bluuebunny/crossref_metadata_2025_split huggingface dataset:
The use of airborne Lidar data to analyze flood disaster area: case study of Sekarbela Subdistrict, Mataram
Authors: Hariyono M I , Kurniawan A A , Rokhmatuloh  , Tambunan M P 
Published: January 2022

Abstract
Lidar is a remote sensing technology that is developing and widely used today. This data has the advantage of having a very high spatial accuracy so that it is very supportive of mapping with detailed accuracy. There are various benefits of lidar data, one of which is for risk analysis of natural disasters. The purpose of this study is to use lidar data to analyze flood disasters in an area. The method uses information derived from the Lidar data, namely the Digital Surface Model (DSM) and the Digital Terrain Model (DTM), which results from ground and non-ground classification. From this data, topographical analysis is carried out, especially the river flow area and its influence on the surrounding area. The research location is the City of Mataram, Lombok, Indonesia. This location is a coastal area and the location through which the river flows into the sea. The results of the analysis of this study were compared with data on flood disasters that had occurred in that location as comparative data. The results showed that the analysis using Lidar data has excellent topographic accuracy as an approach in the analysis of flood disasters towards an area.
Simulation of land cover changes in the hydrological characteristics of The Central Citarum Sub-Watershed
Authors: Suryanta J , Nahib I , Turmudi  , Suwarno Y , Munajati S L , Suprajaka  
Published: January 2022

Abstract
The availability of water in the reservoirs in the Central Citarum sub-watershed must be sustainable because it is the mainstay of irrigation water, electricity, and drinking water in parts of West Java and DKI Jakarta. This study aims to determine the effect of land cover change on hydrological parameters by simulating the SWAT (Soil and Water Assessment Tool) model. The research area covering an area of 273,240.85 ha, based on observations of Spot imagery in 2019, has a forest cover of 20.16%. The surface runoff calculation shows that the Flow Regime Coefficient (KRA) is very high (128). Based on the simulation with SWAT, the KRA value will be better (79) if the 2019 RTRW is fulfilled. The results of several land cover scenarios show that an increase in the forest area of 10 – 12% will increase infiltration by about 8-9% and reduce surface runoff by about 8%, and groundwater recharge will be better. The flow of the Citarum river fluctuates and fills the Jatiluhur Cirata Reservoir with an average of 800,081,212.0 m3/year. One way to improve the hydrological function is to convert some dryland agriculture, streamlining urban forest plants to obtain a forest area of 37%.
The application of satellite derived bathymetry for coastline mapping
Authors: Dewi R S , Sofian I , Suprajaka  
Published: January 2022

Abstract
There is a gap in bathymetry data in shallow water due to the difficulty in measuring the depth. Meanwhile, to obtain an accurate datum-based coastline, sufficient depth and topography data are required. In the situation in which bathymetry data from the conventional method (sounding measurement) is limited, the bathymetry data resulted from Satellite Derived Bathymetry (SDB) algorithm can be an alternative solution. The SDB is estimated by correlating water depth and the spectral band of images. This research is conducted to develop a method that can be applied for coastline mapping by assessing the capability of SDB. For the integration of all input data, including land elevation and bathymetry data, a gridding method called stacked continuous curvature splines with tension is adopted. Coastline generated from the proposed method was relatively smooth and it was close to the shape of the land feature compared to coastline developed from other data sources such as the national bathymetry data and echo sounding data. From the results, we conclude that the SDB is promising in filling the gap of depth information in shallow water areas. A feasible coastline can be produced since depth information from the SDB model can increase the density of depth information required for generating a coastline model.
The estimation of total suspended matter from satellite imagery of tropical coastal water Berau Estuary, Indonesia
Authors: Ambarwulan W , Salama M S , Verhoef W , Mannaerts C. M. 
Published: January 2022

Abstract
Water in coastal and estuary areas needs to be investigated as human activities is allegedly decrease their quality. This has led to optical remote sensing for mapping optical water quality using empirical and semi-analytical approaches. Therefore, this study aims to estimate the Total Suspended Matter (TSM) concentration from Medium Resolution Imaging Spectrometer (MERIS) data using a spectral unmixing approach combined with a radiative transfer model. This approach was implemented in the equatorial tropical coastal water, the Berau estuary, Indonesia, by generating a look-up table (LUT) of top-of-atmosphere radiance spectra through the coupled forward models, and the endmembers were selected from the LUT. The spectral unmixing algorithm was employed to the MERIS data for decomposing the image into haze and sediment components. The data were then transformed into images of a constant haze level corresponding to 50 km visibility, and the atmospheric correction was applied. Furthermore, the TMS concentration was retrieved using the inverse semi-analytical Kubelka-Munk model. The result gave overestimated TSM concentration values on clear waters. However, in turbid waters, a lower RMSE was obtained, and the coefficient of determination was higher than in clear waters.
Accuracy Assessment of Land Use Change Analysis Using Google Earth in Sadar Watershed Mojokerto Regency
Authors: Islami F A , Tarigan S D , Wahjunie E D , Dasanto B D 
Published: January 2022

Abstract
Mojokerto Regency is one of the regencies in East Java with a high population growth rate of around 0.96%, thus encouraging significant land use changes on built-up areas. Classifying remote sensing imageries to obtain reliable and accurate land use and land cover (LULC) information remains a challenge that depends on many factors such as complexity of the landscape, the remote sensing data selected, image processing, and classification methods. This study examined the accuracy assessment of LULC classification using Google Earth in Sadar Watershed, Mojokerto, East Java Indonesia for the years 2010, 2015, and 2020. The land use was classified into five categories; those are agriculture land (paddy field, field, and plantation), non-agriculture land (forest land, bushland, grazing land), bare land, settlement land, and water bodies. Around 85 random points were generated in ArcGIS and verified with Google Earth. The results showed that the Overall Accuracy of LULCC for 2010 was 80.2% and Kappa Coefficient was 0.74; for 2015, the Overall Accuracy was 85.3% and Kappa Coefficient was 0.8, and for 2020, the Overall Accuracy was 84.0%, and Kappa Coefficient was 0.79. All accuracy is considered as good categorized and acceptable in both overall accuracy and Kappa Coefficient.
Assessing the paddy fields conversion using optical satellite imageries: A case study in Karawang Regency, West Java
Authors: Suliman S. , Setiawan Y. , Syartinilia  
Published: January 2022

Abstract
Paddy fields are the most crucial agricultural land-use in Indonesia that supporting national food security. Such lands have been experienced a massive change in their dynamics, specifically in rice production home, West Java. Karawang paddy fields notably become the major victim of land-use change along with rapid economic growth, development, and population pressure. This study aimed to assess paddy fields’ conversion dynamic and how land-use change contributes to this issue in Karawang. Remote sensing techniques and satellite images were used for investigation across the Karawang Regency. Three kinds of satellite image datasets of Landsat 5 TM, Landsat 8 OLI, and Sentinel 2 during the periods of 2009, 2014, and 2019 were analyzed. The results revealed that land-use change impacted paddy fields conversion significantly. Karawang regency lost 16346.77 ha or 8.54 % of its paddy fields throughout the study period. Such farmlands declined by 8639.84 ha (4.51%) and 7706.93 ha (4.02%) between 2009 -2014 and 2014 to 2019, respectively. The conversion of paddy fields to build areas, including road infrastructures, is approximately 14536.21 ha, representing 57.98% of the total paddy fields converted. It concluded that paddy fields had faced massive conversion over the last ten years driven by conversion into buildup areas due to the increased land demand, i.e., residential, commercial, and industrial activities.
Utilization of Synthetic Aperture Radar (SAR) Imagery to Identify Potential for Earthquake Disasters to Improve Disaster Preparedness
Authors: Utomo A M , Poniman A , Prihanto Y , Gultom R A G 
Published: January 2022

Abstract
Indonesia is located in three collision zones of the world’s three major plates, namely the Eurasian Plate, the Indo-Australian Plate, and the Pacific Plate. As a result of the plate collision, there were many earthquakes in Indonesia. One of the characteristics of the earthquake in this study is an active fault. Active faults are things that can cause earthquakes. The purpose of this literature review is to determine the differences in the accuracy of the Synthetic Aperture Radar (SAR) method with various types of satellites to identify earthquake characteristics. This literature review is limited by analysis of active faults on land using SAR imagery in the territory of Indonesia. Indonesia is located in the equator causes high cloud coverage throughout the year in Indonesian region. The advantages of this SAR image are that it can monitor the earth’s surface without weather disturbances, can penetrate clouds, and can be used during the day or night. The results of this literature review show that to identify the impact of earthquakes with high slip fault sources, medium resolution SAR images can be used (such as using Sentinel-1 imagery), and to identify the effect of earthquakes with low slip faults, high resolution can be used (such as using ALOS-2/PALSAR imagery). Knowing the impact of deformation due to earthquakes can be used to improve disaster preparedness, particularly those caused by earthquakes.
Annual Water Yield Analysis with InVEST Model in Tesso Nilo National Park, Riau Province
Authors: Ningrum A , Setiawan Y , Tarigan S D 
Published: January 2022

Abstract
One of the problems in Tesso Nilo National Park is deforestation through the opening of oil palm plantations. This can affect the ecosystem services of Tesso Nilo National Park, one of which is as a producer of water. Water yield is a key component of the attributes and processes that produce water-related ecosystem services. The importance of Tesso Nilo National Park ecosystem services as water producers needs to be assessed quantitatively and visualized to explain changes in land cover to changes in these services. The purpose of this study was to analyze the annual water yield in Tesso Nilo National Park. The model used is the Integrated Valuation of Environmental Services and Tradeoffs (InVEST) water yield model. InVEST is a spatially explicit tool for exploring how changes in ecosystems tend to lead to changes in benefits flowing to people. The annual water yield in Tesso Nilo National Park in 2018 was 5731528155.86 m3 or 2729.52 mm. Water yield is strongly influenced by actual evapotranspiration (AET), mean annual rainfall (MAP), and land cover (LC). The land cover that produced the lowest to the highest water yield was mixed acacia, forest, oil palm plantations, bare land and shrubs.
Spatial Pattern Changing Analysis of Built-up Due to The New Era of Aerotropolis in Kulon Progo, D.I. Yogyakarta
Authors: Litasari U C N , Widiatmaka  , Munibah K , Machfud  
Published: January 2022

Abstract
Built-up is artificial land use representing urban-oriented activities according to the sector developed in the aerotropolis, the development concept of city activity centered on the globally networked economy’s airport. The growth of unplanned built-up often caused environmental deterioration. Therefore, the impact of the emerging of a new growth center to the growth characteristic of the built-up requires to be analyzed. This research aimed to examine the growth and spatial distribution characteristics of built-up to mitigate the undesirable impact on the environment in the early phase of aerotropolis in Kulon Progo. The growth was analyzed using the spatial intersection of land use/land cover. The distribution orientation growth was carried out by weighted mean center and spatial standard deviational ellipse. The results demonstrate that annual growth of built-up increased from 55.35 ha per year in 2010-2015 to 69.83 ha per year in 2015-2020. Dryland agriculture was the most land use converted to built-up after aerotropolis era. The direction of built-up growth also shifted from northwest to southwest, and the distance between the airport and the mean center was getting closer. Therefore, land use planning policy need to refer to this pattern changing to preserve environmental sustainability while achieving economic growth.
Landscape Characteristics on Forest Health Measurement Plots in Several Forest Functions
Authors: Anwar P S , Safe’i R , Darmawan A 
Published: January 2022

Abstract
The assessment of tree damage aims to measure the level of tree damage so that the tree damage assessment can measure the level of disturbance to trees so that they can know the condition of the forest and know what happens in the future. This study aims to determine the landscape characteristics in the cluster of health measurement plots in three forest functions (production forest, conservation forest, and protection forest). The stand damage index for the cluster plots was collected, and perform spatial analysis, which included stand damage in the cluster plots based on landscape characteristics (road distance, slope, and elevation). The tendency of damage due to reach from the road tends to damage other stands. Significant damage occurred in conservation forest rather than protection forest and production forest with a percentage value of 98%. Slopes have a reasonably substantial damage effect-the higher the hill, the more damage to the stand. The gradient of 25-40% (steep) has a significant impact on protected forests with a percentage of 85%. Altitude does not matter much where low height causes considerable damage-substantial damage to production forests <500 masl.
Climate Suitability for Paddy in Sukabumi Regency by 2032 Using RCP 4.5 Scenario
Authors: Siska W , Widiatmaka  , Setiawan Y , Adi S H 
Published: January 2022

Abstract
Climate is the crucial determining component in defining the land suitability class for paddy. The paddy suitability class is expected to decrease as a result of global climate change. This study analyzed land suitability for paddy based on the Representative Concentration Pathways (RCP) 4.5 climate projection scenario of Sukabumi Regency in 2020 and 2032 using the Model for Interdisciplinary Research on Climate (MIROC) 5. The parameters analyzed were precipitation (pr), and near-surface air temperature (tas). The global data was adjusted to local conditions using a bias factor calculated using observed climate data from the Meteorological, Climatological, and Geophysical Agency Station in Bandung. Based on the results of this study, climate (precipitation and temperature) projections for Sukabumi Regency in 2020 and 2032 are classified as highly suitable (S1) for paddy cultivation. The result of this study indicates that there would be no change in the climate suitability class for paddy cultivation in Sukabumi Regency between 2020 to 2032. However, the results of this study also identified a significant numerical decline in precipitation. Therefore, we recommend necessary climate change mitigation and adaptation programs to reduce the future risk of decreasing rice production due to crop failure.
The impact of land-use changes and economic losses of paddy field conversion: a case study of Ciampea Sub-district, Bogor Regency, West Java Province
Authors: Fitri T Y , Adiwibowo S , Pravitasari A E 
Published: January 2022

Abstract
The study aims to analyze the land-use changes from paddy fields to non-paddy fields, examine the future sustainability of the paddy fields, and analyze the impact of the paddy fields’ conversion on the socio-economic and environmental aspects. The study was carried out at Ciampea Sub-district, Bogor Regency, West Java Province. Conversion of paddy fields was analyzed through visual interpretation of Ciampea Sub-district 2016 and 2019 imageries using GIS software of ArcGIS 10.5. and later was used to measure the average annual conversion rate and predict the future sustainability of the paddy field, and to measure the impact of the land conversion using the economic valuation method (financial analysis and replacement cost approach). The results showed that, first, during the year of 2016 to 2019, the paddy fields in Ciampea Sub-district transformations were dominated by settlements. Second, the conversion rate was relatively high, by 51.45 hectares per annum. Third, the impact of reduction of paddy field area was relatively high: a potential loss of 3,098.06 tons of food crop production. Meanwhile, the cost for replacing the function of flood, erosion, and sedimentation control reached IDR 257.68 billion.
Soil erosion prediction using GeoWEPP model in Cimanuk Hulu sub-watershed
Authors: Yusuf S M , Wijayanto A K , Sudrajat N F 
Published: January 2022

Abstract
Runoff, soil erosion, and sedimentation can be used to assess the watershed condition. GeoWEPP is one of the erosions predictions models that can be used to predict those parameters and also can be used as a tool to arrange watershed management. Cimanuk Hulu sub-watershed is one of the important watersheds in West Java Province, Indonesia, as its function for water resources for Jatigede reservoir. The condition of this sub-watershed is in poor condition because of the high rate of sedimentation in water body. Therefore, we use the GeoWEPP model to assess runoff, erosion, and sedimentation in the Cimanuk Hulu sub-watershed. The model is also used to arrange the watershed management scenario. The input data are climate data, soil characteristics, land cover management, channel characteristics, digital elevation model, soil and land cover map. Land cover types were classified using Google Earth Engine (GEE) with SmileCART algorithm. Soil samples, land cover management, and channel characteristics were collected from the field survey. The result showed that runoff value in the existing condition is classified as a high class that affected higher soil erosion and sediment yield compared to tolerable soil loss in the Cimanuk Hulu sub-watershed. Simulation of watershed management showed that scenario 3 is the best in reducing the runoff, erosion, and sedimentation in the Cimanuk Hulu sub-watershed.
Influence of the thickness of the roller discs of the combined machine on the indicators of their work during the processing of plowed lands afterwards
Authors: Igamberdiev A K , Muqimova D K , Usmanov E Z , Usmanova Sh D 
Published: January 2022

Abstract
Under the conditions of the Republic, when plowing the soil after harvesting winter wheat or re-crops, the upper layer containing plant residues and weeds is turned over and dumped into the lower layer, and as a result, voids and irregularities are formed in the arable layer. Proceeding from this, an industrial copy of the combined machine used in the preparation for planting of new plowed lands was developed in cooperation with Andijan agricultural and agrotechnologies, as well as Andijan machine-building institutes. The article presents the impact of the thickness of the discs of this combined machine disc rollers on the working performance of the device, and it is noted that the thickness of the combined machine rollers should be 22-25 mm in order to ensure quality processing at the required level, while consuming less energy on ploughed lands.
Mathematical models for predicting the level of potatoes nutrition from the soil chemical composition in the Northern Kazakhstan conditions
Authors: Abeuov S K , Shoykin O D , Kamkin V A 
Published: January 2022

Abstract
The authors of the article presented a visual technique for programming the yield of potato tubers by using mathematical models of the relationship with the chemical composition of the soil. The content of N-NO3 and P2O5 varied in the range of 14.7-35.0 mg/kg and 37.1-39.0 mg/kg of soil. The increase in the content of these nutrients was accompanied by an increase in the productivity of potato tubers from 1 ha. The results of the study showed that the yield value is closely related to the content of N-NO3 and P2O5 in the soil in the initial phase of crop growth. The verification of the calculation methods showed a forecast error by comparing the actual yield data with the predicted results. The established quantitative indicators with the help of mathematical communication models make it possible to diagnose the value of potato yield and normalize the effect of fertilizers.
The effect of the solid fraction of pig manure on the biological activity of agrochernozem
Authors: Azarenko Yu A , Alekseeva Zh L , Goman N V 
Published: January 2022

Abstract
The results of studies in 2016-2019 on the effect of the solid fraction of pig manure, applied at doses of 20-60 t/ha, on the indicators of the biological activity of the agrochernozem of loamy quasi-gley medium-arable medium with a low carbon content of organic matter (1.14-1.22%) are presented. The manure contained 0.59% of N, 1.13% of P2O5, 0.14% of K2O, 82.1% of organic matter at pH = 7.4. In field experiments carried out at the experimental field of the Omsk State Agrarian University (Omsk), the cellulose-destroying capacity of the soil and the activity of the enzymes catalase, urease and invertase were studied. The soil of the control variant had a weak cellulose-degrading capacity and was poor in the content of the studied enzymes. The results of the experiments indicate a positive effect of pig manure on the activity of biological processes in the soil. The cellulose-degrading capacity of agrochernozem depended on the dose of manure and the hydrothermal conditions of the growing season. In the period from the first to the third years of manure aftereffect, the intensity of cellulose destruction increased in comparison with the control by 20-90% at a dose of 20 t/ha and by 70-230% at a dose of 60 t/ha. Organic fertilization increased the activity of urease by 34.6-68.0%, by 10.7-14.6% that of catalase and by 5.8-12.2% that of invertase.
Effect of organic fertilizers on spring wheat grain yield
Authors: Bobrenko I , Goman N , Kormin V , Trubina N , Sklyarova M 
Published: January 2022

Abstract
The research is based on the study of the effect of solid organic fertilizers based on cattle manure of different storage life on the yield of spring wheat. The studies were carried out in 2017-2018 at RUSKOM-Agro LLC in Omsk Region. It was established that 3.1-7.2 kg of nitrogen, 2.1-7.2 kg of phosphorus and 2.1-3.5 kg of potassium are introduced from each ton of organic fertilizer. The most effective active dose is 60 t/ha (with a storage duration of 8 months) – the increase made 1.51 t/ha, with a yield in the control version – 2.04 t/ha. The best dose in the afterinfluence was 60 t/ha (with a storage duration of 10 months) – the increase made 1.24 t/ha, with a yield in the control version – 2.09 t/ha. The cost recovery of the applied fertilizer unit (1 ton of manure) was the highest using 40 t/ha per year in action and 20-60 t/ha in the afterinfluence with a storage duration of 12 months.