scholarly journals Analysis of Built-up Land Spatial Patterns Using Multitemporal Satellite Imagery in Pekalongan City

2020 ◽  
Vol 4 (2) ◽  
pp. 356-362
Author(s):  
Nurhadi Bashit ◽  
Yudo Prasetyo ◽  
Abdi Sukmono
Keyword(s):  
Spatial Patterns ◽  
Regional Growth ◽  
Toll Road ◽  
Central Java ◽  
Catchment Areas ◽  
Activity Center ◽  
Negative Impacts ◽  
Water Catchment ◽  
The City ◽  
Reduced Water

Regional growth is characterized by an increase in built-up land. An increase in built-up land can cause changes in land use such as vacant land turned into built-up land. One of the cities in Central Java that experienced an increase in built-up land was in the City of Pekalongan. Based on Pekalongan City Regulation Number 30 Year 2011, the National Spatial Planning stipulates that Pekalongan City is the Regional Activity Center. This causes the Pekalongan City to have the potential to increase the amount of built-up land. An increase in uncontrolled built-up land can cause negative impacts such as reduced water catchment areas so that the disruption of water resources conditions. Therefore, it is necessary to monitor the increase of built-up land in Pekalongan City and see its development spatial patterns. One of method for monitoring a city's built-up land uses the remote sensing method. This study uses an Index-based Built-up Index (IBI) algorithm. Based on the results of this study, it can be concluded that the city of Pekalongan experienced an increase in built-up land between 2013 and 2019. The largest increase in built-up land is in the range of 2017 to 2019 with an area of increase of 359.088 ha so that it can be obtained the speed of increase of built-up land by 170.544 ha/year. The spatial pattern of built-up land increased in 2017 to 2019 heading south because South Pekalongan Regency has a toll road that connects the main road with the toll road.

scholarly journals Laju Infiltrasi Lubang Resapan Biopori (LRB) Berdasarkan Jenis Bahan Organik Sebagai Upaya Konservasi Air dan Tanah

2017 ◽  
Vol 2 (1) ◽  
pp. 320-330
Author(s):  
Seva Darwia ◽  
Ichwana Ichwana ◽  
Mustafril Mustafril
Keyword(s):  
Infiltration Rate ◽  
Rain Water ◽  
The Public ◽  
Conversion Experience ◽  
Catchment Areas ◽  
Rate Of Absorption ◽  
Water Catchment ◽  
Reduced Water ◽  
Banda Aceh ◽  
Central Economic

Abstrak. Kota Banda Aceh menjadi daya tarik bagi masyarakat sebagai sentral kegiatan pendidikan dan ekonomi, sehingga membawa pengaruh bertambahnya jumlah penduduk yang menyebabkan kebutuhan lahan semakin meningkat. Lahan yang sebelumnya berfungsi sebagai daerah resapan air tersebut mengalami konversi lahan yang menyebabkan berkurangnya daerah resapan air sehingga ketika terjadinya hujan dengan intensitas tinggi air hujan tidak secara maksimal terinfiltrasi ke dalam tanah dan terjadi penggenangan. Maka, diperlukan upaya untuk meresapkan air hujan yang efektif  ke dalam tanah dengan menggunakan lubang resapan biopori. Salah satu tempat yang ingin diketahui besarnya laju infiltrasi menggunakan lubang resapan biopori adalah di lima halaman rumah dengan luas bidang kedap yang berbeda. Penelitian ini bertujuan untuk mengetahui jumlah lubang biopori yang dibutuhkan di setiap rumah serta mengetahui jumlah volume air yang terinfiltrasi. Jumlah volume air yang terinfiltrasi pada rumah A yaitu 2,88 ml, pada rumah B yaitu 6,12 ml, pada rumah C yaitu 10,24 ml, pada rumah D yaitu 4,26 ml, pada rumah E yaitu 2,17 ml selama pengukuran. Jumlah ideal LRB yang dibutuhkan pada setiap halaman rumah A, B, C, D dan E berturut-turut adalah 82, 51, 27, 71, dan 230 lubang dengan intensitas hujan sebesar 6,62 cm/jam. Infiltration Rate of Absorption Holes Biopore Based on Type of Organic Material as Water and Soil Conservation Efforts Abstract.  Banda Aceh appeal to the public as the central economic and educational activities, this bringing the influence of growing population and increasing land needs. Increasing population it brings increased land requirements. Previous land serves as the water catchment area of land conversion experience leading to reduced water catchment areas. So, when it rains with high intensity of rain water, is not optimally infiltrated into the soil and flooding occurred. We need efforts are needed to effectively absorb rain water into the ground. One of the places to know the magnitude of infiltration using biopori absorption holes are in five broad areas of the home page with different impermeable. This study aims to determine the amount of absorption wells which are needed in every houses and to know the volume of water that infiltrated. The total volume of water that infiltrated the house of A is 2.88 ml, at the house of B is 6.12 ml, at the house of C is 10.24 ml, at the house of D is 4.26 ml, at the house of E is 2.17 ml for measurement. LRB ideal amount needed at every driveway A, B, C, D and E are respectively is 82, 51, 27, 71, 230 holes with rain intensity of 6.62 cm / hour. 

scholarly journals Accuracy of The Level of Critical Water Catchment Area for Flood Mitigation Around Bengkulu City, Indonesia

2021 ◽  
Vol 53 (2) ◽  
Author(s):  
Bambang Sulistyo ◽  
Hery Suhartoyo ◽  
Teguh Adiprasetyo ◽  
Kanang Setyo Hindarto ◽  
Noviyanti Listyaningrum
Keyword(s):  
Catchment Area ◽  
Flood Mitigation ◽  
Disaster Mitigation ◽  
Threshold Values ◽  
Reasonable Accuracy ◽  
Water Catchment Area ◽  
Catchment Areas ◽  
Flooded Area ◽  
Water Catchment ◽  
The City

Disaster mitigation activities require the availability of a potentially flooded area (PFA) map. One of the causes of flooding is the criticality of water catchment areas; the higher the criticality level, the higher the flooding potential. This study aims to determine the accuracy of the model for determining the PFA around Bengkulu City, which was derived from the Level of Critical Water Catchment Area (LCWCA) model developed by the Ministry of Forestry. After obtaining the LCWCA Map, another analysis was performed in order to obtain the PFA Map. Furthermore, the overlaying was carried out with the Existing Flood Map in such a way that the level of accuracy is known. The threshold values from Justice are used to justify the level of accuracy in three categories, namely Good (> 85%), Moderate (70 - 85%), and Poor (<70%). The results showed that in the eight sub-watersheds around the city of Bengkulu, there were two sub-watersheds with reasonable accuracy (> 85%), which means that there was > 85% overlap between areas on the Potentially Flooded Area Map as a result of the analysis of The LCWCA with the area on the Existing Flood Map. There are three sub-watersheds with Moderate accuracy (70 - 85%) and three sub-watersheds with Poor accuracy (<70%)

scholarly journals Socioeconomy Conditions After The Development of Toll Roads in Salatiga

2021 ◽  
Vol 10 (1) ◽  
pp. 86-95
Author(s):  
Grace Natalia Marpaung ◽  
Etty Soesilowati ◽  
Yozi Aulia Rahman ◽  
Yustiko Arvan Gilang Pangestu ◽  
Tania Wicaksana
Keyword(s):  
Small And Medium Enterprises ◽  
Road Construction ◽  
Regional Economic Growth ◽  
Toll Roads ◽  
Socioeconomic Condition ◽  
Qualitative And Quantitative ◽  
Toll Road ◽  
Central Java ◽  
Negative Impacts ◽  
Medium Enterprises

In Central Java, one of supporting factors of regional economic growth viewed from regionalfacilities and infrastructures is toll road facilities. Transjawa toll road is a network that connectsseveral cities in Java. Particularly, this toll road connects two biggest cities in Indonesia, namelyJakarta and Surabaya in which Salatiga is also one of cities traversed by this toll. This ±1.000 kmtoll road continues the previous toll roads that have existed, including Merak – Cikampek, Jakarta– Bandung, Semarang – Bawen, and Surabaya – Pandaan. Despite the positive impacts, Transjawatoll road also gives negative impacts for local communities. Thus, this study aimed (1) to find outthe socioeconomic condition of farmers after Transjawa toll road construction in Salatiga and (2)to find out the socioeconomic condition of Micro, Small, and Medium Enterprises (MSMEs) afterTransjawa toll road construction in Salatiga. This study used qualitative and quantitative datataken from from 30 main respondents. The construction of transjawa toll road in Salatiga regionbrings good effects. It was proved by the better condition of socioeconomic and income of farmersand MSME doers in Salatiga region after the construction of this toll road.

scholarly journals Effect of Addition Polypropylene Fiber on Compressive Strength and Permeability Values in Porous Concrete

2021 ◽  
Vol 27 (1) ◽  
pp. 135-142
Author(s):  
Wira Rante Paganggi ◽  
Amelia Makmur ◽  
Rachmansyah Rachmansyah
Keyword(s):  
Compressive Strength ◽  
Polypropylene Fiber ◽  
Polypropylene Fibers ◽  
Chemical Additives ◽  
Chemical Additive ◽  
Porous Concrete ◽  
Concrete Mixtures ◽  
Catchment Areas ◽  
Water Catchment ◽  
Reduced Water

The infrastructure growth has an impact on reducing green areas, which will be followed by reduced water catchment areas. Porous concrete is one of the porous materials that can be used on a pedestrian walk, which is able to drain water. The porous concrete has a limitation strength. This research aims to determine the effect of using various content of chemical additive and polypropylene fibers for porous concrete mixtures related to the compressive strength and permeability values. This experimental method referring to ACI 522R-10 Standard. That specimens using chemical additives and variations of polypropylene fibers: 0.05%, 0.1%, 0.15%, 0.2%, and 0.25% by weight of cement. The results showed that the specimen which had the highest compressive strength was 16.9 MPa, which was added 0.25% polypropylene fiber. The addition of polypropylene fibers increases the compressive strength value by 5.6%. Based on the compressive strength and permeability graphs, it can be estimated that the optimal content of polypropylene fiber is 0.17% by weight of cement.

scholarly journals Perubahan Penggunaan Lahan Terhadap Banjir di Kawasan Daerah Aliran Sungai Maros

2021 ◽  
Vol 3 (2) ◽  
pp. 52-59
Author(s):  
Ridwan Latief ◽  
Roland A. Barkey ◽  
Muh. Iqbal Suhaeb
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Urban Area ◽  
Linear Regression Analysis ◽  
Analysis Method ◽  
Watershed Area ◽  
Catchment Areas ◽  
Map Analysis ◽  
Water Catchment ◽  
Reduced Water

Kawasan perkotaan di Kabupaten Maros dilalui oleh Sungai Maros. Aliran Sungai Maros mengalir menuju Selat Makassar dan merupakan muara bagi sungai-sungai lain di bagian hulu. Sungai Maros yang melalui kawasan perkotaan memiliki daerah aliran sungai yang sangat rentan untuk dialihfungsikan. Pertumbuhan alih fungsi lahan non terbangun menjadi terbangun secara fakta marak terjadi pada kawasan daerah aliran sungai Maros. Kawasan daerah aliran sungai yang terbanguni berpotensi menyebabkan gangguan ekologis dan hidrologis yang berdampak pada terjadinya banjir karena berkurangnya lahan resapan air serta berubahnya morfologi daerah aliran sungai. Tujuan pertama penelitan ini adalah mengetahui kondisi penggunaan lahan terbangun serta perubahannya dalam kurung waktu 5 tahun terakhir di kawasan Daerah Aliran Sungai Maros menggunakan metode analisi tumpang tindih peta. Tujuan kedua adalah mengkaji pengaruh perubahan penggunaan lahan terbangun terhadap banjir di kawasan Daerah Aliran Sungai Maros dengan menggunakan analisis regresi linear sederhana. Variabel prediktor yang digunakan yaitu perubahan penggunaan lahan (X), dengan variabel kriterium adalah luas banjir (Y). Hasil penelitian menunjukkan bahwa perubahan penggunaan lahan terbangun pada kawasan daerah aliran sungai Maros mengalami peningkatan yang cukup tinggi, dimana lahan kebun yang berubah menjadi permukiman sebesar 18,4 ha. Sedangkan sawah yang berubah menjadi permukiman sebesar 3,68 ha dari tahun 2015 ke tahun 2019. Perubahan penggunaan lahan terbangun yang terjadi berpengaruh kuat dan signifikan terhadap peningkatan luas genangan banjir pada kawasan daerah aliran sungai Maros. The urban area in Maros Regency is traversed by the Maros River. Maros River flows towards Makassar Strait and is the mouth of other rivers in upstream. Maros River which passes through the urban area has a watershed river that is vulnerable to conversion. The growth of conversion of non-built land into built-up areas in fact is rife in Watershed Maros. Developed watershed areas have the potential to cause ecological and hydrological disturbances that have an impact on flooding due to reduced water catchment areas and changing morphology of river basins. The first objective of this research is to determine the conditions of built-up areas and changes within the last 5 years in the Watershed Maros using overlapping map analysis method. The second purpose is to examine the effect of changes in built-up land use on flooding in Maros watershed area using simple linear regression analysis. The predictor variables used are land use change (X), with the criterion variable is the flood area (Y). The results showed that the land use change was built on the watershed area of Maros has increased quite highly, where 18.4 ha of land has been converted into a settlement. While the rice fields are changed to a settlement of 3.68 ha from 2015 to 2019. Changes on the use of built-up land that occurs have a strong and significant effect on increasing the area of  flood inundation in the watershed area of Maros

scholarly journals Total Alkaline Phosphatase Activity in Water of Rusalka Lake in the City of Szczecin

2013 ◽  
Vol 12 ◽  
pp. 60-66
Author(s):  
Piotr Daniszewski
Keyword(s):  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Total Alkaline Phosphatase ◽  
Total Alkaline Phosphatase Activity ◽  
Level Of Activity ◽  
Catchment Areas ◽  
Water Catchment ◽  
The City ◽  
Total Alkaline

The progress of civilizations causes changes in the water catchment areas lakes; aquatic waters are order - phosphorus and nitrogen compounds. Level of activity alkaline phosphatase (APA) has an important impact on the chemical and biological processes taking place in the aquatic environment. APA belongs to a group of indicators, who tells us about the extent limitations to development of biomass in the tank water. Water of Rusalka lake were the subjects of 2008-2012 (July – September). Total alkaline phosphatase activity was determined seven times a year in these environments. A study of seasonal fluctuations showed that a maximum total alkaline phosphatase activity, both in the water and in the bottom sediment, occurred in spring (May) and summer (July, August).

scholarly journals ANALISA METODE DATA MINING PADA PRODUKSI PERIKANAN LAUT YANG DIJUAL DI TEMPAT PERIKANAN IKAN (TPI)

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Hanifah Urbach Sari ◽  
Agus Perdana Windarto ◽  
Dedy Hartama
Keyword(s):  
West Kalimantan ◽  
Central Java ◽  
North Sulawesi ◽  
South Sulawesi ◽  
Catchment Areas ◽  
West Sumatra ◽  
The Government ◽  
High Level ◽  
Water Catchment ◽  
North Sumatra

The purpose of this research is that the results of the utilization of fish resources in producing marine fisheries by fishermen can be good using the K-Means clustring method. Data was obtained from the Central Statistics Agency (BPS) and assisted using RapidMiner software. Data used from 2013-2017 consisted of 21 Provinces. With these data can be obtained data with high-level clusters (C1), namely Central Java with production 587002.8 and low-level clusters (C2) provinces of Aceh, North Sumatra, West Sumatra, Bengkulu, Lampung, Bangka Belitung Islands, DKI Jakarta, West Java , DI Yogyakarta, East Java, Banten, Bali, West Nusa Tenggara, West Kalimantan, Central Kalimantan, North Sulawesi, Central Sulawesi, South Sulawesi, Southeast Sulawesi and Gorontalo with a production of 20302.28. This can be input to the government for provinces that have low water catchment areas to be of more concern based on the cluster that has been done.Keywords: K-Means, Sea Fish Production, Clustering, Territory

scholarly journals POLA PERKEMBANGAN RUANG DI KABUPATEN SEMARANG DENGAN MEMANFAATKAN DATA CITRA LANDSAT

2017 ◽  
Vol 5 (1) ◽  
pp. 58
Author(s):  
Pangi Pangi ◽  
Muharar Ramadhan ◽  
Khristiana Dwi Astuti ◽  
Intan Muning Harjanti ◽  
Reny Yesiana
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Urban Growth ◽  
Landsat Images ◽  
Toll Road ◽  
Remote Sensing Technology ◽  
Central Java ◽  
Sensing Technology ◽  
Controlling Mechanism ◽  
The City

The development of the city is influenced by the growth on the physical, economic, and social activities in the city. In the case of Semarang Regency, this development is included in the category fairly fast, particularly after the opening of toll road Semarang-Bawen. By utilizing remote sensing technology and satellite imagery, the pattern of these developments can be mapped and analyzed. The purpose of this study was to identify the pattern of development of space in Semarang Regency by using multitemporal Landsat images. The application of these images can be a mean of monitoring and controlling mechanism of the urban growth in the fast growing city in Central Java, such as in Semarang Regency. Hence, the focus of this analysis is on data of built up area. During the period of 43 years (1972 - 2015) land use change that occurred in the district of Semarang had increased for about 13,000 Ha or an average of 300 ha/year. The biggest changes are located in the Tengaran, Susukan and Bergas sub district that grow more than 20 ha / year. 

scholarly journals Bantuan Bibit Tanaman Untuk Membantu Meningkatkan Kualitas Lingkungan Di Kelurahan Bambu Kuning Kecamatan Tenayan Raya Kota Pekanbaru

2019 ◽  
Vol 3 ◽  
Author(s):  
Rini Nizar ◽  
Latifa Siswati ◽  
Dedi Zargustin
Keyword(s):  
High School ◽  
Forest Fires ◽  
Urban Areas ◽  
Human Life ◽  
Vocational High School ◽  
Youth Groups ◽  
Protected Forests ◽  
Catchment Areas ◽  
Water Catchment ◽  
Reduced Water

urban areas in general shows an increase in population growth and buildings which results in reduced water catchment areas that can cause flooding during the rainy season and also poor air quality that can be generated from forest fires from the surrounding area.  This also happened in the Bambu Kuning Village.   the team offered to increase youth awareness by providing knowledge about the importance of the environment for human life and with that knowledge young people could implement it into an action or movement. The Lecturer Team cooperates with the Center for Management of Watersheds and Protected Forests in the procurement of seeds. The seeds given are Soursop, Matoa, Mahoni, Pulai, Gaharu and Ketapang Kencana. the implementation of seed assistance not only distributed to Youth Groups RW 09, only Bambu Kuning Village, but there were requests for seeds from other parties. Other parties are: residents in RW 013 East Sidomulyo Village Marpoyan Damai Subdistrict, Agricultural Vocational High School, 6th High School, Zamrad Kindergarten, 8th Vocational School, Nature Unilak Student Student Group and Unilak BEM Student Organization. An interesting finding in the field is the desire of the  Senior High School  Negeri 8 in Palas  to make cooperation for lecturers to do  PKM in their schools for students in the school who need to be followed up. Keywords:   Greening, Seed Aid, Planting     Abstrak   Di daerah perkotaan pada umumnya menunjukkan adanya peningkatan pertumbuhan penduduk dan bangunan yang mengakibatkan berkurangnya daerah resapan air yang dapat menimbulkan banjir pada musim hujan dan juga kualitas udara yang kurang baik yang bisa ditimbulkan dari kebakaran hutan dari daerah disekitarnya. Hal ini juga terjadi di Kelurahan Bambu Kuning, untuk itu tim menawarkan untuk meningkatkan kepedulian pemuda dengan memberikan pengetahuan tentang pentingnya lingkungan hidup bagi kehidupan manusia dan dengan pengetahuan tersebut pemuda dapat mengimplementasikannya kedalam suatu tindakan atau gerakan. Tim Pengabdian Dosen bekerjasama dengan Balai Pengelolaan Daerah Aliran Sungai dan Hutan Lindung dalam pengadaan bibit. Bibit yang diberikan adalah bibit Sirsak, Matoa, Mahoni, Pulai, Gaharu dan Ketapang Kencana.  Dalam pelaksanaan bantuan bibit tidak saja didistribusikan ke Kelompok Pemuda RW 09 Kelurahan Bambu Kuning saja, tetapi ada permintaan bibit dari pihak lainnya.  Pihak lain tersebut adalah: warga di RW 013 Kelurahan Sidomulyo Timur Kecamatan Marpoyan Damai, SMK Pertanian, SMA N 6 , TK Zamrad, SMK N 8, Kelompok Mahasiswa Pencinta Alam Unilak dan  Organisasi Mahasiswa BEM Unilak. Temuan yang menarik di lapangan adalah adanya keinginan dari SMA N 8 Kelurahan Palas untuk membuat kerjasama bagi dosen untuk melakukan pengabdian di sekolahnya untuk siswa-siswa di sekolah tersebut yang perlu untuk ditindak lanjuti. .   Kata kunci : Penghijauan, Bantuan Bibit, Penanaman  

scholarly journals Total Alkaline Phosphatase Activity in Water of Szmaragdowe Lake in the City of Szczecin in Poland

2013 ◽  
Vol 13 ◽  
pp. 87-93
Author(s):  
Piotr Daniszewski
Keyword(s):  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Total Alkaline Phosphatase ◽  
Total Alkaline Phosphatase Activity ◽  
Level Of Activity ◽  
Catchment Areas ◽  
Water Catchment ◽  
The City ◽  
Total Alkaline

The progress of civilisations causes changes in the water catchment areas lakes; aquatic waters are order - phosphorus and nitrogen compounds. Level of activity alkaline phosphatase (APA) has an important impact on the chemical and biological processes taking place in the aquatic environment. APA belongs to a group of indicators, who tells us about the extent limitations to development of biomass in the tank water. Water of Szmaragdowe lake were the subjects of 2008-2012 (July – September). Total alkaline phosphatase activity was determined seven times a year in these environments. A study of seasonal fluctuations showed that a maximum total alkaline phosphataseactivity, both in the water and in the bottom sediment, occurred in spring (May) and summer (July, August). The results presented in in tables 1 to 5 demonstrate that total alkaline phosphatase activity in the waters of Szmaragdowe lake over the five-year period of study oscillated between 242,3 to 642,1 nmol PO4·dm–3·h–1. The oscillation range in both zones of the analyzed water body was similar. In the littoral it ranged from 312,3 to 642,1 nmol PO4·dm–3·h–1, and in sublittoral from 242,3 to 536,9 nmol PO4·dm–3·h–1.

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