44 research outputs found
THE EFFECT OF WATERSHED ENVIRONMENTAL CONDITIONS AND LANDUSE ON SEDIMENT YIELD IN ALO-POHU WATERSHED
No full textThe research carried out in alo-pohu watershed gorontalo province aims at
identifying the effect of watershed conditions and land use on the amount sheet
erosion, sediment yield and sediment delivery ratio. It is also intended to develop
them in a spatio-temporal distribution, and give recommendation for management
of environmental condition and land use in alo-pohu watershed to prevent damage
erosion and sediment. Data on environmental condition and land use were
collected by interpreting landsat images and topography map. Data on surface
erosion were obtained by means of direct measurement using 10 erosion plots
placed in the land units. Data on sediment were obtained by collecting water
samplesfrom the upper course, middle course, and lower course of the rivers. Data
on sheet erosion and.sediment yield were analyzed in a spatio-temporal manner
using geographic information systems (gis) and effect of watershed conditions and
land utilization on sheet erosion, sediment yield, and sediment delivery ratio are
tested using double regression analysis. The research results suggest significant
effect of watershed conditions and land use on sheet erosion. the largest amount of
erosion very likely occurred in wasteland (bero land) with steep slopes whereas the
least amount of erosion was found in undergrowth with flat slope (0-8%). the
amount of sheet erosion was 122.24 ton/ha/year. sediment yield in alo-pohu was
affected to a large extent by runoff rate, the width of watershed, percentage of
wasteland, and drainage density
Pendekatan Geomorfologi Dalam Survei Kejadian Erosi
No full textGeomorphology is the study of land shape, a process that causes the alteration of land shape and on both sides relationship between land shape and process of shape formation. In its application, Geomorphology is required in many fields which need land shape information and its implementation. Geomorphologic exploration results land classification into geomorphologic units. Erosion survey, by using geomorphologic approach, results some important information in land shape alteration such as to determine the cartography of design erosion, the cartography of erosion development, plain distribution into some 0erosion units that is marked by erosion intensity and the estimation of sediment result that is come from erosion process
EVALUASI KARAKTERISTIK KUALITAS AIR DANAU LIMBOTO
No full textThis research aims at evaluating water-quality characteristics in Limboto Lake ecosystem in accordance with its designation. The research took place in Limboto Lake and the rivers that drain water into the lake. Samples were taken at 5 spots in Limboto Lake and 8 spots at the surrounding rivers. The rivers that flow into Limboto Lake and were made as samples consisted of Alo River (3 samples), Toyidito River (2 samples), Molamahu River (1 sample), Molalahu River (1 sample) and also Alopohu Dam (1 sample). Instruments used were pH meter and thermometer for physical parameters, and AAS for chemical parameters. Microbiology was measured using MPN method. The results of the analysis indicated that the water quality in Limboto Lake and the surrounding rivers were polluted. The parameters of nitrate, phosphate and hydrogen sulfide were above the standard stipulated by the Government Regulation Number 82 of 2001
THE EFFECT OF WATERSHED ENVIRONMENTAL CONDITIONS AND LANDUSE ON SEDIMENT YIELD IN ALO-POHU WATERSHED
No full textThe research carried out in alo-pohu watershed gorontalo province aims at
identifying the effect of watershed conditions and land use on the amount sheet
erosion, sediment yield and sediment delivery ratio. It is also intended to develop
them in a spatio-temporal distribution, and give recommendation for management
of environmental condition and land use in alo-pohu watershed to prevent damage
erosion and sediment. Data on environmental condition and land use were
collected by interpreting landsat images and topography map. Data on surface
erosion were obtained by means of direct measurement using 10 erosion plots
placed in the land units. Data on sediment were obtained by collecting water
samplesfrom the upper course, middle course, and lower course of the rivers. Data
on sheet erosion and.sediment yield were analyzed in a spatio-temporal manner
using geographic information systems (gis) and effect of watershed conditions and
land utilization on sheet erosion, sediment yield, and sediment delivery ratio are
tested using double regression analysis. The research results suggest significant
effect of watershed conditions and land use on sheet erosion. the largest amount of
erosion very likely occurred in wasteland (bero land) with steep slopes whereas the
least amount of erosion was found in undergrowth with flat slope (0-8%). the
amount of sheet erosion was 122.24 ton/ha/year. sediment yield in alo-pohu was
affected to a large extent by runoff rate, the width of watershed, percentage of
wasteland, and drainage density
PREDIKSI DAMPAK EROSI PERMUKAAN PADA PEMBANGUNAN PERKEBUNAN KELAPA SAWIT DI KABUPATEN POHUWATO
No full textKondisi fisik lahan di Kabupaten Pohuwato sangat menunjang untuk pembangunan perkebunan kelapa sawit. Oleh sebab itu salah satu kebijakan pembangunan bidang pertanian dan perkebunan adalah pembangunan perkebunan kelapa sawit. Pengembangan perkebunan kelapa sawit di Provinsi Gorontalo khususnya di Kabupaten Pohuwato memberikan peluang untuk peningkatan pendapatan asli daerah. Hal ini disebabkan karena kelapa sawit merupakan salah satu komoditas unggulan yang memainkan peranan penting dalam perekonomian dan merupakan salah satu komoditas penghasil devisa. Kajian ini bertujuan untuk memprediksi dampak erosi permukaan pada pembangunan perkebunan kelapa sawit di Kabupaten Pohuwato pada saat kegiatan operasionalisasi. Lokasi penelitian ini adalah seluruh rencana lokasi pembangunan perkebunan kelapa sawit yang memiliki ijin dari Pemerintah Kabupaten Pohuwato seluas 120.750,46 Ha yang terdiri dari PT. Sawit Tiara Nusa, PT. Sawindo Cemerlang, PT. Banyan Tumbuh Lestari, PT. Inti Global Laksana, PT. Wira Sawit Mandiri, PT. Wiramas Permai. Pengambilan sampel berdasarkan satuan lahan bahwa sebagai stratanya berdasarkan kemiringan lereng atau stratified random sampling. Variabel dalam penelitian ini adalah besarnya erosi permukaan yang dihitung dengan metode USLE pada Tahun 2009 dan Tahun 2015. Hasil penelitian menunjukkan bahwa prediksi erosi permukaan yang mungkin terjadi pada Tahun 2009-2015 masih dalam kriteria sangat ringan untuk lahan dengan tindakan konservasi dan kategori sedang hingga berat pada lahan tanpa tindakan konservasi. Pada tahun 2009 tingkat erosi yang mungkin terjadi pada setiap lahan rencana perkebunan kelapa sawit dengan total luas wilayah 50.736,18 ha adalah 543,54 ton/ha/th. Pada prediksi Tahun 2015 tingkat erosi permukaan yang mungkin akan terjadi tanpa tindakan konservasi adalah 923,74 ton/ha/th. Erosi yang akan terjadi pada lahan dengan tindakan konservasi adalah 53,58 ton/ha/th (sangat ringan)
Karakteristik Kawasan Wisata Pantai Taula\u27a Kecamatan Bilato Kabupaten Gorontalo Provinsi Gorontalo
No full textCollaborative practices in the management of Taulaa Beach have not been maximized, including the minimal role of the community in beach maintenance and the lack of facilities and accessibility. This study aimed to assess the appropriateness of tourism in the Taula\u27a Beach area, located in the Bilato District of the Gorontalo Regency, inside the Gorontalo Province. The chosen research methodology entails the utilization of a survey-based approach. The process of data acquisition via direct observation and field measurements. The criteria that determine the acceptability of a tourism destination include water depth, beach type, beach breadth, water base material, current speed, beach slope, water brightness, land cover, presence of harmful biota, and availability of fresh water. The appropriateness of beach tourism is analyzed using the Tourism Suitability Index (IKW). The research findings yielded an IKW value of 77.4%. This value indicates that land suitability in the Taula\u27a Beach Tourism Area is included in the very suitable classification, specifically in the S1 category
Pengembangan Media Video Animasi Pembelajaran Berbasis Powtoon Pada Mata Pelajaran Geografi Materi Mitigasi Bencana Alam
No full textThis study aims to develop Powtoon-based learning animation video media in geography subjects, especially natural disaster mitigation materials. The research method is Research and development (RD). Data collection methods are observation, interviews, questionnaires, and documentation. The instrument used is a questionnaire. The validation of the developed media product was carried out through three stages: expert validation, limited trial, and general trial. Expert validation was carried out by media experts, materials experts, and geography teachers. The limited trial was conducted on 26 class XI students at SMA Negeri 1 Suwawa Timur totaling 26 people. The general trial was conducted on 133 students in Tapa High School and Suwawa High School, Bone Bolango Regency. The results of the material expert validation obtained a value of 78.18%, with the level of validity being included in a very valid qualification. The results of the validation by media experts obtained a value of 90%, with the level of validity being included in a very valid qualification. The results of the validation by the geography teacher obtained a value of 90% with the validity level of entering a very valid qualification. The results of the limited trial obtained a value of 90.96% (valid). The results of the general scale trial obtained a value of 91.48% (valid). Thus, Powtoon-based learning animation video media on geography subjects and natural disaster mitigation materials can be used as learning media in schools and get a very good response from students
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS SPARKOL VIDEOSCRIBE YANG DIINTEGRASIKAN DENGAN WONDERSHARE FILMORA PADA MATA PELAJARAN GEOGRAFI MATERI MITIGASI BENCANA ALAM
No full textDevelopment of Learning Media based on Sparkol VideoScribe Integrated with Wondershare Filmora on Geography Subject with Material of Natural Disaster Mitigation. This research aims to know the development of learning media based on Sparkol VideoScribe integrated with Wondershare Filmora on geography subject with material of natural disaster mitigation. This research applies Research and Development (R and D) method developed by Borg and Gall and adapted to the needs of the researcher. Data collection was conducted using observation, interview, questionnaire, and documentation in which the instrument used in the form of assessment criteria to know the feasibility of the media from the material expert, media expert, and geography teachers as well as students' responses on the learning media by using questionnaires. The collected data is research finding regarding the quality of learning media and suggestions for product revisions. The results of the validation of the material expert, media expert and the geography teacher obtained an average rating of 94.90% which is classified into "extremely valid " category. While the students' responses based on the results of a limited scale trial obtained a value of 89,88%, which is classified into the “extremely good†category. Then the students' responses based on the results of the general scale trial obtained a value of 84,59%, which is classified into the “extremely good†category. Thus, it can be concluded that learning media based on Sparkol VideoScribe integrated with Wondershare Filmora on geography subject with the material of natural disaster mitigation can be used as learning media in school and obtained good responses by students
Analisis Tipe Dan Bidang Gelincir Longsor Di Kabupaten Gorontalo Utara
No full textThe purpose of this study was to determine the type of landslides and analyze the landslide slip in North Gorontalo District, Gorontalo Province using the geoelectric method. This research begins by determining the type and kind of landslides found in the North Gorontalo District. The location of the measurement was carried out at 4 (four) locations, 1st Track in Tomilito District; 2nd track in Sumalata District; 3rd track in Monano District; and 4th track in East Sumalata District. The research method used was a field survey with a land unit approach. Data analysis to determine the type and kind of landslides is using the landslide classification index method. Analysis of geoelectric measurement results using the Schlumberger-Configuration. The results showed that the types of landslides that occurred in North Gorontalo Regency were the type of planar slide, rotational slide, slide flow, rock/topples. The average depth of the landslide slip that occurred was 5 – 15.9 meters. In general, landslides that occur in North Gorontalo Regency are caused by high rainfall and land conversion for agriculture
Evaluasi Dan Pengembangan Sekolah Menengah Atas Mengunakan Sistem Informasi Geografis Di Kabupaten Boalemo
No full textEvaluasi dan Pengembangan Sekolah Menengah Atas yang ideal menggunakan Sistem Informasi Geografi di Kabupaten Boalemo. Lokasi penelitian ini dilakukan di Kabupaten Boalemo Provinsi Gorontalo. Metode yang digunakan yaitu metode survey lapangan. Pengumpulan data primer diperoleh langsung dari lapangan seperti penggunaan lahan, kemiringan lereng, banjir, longsor, aksesbilitas, sempadan jalan dan jakauan pendidikan. Kemudian data sekunder diperoleh dari kepustakaan dengan melakukan studi seperti studi literatur/pustaka dan tinjauan media. Berdasarkan hasil yang diperoleh dari lapangan bahwa lokasi Sekolah Menengah Atas yang ideal terdiri dari 8 sekolah dengan presentasi 100% dan lokasi pengembangannya berada di antara Desa Tangga Barito dan Tangga Jaya Kecamatan Dulupi. Hal ini sesuai dengan Permendiknas No. 24 tahun 2007 dan Permendiknas No. 40 tahun 2008
