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All Journal Indonesian Journal of Geography Geo Media: Majalah Ilmiah dan Informasi Kegeografian POSITRON Media Komunikasi Geografi Majalah Geografi Indonesia Journal of Degraded and Mining Lands Management Jurnal Sumberdaya Alam dan Lingkungan Forum Geografi Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Teknologi Lingkungan Journal of Geosciences and Environmental Studies
Langgeng Wahyu Santosa
Fakultas Geografi Universitas Gadjah Mada, Yogyakarta, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Physics Social Sciences Other

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Distribution of natural resources and population density in the merapi volcano area Sutikno Sutikno; Widiyanto Widiyanto; Langgeng Wahyu Santosa; Andri Kurniawan; Taufik Hery Purwanto
Indonesian Journal of Geography Vol 35, No 2 (2003): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.132 KB) | DOI: 10.22146/ijg.57270

Abstract

The objective of this research is to study spatial distribution of natural resources and their relation to population density of the Merapi volcano area Survey method was used in this research, and started by thematic map and remote sensing imagery imerpretationdieldwork was carried out to check the interpretation result and to observe the actual natural resources in the sample areas were determined by purposive sampling. Population density data were collected by secondary data from sub-district. Descriptive, qualitative approach was used to data analysis and landform unit was used for evaluation of the natural resources.. The findings of this research are: spatially the natural resources, potency varies according to landform unit, and each landform unit has specific natural resources potency, it). the availability of the natural resources in the landform unit has closed relationship to the population density, high and enormous of natural resources usually followed by densely populated, the high densely populated area not always influenced by the existing of the natural resources but also by the functional of the area.
PENGARUH VEGETASI TERHADAP DINAMIKA PERKEMBANGAN GUMUK PASIR DI PESISIR PARANGKUSUMO Fahad Nuraini; Sunarto Sunarto; Langgeng Wahyu Santosa
Geo Media: Majalah Ilmiah dan Informasi Kegeografian Vol 14, No 2 (2016): Geo Media: Majalah Ilmiah dan Informasi Kegeografian
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.227 KB) | DOI: 10.21831/gm.v14i2.13810

Abstract

AbstrakPenelitian ini dilakukan di kawasan gumuk pasir aktif pada lorong angin alami Pesisir Parangkusumo dengan tujuan mengetahui pengaruh tutupan lahan vegetasi pada bentuklahan gumuk pasir di Pesisir Parangkusumo, sedangkan perkembangan normal gumuk pasir terjadi tanpa tutupan. Penelitian ini merupakan penelitian eksploratif-survey dengan maksud mengungkapkan pengaruh vegetasi terhadap perkembangan bentuklahan, dengan fokus peran vegetasi sebagai ecological engineering. Penelitian dilakukan dengan mengidentifikasi pengaruh vegetasi dalam perkembangan gumuk pasir dilihat dari faktor pembentuk yaitu proses deflasi dan juga identifikasi morfologi. Hasil penelitian menunjukkan pada area gumuk pasir terdapat beberapa tipe vegetasi penutup yaitu vegetasi insitu dan eksitu. Vegetasi insitu merupakan vegetasi alami gumuk pasir yaitu pandan, rumput teki, dan siwalan; sedangkan vegetasi eksitu berupa penghutanan dengan vegetasi cemara dan akasia. Kedua tipe vegetasi tersebut berdampak terhadap dinamika perkembangan gumuk pasir yang terjadi secara perlahan dalam kurun waktu tertentu seiring dengan pertumbuhan vegetasi. Efek dari vegetasi menghasilkan gangguan gelembur permukaan sampai dengan perkembangan lubang deflasi sebagai indikator kerusakan gumuk pasir. Kata kunci: Gumuk Pasir, Vegetasi, Parangkusumo
Analisis Genesa Hidrogeokimia Airtanah Menggunakan Diagram Piper Segiempat di Wilayah Pesisir Mice Putri Afriyani; Langgeng Wahyu Santosa; TJahyo Nugroho Adji
Media Komunikasi Geografi Vol. 21 No. 1 (2020)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/mkg.v20i2.21331

Abstract

Penelitian dilakukan di wilayah Kecamatan Lhoknga Kabupaten Aceh Besar. Tujuan penelitian ini untuk menganalisis genesa hidrogeokimia airtanah di wilayah kepesisiran dan menganalis  proses-proses  hidrogeokimia yang terjadi pada airtanah bebas  pada setiap bentuklahan di wilayah kepesisiran. Pengambilan sampel dilakukan dengan mempertimbangkan variasi nilai Daya Hantar Listrik, aliran airtanah dan satuan bentuklahan. Data yang digunakan berupa kandungan ion mayor di dalam airtanah yang diperoleh berdasarkan analisis laboratorium. Analisis tipe hidrogeokimia airtanah  dilakukan dengan menggunakan  diagram piper segiempat. Berdasarkan hasil analisis diagram piper segiempat menunjukkan sebagian besar tipe hidrogeokimia pada daerah penelitian merupakan tipe airtanah semi-bikarbonat (III) yang tersebar merata pada bentuklahan fluviomarin, sementara pada bentuklahan karst, beting gisik muda dan beting gisik tua tipe airtanah semi bikarbonat (II) (tersebar mengelompok. Airtanah bikarbonat (I) terdapat pada bentuklahan karst. Airtanah evaporit (III) tersebar mengelompok pada bentuklahan beting gisik muda dan tanggul alam Selanjutnya, airtanah sulfat (IV) dapat ditemui pada bentuklahan beting gisik tua dan beting gisik muda.
Analisis Ketersediaan Airtanah dengan Metode Statis di Pulau Pasaran Maryadi Budi Wiyono; Tjahyo Nugroho Adji; Langgeng Wahyu Santosa
Media Komunikasi Geografi Vol. 21 No. 2 (2020)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/mkg.v21i2.30259

Abstract

Pulau Pasaran adalah sistem daratan terpisah yang minim sumberdaya airtanah. Jumlah airtanah yang sedikit menjadi sangat rentan hilang akibat konsentrasi unsur cemaran yang tinggi di lingkungan dan pengaruh air laut. Tujuan penelitian ini yaitu: menganalisis ketersediaan airtanah dan kebutuhan air domestik di Pulau Pasaran. Investigasi ketersediaan airtanah dikaji dengan metode ketersediaa air statis. Investigasi kebutuhan air domestik dikaji dengan metode berbasis data sekunder memanfaatkan data hasil survei Ditjen Sumberdaya Air Kementerian Pekerjaan Umum dan Perumahan Rakyat Indonesia. Hasil penelitian menunjukkan bahwa ketersediaan airtanah di Pulau Pasaran sebesar 179359,74 liter per tahun, sementara hasil aman untuk airtanah yang dapat diambil per tahun adalah 14072,84 liter atau 38,5 liter per hari. Kebutuhan air domestik di Pulau Pasaran tahun 2020 berdasarkan hasil analisis ialah sebesar 74040 liter per hari, sehingga dapat disimpulkan bahwa potensi ketersediaan airtanah untuk mendukung kebutuhan air domestik di Pulau Pasaran ialah buruk. Upaya pengelolaan berbasis rainwater harvesting menjadi pilihan yang tepat dalam skala pulau kecil.
Identification of Land Degradation and Method of Solution in Zone of Baturagung Hill at Gunung Kidul Regency Langgeng Wahyu Santosa
Forum Geografi Vol 19, No 1 (2005): July 2005
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v19i1.4571

Abstract

Baturagung hill is a folded hill range consisting mainly of Tertiary volcanic rocks which have been undergoing severe faulting, jointing and weathering. Lies on the altitude between 200 and 700 meter from see level, the area is characterized by sloping to steep relief with 30% to 40% of slope, and shallow soils with scattered outcrops. Such geomorphological setting has made the area subject to intense soil erosion and masswasthing. Mining activates has also been accounted for the explanation of the current heightened land degradation in the area. The present paper, accordingly, is intended to identify the land degradation by considering mass movement, bare land, and mining activity parameters. The present paper founds that the Baturagung hill can be divided into three zones, namely: (1) the zone of no to low degradation (hill slope and inter-hill valley); (2) the zone of high degradation rate (within the area having 30 40% of slope); and (3) the zone of severe degradation (within the area having slope of more than 45%).
Hydromorphology of the Unconfined Groundwater in the South of Klaten District (Data Before Earthquake Mei 27th 2006) Langgeng Wahyu Santosa
Forum Geografi Vol 20, No 2 (2006): December 2006
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v20i2.1809

Abstract

There are some characteristics and distributions of unconfined groundwater variation in the research area. Those are related to a system of water supply and consumptive use for drinking water. Variation of the groundwater characteristic depends on variation of morphology. Therefore, it is needed to delineate hydromorphology units of the regions as a base on groundwater resources management, especially for drinking water. The aims of the research are: (1) to study of the characteristic and distribution of unconfined groundwater variations base on landform units, (2) to study the factors that affect such variations, and (3) to establish the hydromorphology units of the regions for groundwater resources management, especially for drinking water. The method used in this research is landform approach and field survey. The sampling method is stratified sampling, based on landform as the analysis approach. Result of the research shows that there are some variations of groundwater characteristic at each landform. Landforms which have good groundwater characteristic are Hydromorphology Unit of Fluvio Volcanic Plain of Young Merapi (except Bayat region) and Hydromorphology Unit of Volcanic Foot Plain of Young Merapi. At those units, there are good quality of groundwater, bicarbonate water (hydrochemical type I), having low electric conductivity, shallow of water table, low in fluctuation, and middle to fast class in aquifer permeability. Those units are the most potential unconfined groundwater resources management for drinking water. The units which have poor groundwater characteristic are Hidromorphology Unit in Bayat Region, including Undulating Alluvial Plain, Fluvio Volcanic Plain of Young Merapi, and Swamp Alluvial Plain. Generally, the groundwater quality is medium to poor, the hydrochemical type is Va (initiation process of connate water) and type III (evaporate water), shallow up to medium of water table, and low to middle class of aquifer permeability. The taste of groundwater is brackish to saline with high concentration of chloride.
Hidrostratigrafi Akuifer sebagai Geoindikator Genesis Bentuk Lahan di Wilayah Kepesisiran Kabupaten Kulonprogo, Daerah Istimewa Yogyakarta Langgeng Wahyu Santosa
Forum Geografi Vol 26, No 2 (2012): December 2012
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v26i2.5070

Abstract

Purpose of this research is to study on aquifer hydrostratigraphy that can be a geo-indicator of geomorphological processes on the past, that describe of landform genetic in the research area. The research method is survey. The framework of analysis in this research is landform genetic. The results of the research indicate that: (1) "the forming of aquifer hydrostratigraphy in the research area is controlled by some of main processes in geomorphology, that show of landform genetic specifically". The research area consists of 3 aquifer hydrostratigraphy systems, each of the aquifer system has the typical characteristic, showed by system and pattern of material stratigraphy in the aquifer and variation of groundwater characteristic in the unconfined aquifer. (2) "spatiotemporally, landform genetic in the research area influences on the forming of aquifer hydrostratigraphy in the 3 phases, i.e. the first stage at the end of the Tertiary epoch (end of Pliocene era), second stage at the Quaternary epoch (as long as the Pleistocene period), and third stage at the Holocene era". The genesis and chronology of landform forming in the 3 phases above influence on the forming of system and pattern of aquifer hydrostratigraphy in the research area.
Kajian Hidrogeomorfologi Mataair di Sebagian Lereng Barat Gunungapi Lawu Langgeng Wahyu Santosa
Forum Geografi Vol 20, No 1 (2006): July 2006
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v20i1.1805

Abstract

Magma activities on earth surface cause dynamic of volcanic morphology from the volcanic cone up to fluvial volcanic plain. The changing of morphology is always followed by different slope, composition and thickness of material, and break of slope. This geomorphological conditions result in groundwater emerges forming spring belt. Accordingly, wether such phenomena are also the case in the west slope of Lawu volcano is investigated in this reseach. Hydrogeomorphology approach is applied to study of the spring characteristic and distribution in the research area. The result research shows that the distribution pattern of springs in the west slope of Lawu volcano is not like spring belt perfectly, like the strato volcano generally. It is caused by erosion processes, mass wasting intensively, Lawu fault and other faults. Most springs flow on the volcanic slope and volcanic foot morphology.
Soil Damage Control Techniques Based on Local Wisdom in Sumberbrantas Village, Batu City Febriani, Yenni; Santosa, Langgeng Wahyu; Harini, Rika
Journal of Geosciences and Environmental Studies Vol. 2 No. 1 (2025): March
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53697/ijgaes.v2i1.3553

Abstract

Sumberbrantas village faces potential soil damage due to agricultural intensification for biomass production on sloping land with high erosion rates. The importance of soil conservation through the local wisdom approach encourages this research to explore soil damage control techniques the local community applies. This study aims to identify local wisdom-based soil conservation techniques applied in land management for biomass production. The methods used included structured interviews with 90 respondents who work as farmers/gardeners, followed by field observations and documentation to collect primary data on community characteristics, land use, and conservation techniques. The results showed that the community applied conservation techniques in crop rotation, intercropping, and terracing as the primary efforts to reduce soil damage. Organic fertilizers, simple technologies such as hoeing, mechanical methods in the form of rolling terraces, and vegetative methods in the form of ground cover plants are also commonly applied. Most communities have gained this knowledge from generation to generation and through regular counseling. Land management based on community wisdom in Sumberbrantas Village effectively maintains land productivity while preserving the environment. These techniques reflect the community's adaptation to environmental challenges, with the potential to be further developed through modern innovations and local traditions.
Land carrying capacity status and land utilization optimization strategy in South Sorong, Indonesia Kondong, Hendrik; Kurniawan, Andri; Santosa, Langgeng Wahyu
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.7861

Abstract

Economic growth is the key to community welfare, especially in rural areas. Using land wisely is a simple way to improve the community's economic quality. At its core, the issue is whether the available land can be used most effectively since lousy management can lead to land degradation. This study aimed to identify the status of land carrying capacity and various strategies that can be carried out to optimize land in South Sorong, Indonesia. A spatial approach was used to analyze existing land conditions. Furthermore, the carrying capacity status was identified by considering land availability and potential community needs. Pressure State Responsibility (PSR) analysis was used to identify solutions that can be employed to maximize land resources. Research findings showed that existing land in South Sorong is dominated by forests (40.04%), swamps (36.47%), and mangroves (13.02%). The land carrying capacity status in South Sorong has a surplus value, meaning that existing land is more than sufficient to meet the population's needs, which depends on its productivity. Land development and optimization can be carried out but must involve multiple stakeholders and be carried out in a planned and careful manner so that environmental sustainability is maintained. Land optimization strategies that can be done are intensifying agriculture, adding infrastructure, and introducing mechanical technology in land management. Finally, the finding can be used as a basis for policymakers, especially in rural areas where the land carrying capacity status is still surplus.
Co-Authors Adji, Alief Rizky Purnama Afriyani, Mice Putri ANDRI KURNIAWAN Andri Kurniawan Anindya Kusumawati Arysandi, Safira Arum Bintoro Saputro Eko Haryono Fahad Nuraini Febriani, Yenni Karidewi Made Putri Kondong, Hendrik Luthfi Muta’ali Maryadi Budi Wiyono Mutaqin, Bachtiar W. Nisa, Raysa Khoirun Puspita, Ayunda MIlla Ramdani Salam Rika Harini Sigit Heru Murti Su Rito Hardoyo Su Ritohardoyo Sudrajat Sunarto Sunarto Sunarto Sunarto Sutikno Sutikno Sutikno Sutikno SUWARNO HADISUSANTO Tadubun, Maria Riswanti Taufik Hery Purwanto Tika Rachmawati Tjahyo Nugroho Adji Tjahyo Nugroho Adji Tjahyo Nugroho Adji Widiyanto Widiyanto Wiyono, Maryadi Budi Yoseph Kamun