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All Journal Indonesian Journal of Geography Buletin Udayana Mengabdi Bumi Lestari E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Jurnal Arsitektur Lansekap Jurnal Penelitian Pengelolaan Daerah Aliran Sungai
R. Suyarto
Program Studi Agroekoteknologi Fakultas Pertanian Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Energy Environmental Science

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Aplikasi Sistem Informasi Geografi untuk Kajian Fluktuasi Muka Air Tanah dan Karakteristik Akuifer di Kecamatan Denpasar Selatan Kota Denpasar KADEK ARI DEWI WAHYUNI; R. SUYARTO; TATI BUDI KUSMIYARTI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.2, April 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Application of Geographic Information System for Study of Water Table Fluctuations and Characteristics of Aquifers in the South Denpasar District The water needs of the population in South Denpasar District vary greatly depending on community activities. The population and activities of the community that need clean water continue to increase, on the other hand the PDAM of Denpasar City is only able to meet the clean water needs of the population of 46.06% (PDAM Kota Denpasar, 2017). People who have not yet connected PDAM services use ground water as an alternative to making dug wells or bore wells. Excessive use of ground water and exceeding safe discharge will affect groundwater degradation. The purpose of this study was to determine groundwater fluctuations and aquifer characteristics.The method used is a field survey method and quantitative descriptive using ArcGIS 10.4 software. The results showed that the dry season water table depth ranged from 0,8 to 5 m and the rainy season ranged from 0,5 to 3,9 m with groundwater fluctuations ranging from 0.04 to 1,3 m. The direction of groundwater flow from the north to the south with degree N 183o E. A good aquifer is composed of medium-sized sand material, and medium sized brown sand material. Limited aquifers are composed of weathered meosen limestone and sea coral with a discharge of 5-10 liters/second.
Aplikasi Sistem Informasi Geografis untuk Pemetaan Potensi Banjir pada DAS Banyualit di Kabupaten Banyuwangi, Jawa Timur DICKY ARDIYAN NUGROHO PUTRA; WIYANTI WIYANTI; R. SUYARTO
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.11, No.1, Januari 2022
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Geographical Information System Application for Flood Potention Mapping in Banyualit Watershed, Banyuwangi Regency, East Java The Banyualit Watershed has an area of 25 km2, through 5 sub-districts consisting of 15 villages from upstream to downstream. Banyualit watershed has varied physical conditions, causing the potential for scattered floods to have different levels. The use of space that is not accordance with the carrying capacity of the environment as a result of land conversion and changes in the morphology of the watershed are getting narrower causing the flow of water to overflow into residential areas, plantations and rice fields in the event of heavy rains with a high enough intensity. The purpose of this study was to determine the distribution of flood potential levels along with the spatial distribution of flood potential in Banyualit watershed. The method used in this study is a scoring with six parameters, land use, slope, altitude, soil type, rainfall and river density. Each parameter has weight and score based on the size of the effect on flooding. The level of distribution of flood potential in Banyualit watershed is divided into four classes of flood potential, very low potential with an area of 21.57 ha (1%), low potential with an area of 466.33 ha (19%), medium potential with an area of 1.812.41 ha (71%) and high potential with an area of 224.44 ha (9%).
Aplikasi Sistem Informasi Geografi (SIG) untuk Pemetaan Akuifer di Kota Denpasar HARIANJA JUITA; R. SUYARTO; I WAYAN NUARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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ABSTRACT Application of Geographic Information System (GIS) for Mapping of Aquifers in Denpasar City Ground water is the water contained in the soil or rock layers below the soil surface. Water resources derived from groundwater generally directly used to meet the needs of clean water daily. Ground water is used each time would decline both in quality and quantity along with the number of people who exist in an area. The aim of this research is to examine characteristics of aquifer and find out direction of the groundwater flow. Descriptive method selected as the method in this research, which is reads and records forms data to find out types aquifer, aquifer thickness and the permeability of aquifer. Determining the point of wells location is using purposive sampling method and to analyze the aquifer characteristics data likes water quality (eg; temperature, acidity, total dissolved solids), direction groundwater flow, aquifer thickness, aquifer types and the permeability of aquifer using Spline method and IDW (Inverse Distance Weighting). The results of this research are map of temperature, total dissolved solids, pH, aquifer types, aquifer thickness, the permeability of aquifer and groundwater flow. There are poor quality of groundwater in Denpasar area (west, east, north and south area) shows by their temperature and acidity. On the other hand, the total dissolved solids shows good water quality in east Denpasar area only. Depth of the unconfined aquifer ranging from 10 - 40 m (deep) up to > 40 m (very deep), thickness of unconfined aquifer is 30 m (deep) up to > 40 m (very deep), permebility unconfined aquifer are slow, very slow and fast. Depth of confined aquifer start from 40-100 m (deep) up to >100 m (very deep), thickness confined aquifer are 40 m (shallow), 60 m (deep) up to >100 m (very deep), permeability of confined aquifer both slow and fast. Unconfined aquifer and confined aquifer generally are sands, gravel, sandstone, volcanic ash and limestone. Groundwater flow from north to south.   Keyword : Aquifer, Geographic Information System (GIS), Ground water
Analisis Neraca Air Untuk Kebutuhan Air Irigasi di Daerah Aliran Sungai (DAS) Tukad Buleleng, Kabupaten Buleleng FIRDA ARFIANA; R. SUYARTO; WIYANTI WIYANTI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.4, Oktober 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Analysis of Water Balance for Irrigation Water Needs in Tukad Buleleng Watershed, Buleleng Regency Population and human activity have increased so that land use changes resulting in the catchment area does not function optimally. Poor watershed function conditions result in water in the dry season becoming scarce. Drought occurs due to upstream imbalance of watersheds that undergo land function, so the water needs for rice fields are not met. The purpose of this study is to analyze the needs of irrigation water. The method used is descriptive quantitative by calculating from the stage of crop water requirement/CWR, farm water requirement/FWR and project water requirement/PWR. The results showed that the highest value of water needs/PWR projects occurred in the planting period I November III during the generative phase of 196,90 liters/second and the lowest occurred in the planting period II in May I during the fertilization and ripening phase 156,40 liters/second.
Pengaruh Morfometri DAS terhadap Debit dan Sedimentasi DAS Yeh Ho I DEWA PUTU GDE ABIJANA DHARMANANTA; R. SUYARTO; NI MADE TRIGUNASIH
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.1, Januari 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Impact of Watershed Morphometric to Debit and Suspended Load of Yeh Ho Watershed Watershed (DAS) is a land area which is a unity with the river and its tributaries, which functions to accommodate, store and drain water. Morphometryand physical properties of the watershed give effect to changes in discharge and river sediment content. With the aim of knowing the effect of water level on Yeh Ho watershed discharge and sedimentation and the correlation between morphometry and the physical condition of the watershed by ratting curve discharge and sediment content. This research was conducted in the Yeh Ho river flow area in Tabanan Regency from November - February 2018 with methods: (1) literature study, (2) analysis of satellite imagery with the world view image of the 2013-2015 observation year, (3) analysis of regional characteristics river flow using DEM imagery (digital elevation mode), (4) debit analysis and (5) analysis of sediment content. The results of the DEM analysis determine the characteristics and watershed boundaries which are then analyzed to produce morphometry and physical properties of the watershedwith data sources from (BAPPEDA Tabanan Regency). The results of the analysis show that the water level has an effect of 97% on the discharge and sedimentcontent. The correlation of morphometry and physical condition of watershed with ratting curve discharge and sediment content was expressed in morphometric scores of 120 (Good watershed conditions) and physical conditions in good and very good categories.
Pemetaan Tingkat Kekeringan Lahan pada Fenomena El Nino 2002, 2009, dan 2015 di Provinsi Bali dengan Teknologi Penginderaan Jauh dan Sistem Informasi Geografis NI PUTU AYU KRISMAYANI; I WAYAN NUARSA; R. SUYARTO
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.2, April 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Mapping of Land Drought in El Nino Phenomenon 2002, 2009 and 2015 in Bali Province Using Remote Sensing Technology and Geographical Information System Land dryness caused by the El Nino phenomenon in an area has a major impact on land productivity. The objectives of this study are (1) to compare the level of land dryness based on the El Nino phenomenon in 2002, 2009 and 2015, and (2) to determine the impact of El Nino on food crop production in Bali Province. To achieve this goal, this study uses Terra MODIS images. Drought condition is evaluated using vegetation greenness and air temperature parameters. Normalized Difference Vegetation Index (NDVI) and Vegetation Condition Index (VCI) are used to predict the vegetation greenness, where as Land Surface Temperature (LST) and Temperature Condition Index (TCI) are utilized to estimate the air temperature. Finally, Vegetation Healthy Index (VHI) is calculated based on value of VCI and TCI. The results shows that the El Nino phenomena in 2002 is the strongest dryness in Bali Province followed by the El Nino in 2015 and 2009. Most of the drought is spread over coastal area of Bali Province. There is the time lag around 6 months between decreasing of rainfall and appearance of drought symptoms. The total production of food crops in 2015 is the lowest, namely 1,032,067 tons, compared with production in 2002 and 2009 that is 1,127,452 tons and 1,252,443 tons respectively. However, statistically El Nino phenomena has no significant effect on food crop production. This is caused by the rice field irrigation sistem in Bali Province is still well maintained and the ability of farmers to mitigate the impact of drough on agriculture production.
Interpretasi Citra untuk Analisis Kapasitas Sungai Unda sebagai Tampungan Lahar Dingin Erupsi Gunung Agung Bali NI KADEK DIAN ASRI LESTARI; NI MADE TRIGUNASIH; I NYOMAN DIBIA; R. SUYARTO
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.2, April 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Imagery Interpretation for Analysis of Unda River Capacity to Retain Lahars Flow of Agung Volcano Eruption This study aims to determine the flow capacity of Unda River to retain lahars flow of Agung Volcano eruption using a descriptive exploratory method, the data through field surveys and analysis of satellite imagery. Sampling was determined based on the gradient and river's meander to produce 14 samples and 13 segments in the river flow. The cross section of the river is measured at each sample point with the mean section method, then estimating the volume of the river by multiplying the area between the two sections with the distance of the sample point. The lahar flood hazard assessment uses the Laharz application with the lahars scenario 1 million m3; 5 million m3; and 10 million m3. The results of the study showed that the capacity volume of the Unda River was 26.336.548,79 m3. Estimated area affected by scenario 1 million m3 covering 162,60 Ha; scenario 5 million m3 covering 399,19 Ha; and the scenario of 10 million m3 covering 533,77 Ha. The affected area reached 27 villages in the Karangasem Regency region and 20 villages in the Klungkung Regency area. The highest affected area for scenario of 1 million m3 is Muncan Village about 32,70 Ha; scenario 5 million m3 in Selat Village, Klungkung is 68,43 Ha; and the scenario of 10 million m3 in Tangkas Village about 266,01 Ha. The type of land use that affected is rice field land about 458,08 Ha; moor / mixed garden at 71,33 Ha; settlements is 147,72 Ha; and shrubs about 3,98 Ha.
Pemetaan Indeks Kesehatan Vegetasi dengan Menggunakan Data Penginderaan Jauh dan Sistem Informasi Geografis pada Kondisi El Nino, La Nina dan Normal di Provinsi Bali IDA AYU PUTU JELANTIK PARWATI; I WAYAN NUARSA; R. SUYARTO
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.2, April 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Mapping of Vegetation Health Index Using Remote Sensing Data and Geographical Information Systems in El Nino, La Nina and Normal Conditions in Bali Province This research is about mapping the vegetation health index using Terra Modis level 3 imagery in Bali Province in El Nino conditions in 2015, La Nina in 2016, and normal in 2017. The purpose of this research is (1) to calculate the vegetation health index in El Nino, La Nina and normal, (2) to map the distribution of drought in El Nino, La Nina, and normal conditions, and (3) to know the effects of El Nino, La Nina, and normal conditions on food crop production in Bali Province. The results showed that the vegetation health index in Bali Province was observed based on the drought class. There were 5 drought classes in 2015, 2016 and 2017. The most widespread extreme and strong drought occurred in the 2015 El Nino phenomenon with an area of ??152, 900 ha, followed by normal conditions in 2017 with an area of ??20,100 ha, and the smallest area was in 2016 with area of ??10,100 ha. Temporally, the level of drought in Bali Province in El Nino, La Nina and Normal conditions occurs in September and peaks in October and November, and decreases in December. Spatially, drought occurs in the southern, western, northern and eastern parts of Bali, meanwhile, in the central part, there is generally no drought. The highest production of food crops in Bali Province is shown by data in 2016, followed by production in 2015, and the lowest in 2017. Statistically, through the paired t-test, the El Nino and La Nina phenomena do not have a significant effect on food crop production compared to normal conditions.
Analisis Bentuk Lahan untuk Menentukan Zona Resapan Air di Lereng Selatan Kawasan Bedugul MOHAMMAD RAJU BELLY DALIMUNTHE; R. SUYARTO; I WAYAN DIARA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.2, April 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Landform Analysis to Determine Recharge Zone Potential in Southern Bedugul Area Water recharge area is one of the most important part in hydrologic cycle that aimed in passing groundwater, thus determining stability and sustainability of groundwater. The objective of this research to identify the characteristics of landforms on the southern Bedugul Area and determine the potential of the water recharge area in the process of groundwater formation. This research started from August 2017 until May 2018 included the secondary and primary data collection, and to thesis preparation. The method used in this research is survey and map interpretation purposive sampling method with the technique of landform analysis (topography, rock material, permeability, soil texture, and rainfall data) and spatial analysis (Geographic Information System and overlay). Maps that used in overlapping in this research were geological maps, hydrogeological maps, land type maps, and rainfall data. The result of this study obtained where in research location there are 4 (four) recharge water zones potential criteria, which are good potential, normal natural, start of critical, and critical. As for the research area is dominated by the area with a good potential as a recharge with an area of 3.791,37 ha (63,6 %), areas with normal natural recharge potential of 1.551,18 ha (26,43 %). The area with a start of critical recharge potential of 507,08 ha (7,63 %) and the critical criteria is only 19,37 ha (0,33 %).
Studi jangkauan layanan Taman Kota Lumintang, Denpasar, Bali I Gusti Ngurah Made Dwipayana; Naniek Kohdrata; R. Suyarto
Jurnal Arsitektur Lansekap Vol.7, No.1, April 2021
Publisher : Prodi Arsitektur Pertamanan, Fakultas Pertanian, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JAL.2021.v07.i01.p09

Abstract

Lumintang City Park is one of the green open spaces in Denpasar City. People frequently visit the city park to do some outdoor activities. The objectives of this study are to determine the service distance of Lumintang Park as a city park by its users in the context of the user’s home range, and to determine the frequency of user visits Lumintang City Park. The research method used in this study is a questionnaire method. Geographic Information System (GIS) is used to track down the domicile of the respondents. The study shows the area that serves most by Lumintang City Park is within the radius of 4 km. People who live in Denpasar are the dominant user of this city park. The highest frequency of visit to Lumintang City Park is one to two times a week.
Co-Authors Anak Agung Istri Kesumadewi ANDREY ANTASARI RANGKUTI ANGGIA WIDYA FATAHILLAH BINTANG REDITYA A. S DICKY ARDIYAN NUGROHO PUTRA FIRDA ARFIANA FRANSISKA PURBA HARIANJA JUITA I DEWA PUTU GDE ABIJANA DHARMANANTA I Gusti Ngurah Made Dwipayana I Ketut Sardiana I Nyoman Dibia I Wayan Diara I Wayan Nuarsa I WAYAN RUMADA IDA AYU PUTU JELANTIK PARWATI INDAYATI LANYA KADEK ARI DEWI WAHYUNI Ketut Dharma Susila Moh Saifulloh MOHAMMAD RAJU BELLY DALIMUNTHE NANIEK KOHDRATA NI KADEK DIAN ASRI LESTARI Ni Luh Ramaswati Purnawan NI PUTU AYU KRISMAYANI P. P. K. Wiguna Putu Perdana Kusuma Wiguna PUTU SINTAYANI BUANA Tati Budi Kusmiyarti WIYANTI WIYANTI Yoga Yuniadi