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Perbandingan Metode Soil Adjusted Vegetation Index (SAVI) dan Forest Canopy Density (FCD) untuk Identifikasi Tutupan Vegetasi (Kasus; Area Pembuatan Jalan Baru Singaraja-Mengwi)

Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Pub Date : 2021-04-20 DOI: 10.15294/JG.V18I1.25367

A. Sediyo, A. Nugraha, I. Putu, Ananda Citra, Article Info Abstrak

{"title":"Perbandingan Metode Soil Adjusted Vegetation Index (SAVI) dan Forest Canopy Density (FCD) untuk Identifikasi Tutupan Vegetasi (Kasus; Area Pembuatan Jalan Baru Singaraja-Mengwi)","authors":"A. Sediyo, A. Nugraha, I. Putu, Ananda Citra, Article Info Abstrak","doi":"10.15294/JG.V18I1.25367","DOIUrl":"https://doi.org/10.15294/JG.V18I1.25367","url":null,"abstract":"This research uses Landsat 8 OLI/TIRS image which objective to determine the accuracy level of SAVI method and FCD model in the identification of vegetation cover. It is done as an effort to assist in determining the right method of monitoring the change of vegetation cover in the forest area. Therefore, this research compares the vegetation index of Soil Adjusted Vegetation Index (SAVI) because it is able to suppress the background of the soil so that the vegetation cover is able to be displayed according to the conditions in the field. While the FCD model uses four variables such as; Advanced Vegetation Index (AVI), Bare Soil Index (BI), Shadow Index (SI), and thermal index using the Split-Windows Algorithm (SWA) method. Comparison results between SAVI and FCD models indicate that the higher accuracy of SAVI is 84% and FCD model is only 82%. It is possible because the limited use of research areas that show SAVI is superior due to heterogeneous conditions and it approaches the conditions in the field than the FCD model that is more group and only able to be realized in three classes. Based on the results, it was concluded that the vegetation index can be used in monitoring the limited area of research but it is also not absolute because it is possible that FCD model is better.","PeriodicalId":204573,"journal":{"name":"Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian","volume":"506 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116199561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Aplikasi Model Rusle untuk Estimasi Kehilangan Tanah Bagian Hulu di Sub Das Garang, Jawa Tengah Rusle的模型应用程序估计在爪哇岛中部的Sub - Das Garang上失去了上游土地

Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Pub Date : 2021-04-20 DOI: 10.15294/JG.V18I1.28079

Fahrudin Hanafi, D. Pamungkas

{"title":"Aplikasi Model Rusle untuk Estimasi Kehilangan Tanah Bagian Hulu di Sub Das Garang, Jawa Tengah","authors":"Fahrudin Hanafi, D. Pamungkas","doi":"10.15294/JG.V18I1.28079","DOIUrl":"https://doi.org/10.15294/JG.V18I1.28079","url":null,"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.","PeriodicalId":204573,"journal":{"name":"Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128691691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

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