USDA Soil Taxonomy is Acrudoxic Hapludands; according to WRB is Andosols Cambic; according to the National Soil Classification is Umbric Andosol. Soil classification at 778 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is District Kambisols.

Ability of Sandy Soil to Retain Water in Various Coastal Sand Land Management Practices in Bugel Village, Kulon Progo Regency: Kemampuan Lahan Pasir Menahan Air pada Berbagai Praktik Pengelolaan Lahan di Desa Bugel Kabupaten Kulon Progo Tri Nursasomo, Muhammad; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15262

The reduction of agricultural land due to land conversion has compelled farmers to explore alternative cultivation areas such as coastal sandy soils, despite their limited water retention capacity. Agricultural land in Bugel Village, Kulon Progo Regency, is predominantly composed of sand and exhibits various land management practices. This study aims to analyze the influence of land management strategies on the water retention capacity of coastal sand soils and to identify related soil properties. Soil samples were collected through purposive sampling based on land use maps and direct observation, resulting in three sampling locations that represent different land management practices. Descriptive statistical methods were employed, and the data were analyzed using Analysis of Variance (ANOVA) followed by the Duncan Multiple Range Test (DMRT). The results showed a significant difference in permanent wilting point moisture content (P < 0.01), available moisture content (P < 0.05), and air-dried moisture content (P < 0.05). These findings underscore the importance of appropriate land management in enhancing the water-holding capacity of coastal sandy soils.

EVALUASI PENERAPAN SISTEM SETTLING POND DALAM PENGELOLAAN AIR ASAM TAMBANG DI PT INTERNASIONAL PRIMA COAL SAMARINDA KALIMANTAN TIMUR Subagja, Muhammad Rafif Riefanto; Nurcholis, Mohammad; Ardiansyah, Yudi; Dirja, Surya
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13947

PT Internasional Prima Coal is a coal mining company utilizing open-pit mining methods, which has the potential to generate acid mine water that can be environmentally damaging if discharged directly into rivers. Hence, the necessity for management, one of which includes the use of settling ponds. The research aims to understand the application of the settling pond system in acid water management and determine the quality of acid mine water and sediment from the inlet to the outlet zones of settling ponds 01 and 08. The research employed survey and laboratory analysis methods. Sampling of acid mine water utilizes grab sampling techniques, while sediment sampling utilizes a core sampler. Parameters used for acid mine water and sediment samples included pH of water, sediment pH (H2O, KCl), Eh, TSS, Fe, Mn, Pb, and Cd levels. Determination of acid mine water quality referred to the East Kalimantan Regional Regulation No. 2 of 2011 concerning the Quality Standards of Coal Industry Wastewater, specifically for pH, TSS, Fe, and Mn, and Minister of State for the Environment Decision No. KEP-51/MENLH/10/1995 for Pb and Cd. Sediment quality referenced the Guidelines for the Protection and Management of Aquatic Sediment Quality in Ontario. The research results indicate that acid mine water and sediment generated by mining activities exhibit characteristics of Fe, Mn, Pb, Cd, and TSS meeting the quality standards but possess low pH values (acidic), especially in Settling Pond 01. Acid mine water that underwent treatment experienced an increase in quality, making it safe for discharge into water bodies. The water flow rate requiring treatment in Settling Pond 01 is 1.110 m3/s sourced from rainwater, runoff, while Settling Pond 08 is 0.704 m3/s from rainwater, runoff, and pumping from the mine's sump pit.

KAJIAN TINGKAT PERKEMBANGAN DAN KLASIFIKASI TANAH PADA TOPOSEKUEN LERENG SELATAN GUNUNGAPI MERAPI DI DESA BALERANTE, KECAMATAN KEMALANG, KABUPATEN KLATEN Putri, Istimawati Rizki Marga; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13949

Topography is one factor that influences the pedogenic process. Balerante Village, Kemalang Subdistrict located on The Southern Slope of Merapi Volcano at an altitude between 680-2760 meters above sea level (masl) and frequently experiences topographical changes due to lava flows or eruptions. This research aims to study the level of soil development and to classify the soil based on classification systems of Soil Taxonomy, World Referense Base, and National Soil Classification. The method used in this research is a field survey by determining the location of the soil profile using a purposive sampling method based on the difference in altitude and overlaying Soil Type Maps, Contour Maps, and Slope Maps. Observations in the field include soil morphology and landscape, and analysis of the physical and chemical properties of the soil in the laboratory. The results showed that the three profiles 1129, 881, and 778 masl had diagnostic horizons: umbric epipedons and cambic endopedons. The soil development is at an intermediate stage. Soil classification at 1129 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is the District Cambisol. Soil classification at 881 masl according to the USDA Soil Taxonomy is Acrudoxic Hapludands; according to WRB is Andosols Cambic; according to the National Soil Classification is Umbric Andosol. Soil classification at 778 masl according to the USDA Soil Taxonomy is Andic Humudepts; according to WRB is Cambisols Andic; according to the National Soil Classification is District Kambisols.

Ability of Sandy Soil to Retain Water in Various Coastal Sand Land Management Practices in Bugel Village, Kulon Progo Regency: Kemampuan Lahan Pasir Menahan Air pada Berbagai Praktik Pengelolaan Lahan di Desa Bugel Kabupaten Kulon Progo Tri Nursasomo, Muhammad; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15262

The reduction of agricultural land due to land conversion has compelled farmers to explore alternative cultivation areas such as coastal sandy soils, despite their limited water retention capacity. Agricultural land in Bugel Village, Kulon Progo Regency, is predominantly composed of sand and exhibits various land management practices. This study aims to analyze the influence of land management strategies on the water retention capacity of coastal sand soils and to identify related soil properties. Soil samples were collected through purposive sampling based on land use maps and direct observation, resulting in three sampling locations that represent different land management practices. Descriptive statistical methods were employed, and the data were analyzed using Analysis of Variance (ANOVA) followed by the Duncan Multiple Range Test (DMRT). The results showed a significant difference in permanent wilting point moisture content (P < 0.01), available moisture content (P < 0.05), and air-dried moisture content (P < 0.05). These findings underscore the importance of appropriate land management in enhancing the water-holding capacity of coastal sandy soils.

The Effect of Purun Tikus (Eleocharis dulcis) and Organic Material Addition in Constructed Wetland Systems on the Improvement of Acid Mine Drainage Quality Simamora, Eprilia; Nurcholis, Mohammad; Ardian, Aldin; Ernawati, Rika; Winarno, Eddy
Jurnal Mineral, Energi dan Lingkungan Vol 8 No 2 (2024): Jurnal Mineral, Energi dan Lingkungan Volume 8, No. 2 Tahun 2024
Publisher : Fakultas Teknologi Mineral, Universitas Pembangunan Nasional (UPN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmel.v8i2.14694

Coal mining activities often cause environmental challenges, one of which is acid mine drainage (AMD) with low pH and elevated concentrations of heavy metals and suspended solids. This study aimed to assess water quality improvement through a constructed wetland system using Purun tikus (Eleocharis dulcis) and palm oil empty fruit bunch compost (TKKS). Laboratory-scale experiments were conducted with five treatment variations and three replications over a 20-day retention period. Results indicated that the media combination, with or without limestone addition, significantly altered the water quality parameters. The pH increased from 3.35 to 7.76; TSS decreased from 1,373.3 mg/L to 151 mg/L; Fe decreased from 33.15 mg/L to 2.68 mg/L; and Mn decreased from 7.06 mg/L to 0.45 mg/L over 20 days. These results indicate the potential of constructed wetlands using native plants and organic materials as an environmentally friendly strategy for treating mining wastewater.

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