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All Journal Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Geo-Image Journal Edu Geography Geosfera Indonesia Jurnal Bina Desa
Fahrudin Hanafi, Fahrudin
Department Of Geography, Faculty Of Social Sciences, State University Of Semarang, Sekaran Gunungpati, Semarang, 50229, Indonesia
Earth & Planetary Sciences Education Environmental Science Social Sciences

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KAJIAN PERUBAHAN PENGGUNAAN LAHAN TERHADAP LAJU EROSI PERMUKAAN DI DAERAH TANGKAPAN AIR WADUK MRICA Hanafi, Fahrudin
Jurnal Geografi Vol 12, No 1 (2015): January 2015
Publisher : Jurnal Geografi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Surface erosion is one of the determining variable of critical watershed, this related to river basin managementwhich always prioritized to critical land . Along with land use changes that lower watershed function, theassessment of land use change on surface erosion becomes very important. The research was conducted oncatchment of Mrica reservoir, especially in Serayu, Merawu, Lumajang, and Liangan. The data input of land usechanges are from 2001-2009 that using Landsat TM and ALOS. The soil loss calculating method is MUSLE(Modified Universal Soil Loss Equation). DEM data as a function of slope can be used to analyze at pixel level ofaccuracy,soil data as erodibility function, and discharge as erosivity function. Musle analysis results indicatethat the average surface erosion of Mrica reservoir catchment are 16,775,896 tons per year or 11,183,931 m3 peryear, equivalent to the soil loss thickness as 16:13 mm per year. Result of land use changes effect to surfaceerosion in the research area are moor, plantations, and scrub with R :0.85 positive correlation; 0.84, and 0.86.Forest, correlates negatively to the surface erosion with R coefficient: 0.88. Thus, managing land use with highcorrelation coefficient will greater impact to suppress soil loss/ erosion.
KAJIAN PERUBAHAN PENGGUNAAN LAHAN TERHADAP LAJU EROSI PERMUKAAN DI DAERAH TANGKAPAN AIR WADUK MRICA Hanafi, Fahrudin
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 12, No 1 (2015): January 2015
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v12i1.8009

Abstract

Surface erosion is one of the determining variable of critical watershed, this related to river basin managementwhich always prioritized to critical land . Along with land use changes that lower watershed function, theassessment of land use change on surface erosion becomes very important. The research was conducted oncatchment of Mrica reservoir, especially in Serayu, Merawu, Lumajang, and Liangan. The data input of land usechanges are from 2001-2009 that using Landsat TM and ALOS. The soil loss calculating method is MUSLE(Modified Universal Soil Loss Equation). DEM data as a function of slope can be used to analyze at pixel level ofaccuracy,soil data as erodibility function, and discharge as erosivity function. Musle analysis results indicatethat the average surface erosion of Mrica reservoir catchment are 16,775,896 tons per year or 11,183,931 m3 peryear, equivalent to the soil loss thickness as 16:13 mm per year. Result of land use changes effect to surfaceerosion in the research area are moor, plantations, and scrub with R :0.85 positive correlation; 0.84, and 0.86.Forest, correlates negatively to the surface erosion with R coefficient: 0.88. Thus, managing land use with highcorrelation coefficient will greater impact to suppress soil loss/ erosion.
MODEL CELULLAR AUTOMATA UNTUK PENGEMBANGAN RUANG TERBUKA HIJAU DI KOTA PEKALONGAN Sidiq, Wahid Akhsin Budi Nur; Hanafi, Fahrudin
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 15, No 2 (2018): July 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v15i2.15451

Abstract

Penelitian  ini  bertujuan  untuk mengetahui pola distibusi  Ruang  Terbuka Hijau  (RTH) dari tahun 2005, tahun 2010, tahun 2015 dan menyusun model distribusi spasial RTH tahun 2025 di Kota Pekalongan. Distribusi spasial RTH dan perubahan penggunaan lahan diperoleh dari hasil pengolahan data citra Digital Globe tahun 2005 dan tahun 2010 serta citra SPOT 5 (tahun 2015). penyusunan model distribusi spasial RTH pada tahun 2025 mempertimbangkan RTRW Kota  Pekalongan  yang  terdiri  dari  ruas  jalan  (jalan  eksisting  dan  rencana  pengembangan jalan) dan rencana pengembangan kawasan.Penelitian ini menggunakan pemodelan berbasis raster dengan menggunakan pendekatan cellular automata yang memanfaatkan LanduseSim 2.0  sebagai  software  pengolahannya  selain  Arc.GIS  10.5    Berdasarkan  hasil  penelitian, menunjukan  bahwa  penggunaan  lahan  di  Kota  Pekalongan  dalam  kurun  waktu  10  tahun terakhir  sangat  dinamis.  Permukiman  merupakan  kelas  penggunaan  lahan  dengan peningkatan luas terbesar sebesar 313,17 hektar. Sedangkan penurunan luas terbesar terjadi pada  lahan  pertanian  yang  berkurang  sebesar  392,58  hektar.  Luas  RTH  eksisting  sebesar 614,51 hektar atau sekitar 13,17%  dengan trend tren perkembangan yang meningkat dalam kurun  waktu  10  tahun  terakhir  (201,63  hektar). Hasil  model  yang  disusun  dengan  tren perkembangan yang terus meningkat maka RTH di Kota Pekalongan diprediksi memiliki luas 816,14 hectar pada tahun 2025. RTH di Kota Pekalongan sebagian besar didominasi oleh jenis RTH  sepadan  jalan  dan  sepadan  sungai  dengan  pola  memanjang.  Prediksi  yang  telah dilakukan  maka  dapat  digambarkan  akan  terjadi  penambahan  luas  RTH  dengan  pola memanjang  sepanjang  jalan  dan  sungai.  Kedepannya  pemerintah  daerah  perlu  melakukan terobosan-terobosan  dalam  pengembangan  RTH  di  Kota  Pekalongan  dengan  alokasi  dana yang memadahi yang dapat diaplikasikan dalam bentuk hutan kota, taman dan sabuk pantai mangrove 
LAND COVER CHANGES STUDY OF UPSTREAM COKROYASAN WATERSHED ON MAXIMUM RETENTION Hanafi, Fahrudin; Budi Nur Sidiq, Wahid Aksin
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 14, No 2 (2017): July 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v14i2.11515

Abstract

This research takes location on upstream of Cokroyasan watershed, especially on Bandung weir catchment on Purworejo and Wonosobo District. Research objective is knowing maximum retention changes which represented by upstream Cokroyasan watershed curve number, related to land cover data series, soil type, rain, and peak flow (Qp). Research data quality controlled with data survey and overland flow data observed. Thus the relationship of particular land cover and watershed responses in generating peak flow can be determined.The land covers determine using multispectral classification of Landsat which detailed with manual interpretation and Google Earth image. Sampling selection defines by stratified random sampling technique of the smallest unit of land form. Effective rain determines by consistency test of rainfall data, frequency analysis, survey data and curve number composites. The effective rainfall generate using SCS model (Soil Conservation Service) which influenced by design rainfall, soil type, texture, and land cover.The results showed that within 15 years, the land cover of Bandung weir catchment change significantly. Especially plantation was reduced by 56% or 40.76 km2 while the settlements increased 412% to 64.20 Km2, and other land cover changes not significant (2% <). The analysis showed the peak flow in the upstream of Cokroyasan watershed changes on different return period. Although the different can only see on a more than two years return period. This means there was an increase of peak flow (discharge), as a result of maximum retention DAS dropped from 16- 18.29 m3/ s.The conclusion of this research indicate that land cover changes that occur within 15 years, influence on Curve Number changes, maximum retention, effective precipitation, and peak flow of upstream Cokroyasan watershed.
Strategi Pengelolaan Kekeringan Masyarakat Sub DAS Bompon di Lereng Kaki Vulkanik Pegunungan Sumbing Hanafi, Fahrudin; Juhadi, Juhadi; Iryanthony, Sigit Bayhu; Hakeem, Awanda Rais; Rahmadewi, Dinda Putri; Fitriyani, Fitriyani
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 1 (2019): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i1.10896

Abstract

Sub DAS Bompon merupakan daerah yang memiliki permasalahan bencana tergolong kompleks. Dilihat dari morfologinya yang terdiri dari lereng-lereng menjadikan daerah tersebut rawan longsor dan kekeringan terutama bagi penduduk yang tinggal dibagian igir-igir Sub DAS Bompon. Selain adanya dampak negatif, longsor juga memberikan dampak positif terkait dengan ketersediaan sumber daya air alami yakni mata air. Pada penelitian ini, kajian dilakukan pada setiap morfologi Sub DAS. Dari hasil observasi lapangan menunjukkan bahwa penduduk di bagian lereng atas dan lereng bawah perbukitan sebagian besar lebih memilih memanfaatkan mata air untuk kegiatan domestik. Sedangkan di bagian kaki lereng perbukitan, mata air lebih dimanfaatkan untuk kegiatan pertanian dan sebagian besar penduduk sudah menggunakan sumur dan PAM. Penelitian ini bertujuan untuk mengidentifikasi persebaran mata air dan air tanah serta menganalisis cara-cara pengelolaan penduduk dalam memanfaatkan sumber daya air dari mata air dan sumur. Dalam memanfaatkan dan mempertahankan kualitas mata air, penduduk melakukan strategi seperti membuat kolam tampungan, menancapkan bambu di pinggir tampungan mata air, membangun sumur pribadi maupun komunal, hingga mencari mata air di luar Sub DAS Bompon, dan lain-lain.Sub DAS Bompon is an area that has a complex disaster problem. Judging from the morphology that consists of slopes make the area prone to landslides and drought, especially for residents who live in the apex of Sub Basin Bompon. In addition to the negative impacts, landslides also provide a positive impact associated with the availability of natural water resources,  springs. In this study, the study was conducted on each sub-basin’s morphology. Field observations show that the population on the upper slopes and the slopes below the hills mostly prefer to use the spring for domestic activities. While at the foot of the slopes (toe), springs are more used for agricultural activities and most of the people are already using wells and PAM. This study aims to identify spread of the springs and analyze ways of managing the population in utilizing water resources from the spring. In utilizing and maintaining the quality of springs, residents to do strategies such as creating a pool of shelters, bamboo sticking on the edge of the pool, to find springs outside the Bompon River Basin, and others.
Tingkat Ketelitian Citra Terhadap Variasi Tinggi Terbang Menggunakan Wahana UAV Quadcopter di Kampus Universitas Negeri Semarang Mustofa, Moh. Zaenal Aripin; Tjahjono, Heri; Hanafi, Fahrudin
Geo-Image Vol 10 No 1 (2021): Geo-Image
Publisher : Geo-Image

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The growing use of maps demands innovation in accurate and fast map creation. There is aQuadcopter UAV ride which is a medium to get aerial photos quickly and precisely. But in itsimplementation there is still a discrepancy in the accuracy of the image with the conditions on thefield. The purpose of this study is to find out the level of accuracy of the imagery towards the flyingaltitude of the drone and the effectiveness of mapping using UAVs. This research is a quantitativedescriptive study with field data analysis methods. The analysis unit is 5 aerial photo images ofSemarang State University Campus with different heights. The results of this study are mappingunnes campus with Quadcopter UAV rides can produce detailed imagery with GSD <5 cm anddrone flying altitude below 150 m. The lower the flying altitude, the narrower the scope and thehigher the flying altitude, the wider the scope of the photo imagery obtained. Pemanfaatan peta yang semakin berkembang, menuntut inovasi dalam pembuatan petasecara akurat dan cepat. Adanya wahana UAV Quadcopter yang merupakan mediauntuk mendapatkan foto udara secara cepat dan tepat. Namun dalam pelaksanaannyamasih terdapat ketidaksesuaian ketelitian citra dengan kondisi di lapangan. Tujuanpenelitian ini yaitu untuk mengetahui tingkat ketelitian citra terhadap ketinggian terbangdrone dan efektivitas pemetaan menggunakan UAV. Penelitian ini adalah penelitiandeskriptif kuantitatif dengan metode analisis data lapangan. Unit analisisya yaitu 5 citrafoto udara Kampus Universitas Negeri Semarang dengan ketinggian yang berbeda. Hasilpenelitian ini yaitu pemetaan kampus Unnes dengan wahana UAV Quadcopter dapatmenghasilkan citra yang detail dengan GSD <5 cm dan ketinggian terbang dronedibawah 150 m. Semakin rendah ketinggian terbang maka semakin sempit cakupannyadan semakin tinggi ketinggian terbang maka semakin luas cakupan citra foto yangdidapatkan.
Strategi Pengembangan Obyek Wisata Alam Curug Bayan dalam Meningkatkan Perekonomian Desa Ketenger Kecamatan Baturraden Kabupaten Banyumas Pratama, Anggi Galih; Hanafi, Fahrudin
Edu Geography Vol 9 No 2 (2021): Vol 9 No 2 (2021)
Publisher : Edu Geography

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Abstract

With the existence of tourism, a country especially the local government of tourist attraction including managers and tourism economic activists will get income from tourism attraction. Desa Ketenger is famous for the natural beauty, there are nine waterfalls (curug) that never dry out even in the dry season. Desa Ketenger is a village that has a tourist spot namely Curug Bayan which is the location that will be the object of research. The potential of the Curug Bayan tourism attraction needs to be balanced with comprehensive management. This research aims to know the internal and external factors and development strategies of the Curug Bayan Tourism Attraction, and how they contribute to the village economy. This research is quantitative tend. The responder of this research are tourists and the people of Desa Ketenger, especially those who carry out economic activities in the area of Curug Bayan Tourism Attraction. The sampling used a proportionate random sampling technique and to determined the number of samples the researcher used the Slovin formula with an error rate of 15% so that based on the calculation, we get 42 respondents for tourists and 44 respondents for villagers. The data collection techniques were questionnaire, observation, and documentation. This research used a SWOT analysis and descriptive analysis. The results showed that in the Matrix Grand Strategy, development respondents were in quadrant 1 or growth strategy, that is to make optimal use of the strengths and opportunities they have. The contribution of the Curug Bayan Tourism Attraction to the village government is 2% annually. Desa Ketenger merupakan desa yang mempunyai tempat wisata berupa Curug Bayan yang merupakan lokasi yang akan menjadi obyek penelitian Potensi yang dimiliki obyek wisata Curug Bayan perlu ada pengembangan yang diimbangi dengan manajemen secara komprehensif. Tujuan dalam penelitian ini adalah mengetahui faktor internal dan eksternal dan strategi pengembangan Obyek Wisata Curug bayan, dan bagaimana kontribusinya dalam perekonomian desa. Penelitian ini bersifat kuantitatif. Populasi penelitian ini adalah wisatawan dan masyarakat desa Ketenger khususnya yang melakukan aktivitas ekonomi di area Obyek Wisata Curug Bayan. Pengambilan sampel menggunakan teknik proportionate random sampling dan untuk menentukan jumlah sampel peneliti menggunakan rumus slovin dengan taraf kesalahan 15% sehingga berdasarkan perhitungan mendapatkan 42 responden untuk wisatawan dan 44 responden untuk masyarakat desa. Teknik pengambilan data berupa kuesioner, observasi, dan dokumentasi.Penelitian ini menggunakan analisis SWOT dan analisis deskriptif. Hasil penelitian menunjukan dalam Matrix Grand Strategy terlihat hasil responden pengembangan berada di posisi kuadran 1 atau Strategi pertumbuhan, yaitu memanfaatkan seoptimal mungkin kekuatan dan peluang yang dimiliki. Kontribusi Obyek Wisata Curug bayan terhadap pemerintah desa sebesar 2% setiap tahunnya.
Aplikasi Model Rusle untuk Estimasi Kehilangan Tanah Bagian Hulu di Sub Das Garang, Jawa Tengah Hanafi, Fahrudin; Pamungkas, Dany
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 18, No 1 (2021): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v18i1.28079

Abstract

The Garang watershed is one of the main rivers passing through Semarang City, Central Java. Garang uptream is mostly a buffer zone and a catchment area for the water and soil resources conservation of Semarang City and surroundings. This research is located in the upstream Garang watershed, with the aim of knowing the level of erosion or soil loss tolerance due to land use change.The erosion model is specific to sheet erosion which modeled with RUSLE (Revised Universal Soil Loss Equation) method. The data used are (R) ground rainfall from 7 hydrological stations for 10 years, (K) soil types derived from land form interpretation, (LS) length and slope from SRTM radar data, (CP) conservation and land cover derived using a multispectral supervised classification (maximum likelihood). The quality of modeling is maintained through validation of input data, such as the normal ratio method and consistency test of rain data, soil texture and color surveys for soil data, confusion matrices for land cover and slope validation.The research results of the upstream Garang watershed area of 1191,56 hectares (14.14%), the erosion that occurred was still below the allowable erosion limit, while the area of 7.232,67 hectares (85.86%) was erosion that occurred above the allowable erosion value. The average soil loss is 222 tonnes / ha / year with the potential for soil loss up to 39,236 tonnes per year or soil loss thickness of 3.8 cm. Even though it is within the threshold, this must be controlled considering the importance of the upstream Garang watershed, whose land cover has begun to change its function to agriculture and plantations on sloping land.
Tingkat Ketelitian Citra Terhadap Variasi Tinggi Terbang Menggunakan Wahana UAV Quadcopter di Kampus Universitas Negeri Semarang Mustofa, Moh. Zaenal Aripin; Tjahjono, Heri; Hanafi, Fahrudin
Geo-Image Vol 10 No 1 (2021): Geo-Image
Publisher : Geo-Image

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The growing use of maps demands innovation in accurate and fast map creation. There is aQuadcopter UAV ride which is a medium to get aerial photos quickly and precisely. But in itsimplementation there is still a discrepancy in the accuracy of the image with the conditions on thefield. The purpose of this study is to find out the level of accuracy of the imagery towards the flyingaltitude of the drone and the effectiveness of mapping using UAVs. This research is a quantitativedescriptive study with field data analysis methods. The analysis unit is 5 aerial photo images ofSemarang State University Campus with different heights. The results of this study are mappingunnes campus with Quadcopter UAV rides can produce detailed imagery with GSD <5 cm anddrone flying altitude below 150 m. The lower the flying altitude, the narrower the scope and thehigher the flying altitude, the wider the scope of the photo imagery obtained. Pemanfaatan peta yang semakin berkembang, menuntut inovasi dalam pembuatan petasecara akurat dan cepat. Adanya wahana UAV Quadcopter yang merupakan mediauntuk mendapatkan foto udara secara cepat dan tepat. Namun dalam pelaksanaannyamasih terdapat ketidaksesuaian ketelitian citra dengan kondisi di lapangan. Tujuanpenelitian ini yaitu untuk mengetahui tingkat ketelitian citra terhadap ketinggian terbangdrone dan efektivitas pemetaan menggunakan UAV. Penelitian ini adalah penelitiandeskriptif kuantitatif dengan metode analisis data lapangan. Unit analisisya yaitu 5 citrafoto udara Kampus Universitas Negeri Semarang dengan ketinggian yang berbeda. Hasilpenelitian ini yaitu pemetaan kampus Unnes dengan wahana UAV Quadcopter dapatmenghasilkan citra yang detail dengan GSD <5 cm dan ketinggian terbang dronedibawah 150 m. Semakin rendah ketinggian terbang maka semakin sempit cakupannyadan semakin tinggi ketinggian terbang maka semakin luas cakupan citra foto yangdidapatkan.
Strategi Pengembangan Obyek Wisata Alam Curug Bayan dalam Meningkatkan Perekonomian Desa Ketenger Kecamatan Baturraden Kabupaten Banyumas Pratama, Anggi Galih; Hanafi, Fahrudin
Edu Geography Vol 9 No 2 (2021): Vol 9 No 2 (2021)
Publisher : Jurusan Geografi, Fakultas Ilmu Sosial, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

With the existence of tourism, a country especially the local government of tourist attraction including managers and tourism economic activists will get income from tourism attraction. Desa Ketenger is famous for the natural beauty, there are nine waterfalls (curug) that never dry out even in the dry season. Desa Ketenger is a village that has a tourist spot namely Curug Bayan which is the location that will be the object of research. The potential of the Curug Bayan tourism attraction needs to be balanced with comprehensive management. This research aims to know the internal and external factors and development strategies of the Curug Bayan Tourism Attraction, and how they contribute to the village economy. This research is quantitative tend. The responder of this research are tourists and the people of Desa Ketenger, especially those who carry out economic activities in the area of Curug Bayan Tourism Attraction. The sampling used a proportionate random sampling technique and to determined the number of samples the researcher used the Slovin formula with an error rate of 15% so that based on the calculation, we get 42 respondents for tourists and 44 respondents for villagers. The data collection techniques were questionnaire, observation, and documentation. This research used a SWOT analysis and descriptive analysis. The results showed that in the Matrix Grand Strategy, development respondents were in quadrant 1 or growth strategy, that is to make optimal use of the strengths and opportunities they have. The contribution of the Curug Bayan Tourism Attraction to the village government is 2% annually. Desa Ketenger merupakan desa yang mempunyai tempat wisata berupa Curug Bayan yang merupakan lokasi yang akan menjadi obyek penelitian Potensi yang dimiliki obyek wisata Curug Bayan perlu ada pengembangan yang diimbangi dengan manajemen secara komprehensif. Tujuan dalam penelitian ini adalah mengetahui faktor internal dan eksternal dan strategi pengembangan Obyek Wisata Curug bayan, dan bagaimana kontribusinya dalam perekonomian desa. Penelitian ini bersifat kuantitatif. Populasi penelitian ini adalah wisatawan dan masyarakat desa Ketenger khususnya yang melakukan aktivitas ekonomi di area Obyek Wisata Curug Bayan. Pengambilan sampel menggunakan teknik proportionate random sampling dan untuk menentukan jumlah sampel peneliti menggunakan rumus slovin dengan taraf kesalahan 15% sehingga berdasarkan perhitungan mendapatkan 42 responden untuk wisatawan dan 44 responden untuk masyarakat desa. Teknik pengambilan data berupa kuesioner, observasi, dan dokumentasi.Penelitian ini menggunakan analisis SWOT dan analisis deskriptif. Hasil penelitian menunjukan dalam Matrix Grand Strategy terlihat hasil responden pengembangan berada di posisi kuadran 1 atau Strategi pertumbuhan, yaitu memanfaatkan seoptimal mungkin kekuatan dan peluang yang dimiliki. Kontribusi Obyek Wisata Curug bayan terhadap pemerintah desa sebesar 2% setiap tahunnya.
Co-Authors Abd. Rasyid Syamsuri Budi Nur Sidiq, Wahid Aksin Dinda Putri Rahmadewi Fajar Setiawan Fitriyani Fitriyani Hakeem, Awanda Rais Heri Tjahjono Indriyani, Apriliya Juhadi Juhadi Lathif, Avika Damayanti Muhammad Rivai Pamungkas, Dany Pramukti, Dita Intan Pratama, Anggi Galih Rahmadewi, Dinda Putri Rahmah, Aulia Nihyatur Rivai, Win Sigit Bayhu Iryanthony, Sigit Bayhu Wahid Akhsin Budi Nur Sidiq, Wahid Akhsin Budi Nur