scholarly journals Analisis Koefisien Aliran Permukaan dengan Menggunakan Metode Bransby-Williams Di Sub Daerah Aliran Sungai Babura Provinsi Sumatera Utara

2017 ◽  
Vol 9 (2) ◽  
pp. 158
Author(s):  
Anik Juli Dwi Astuti ◽  
Eni Yuniastuti ◽  
Dwi Wahyuni Nurwihastuti ◽  
Retno Triastuti
Keyword(s):  
Land Use ◽  
Spatial Analysis ◽  
Key Words ◽  
River Basin ◽  
Soil Texture ◽  
Survey Methods ◽  
Good Condition ◽  
Research Data ◽  
Runoff Coefficient ◽  
Field Surveys

Abstrak Daerah penelitian adalah sub Daerah Aliran Sungai Babura yang mempunyai luas 4921,88 Ha. Tujuan dari penelitian ini adalah 1) menganalisis besarnya koefisien aliran permukaan menggunakan metode Bransby-William di Sub Daerah Aliran Sungai Babura, 2) menganalisis distribusi nilai koefisien aliran di Sub Daerah Sungai Babura. Teknik pengumpulan data pada penelitian ini menggunakan metode survey baik survey instansional maupun lapangan. Survei instansional digunakan untuk memperoleh data curah hujan dan penutup lahan sedangkan survey lapangan digunakan untuk mendapatkan data tekstur tanah dan kemiringan lereng. Selanjutnya hasil dianalisis dengan menggunakan analsis deskriptif dan spasial. Hasil penelitian menunjukkan bahwa koefisien aliran di Sub Daerah Aliran Sungai Babura berkisar 0,4 – 0,55 dengan rata-rata 0,475. Dengan mendasarkan pada nilai koefisien aliran tersebut dapat dikatakan bahwa sub DAS Babura masih dalam kondisi baik. Besarnya koefisien aliran di SubDAS Babura bervariasi dimana pada daerah hulu nilai koefisien aliran permukaan berkisar antara 0,4 – 0,45 sedangkan di daerah hilir sungai pada kisaran nilai 0,5 – 0,55. Kata kunci : koefisien aliran, Bransby-William, sub Daerah Aliran Sungai, Babura Abstract The research located in Babura watershed which has wide of 4921.88 Ha. The purposes of this research are 1) to analyze runoff coefficient using Bransby-Williams method, 2) to analyze the distribution of runoff coefficient in Babura river basin. In this research, data were collected using survey methods both the institutional and field surveys. Institutional surveys were used to obtain rainfall and land use data meanwhile field surveys were used to gain soil texture data and slope. The results of this study were analyzed using descriptive and spatial analysis. The results showed that the runoff coefficient in the Babura watershed was from 0.4 to 0.55 with an average of 0.475. This means that the Babura watershed is still in good condition. Furthermore, runoff coefficient in upstream was 0.4 – 0.45 while in downstream the runoff coefficient was 0.5 – 0.55. Key words: runoff coefficient, Bransby-Williams, Watershed, Babura

scholarly journals Land Use Evaluation over the Jema Watershed, in the Upper Blue Nile River Basin, Northwestern Highlands of Ethiopia

Land ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 50 ◽  
Author(s):  
Mintesinot Taye ◽  
Belay Simane ◽  
Benjamin F. Zaitchik ◽  
Yihenew G. Selassie ◽  
Shimelis Setegn
Keyword(s):  
Land Use ◽  
River Basin ◽  
Soil Texture ◽  
Arable Land ◽  
Nile River ◽  
Cultivated Land ◽  
Land Capability ◽  
Annual Crop ◽  
Crop Land ◽  
Blue Nile River Basin

Generating land capability class guidelines at a watershed scale has become a priority in sustainable agricultural land use. This study analyzed the area of cultivated land use situated on the non-arable land-capability class in the Jema watershed in the Upper Blue Nile River Basin. Soil surveys, meteorological ground observations, a digital elevation model (DEM) at 30 m, Meteosat at 10 km × 10 km and Landsat at 30 m were used to generate the sample soil texture class, average annual total rainfall (ATRF in mm), terrain, slope (%), elevation (m a.s.l) and land-use land cover (%). The land capability class was analyzed by considering raster layers of terrain, the average ATRF and soil texture. Geo-statistics was employed to fit a surface of soil texture and average ATRF estimates. An overlay technique was used to compute the proportion of cultivated land placed on non-arable land. As per the results of the terrain analysis, the elevation (m a.s.l) of the watershed is in the range of 1895 to 3518 m. The slope was found to be in the range of 0 to 45%. The amount of estimated rainfall ranged from 1640 to 131 mm with value declined from the lower to the higher elevation. Clay loam, clay and heavy clay were found to be the major soil texture classes. Four land capability classes, i.e., II, III, IV (arable) and V (non-arable), were identified with proportions of 28.56%, 45.74%, 22.16% and 3.54%, respectively. Seven land-use land covers were identified, i.e., annual crop land, grazing land, bush land, bare land, settlement land, forestland and water bodies, with proportions of 42.1, 35.9, 8.90, 8.3, 2.6, 2.1, and 0.2, respectively. Around 1707.7 ha of land in the watershed is categorized under non-arable land that cannot be used for annual crop cultivation at any level of intensity. Around 437 ha (3.5%) of land was cultivated on non-arable land. To conclude, the observed unsustainable crop land use could maximize soil loss in upstream regions and siltation and flooding downstream. The annual crop land use that was observed on non-arable land needs to be replaced with perennial crops, pasture and/or forest land uses.

scholarly journals Spatial Analysis of Land Use and Land Cover Changes in Recent 30 Years in Manas River Basin

2012 ◽  
Vol 12 ◽  
pp. 906-916 ◽  
Author(s):  
Zhang Qingqing ◽  
Xu Hailiang ◽  
Fu Jingyi ◽  
Yu Pujia ◽  
Zhang Peng
Keyword(s):  
Land Use ◽  
Spatial Analysis ◽  
Land Cover ◽  
River Basin ◽  
Land Cover Changes ◽  
Manas River Basin

scholarly journals Evaluation of human pressure on the Rata river-basin system

2014 ◽  
pp. 164-170
Author(s):  
Liudmyla Kurhanevych ◽  
Lilianna Verbenets
Keyword(s):  
Land Use ◽  
Environmental Stress ◽  
Key Words ◽  
River Basin ◽  
Environmental Sustainability ◽  
Anthropogenic Impact ◽  
Anthropogenic Load ◽  
Environmental Research ◽  
Human Pressure ◽  
Basin System

The urgency of geo-environmental research of river systems status through the analysis of anthropogenic load on their pools has been substantiated. The main approaches to the assessment of anthropogenic impact on the river basin system and the structure of land use have been analyzed, the degree of environmental sustainability of landscapes, ecological balance area environmental sustainability of land use, and environmental stress within the Rata basin have been assessed. Key words: river-basin system, human pressure, land use and environmental sustainability

scholarly journals ANALISIS HUBUNGAN ANTARA KEPUASAN KERJA DAN MOTIVASI BERPRESTASI TERHADAP KINERJA KARYAWAN SURVEI DI KOPERASI BEN MAKMUR, MUARA TAWAR, BEKASI

2017 ◽  
Vol 8 (2) ◽  
Author(s):  
Haryadi Haryadi
Keyword(s):  
Job Satisfaction ◽  
Key Words ◽  
Random Sampling ◽  
Survey Methods ◽  
Simple Random Sampling ◽  
Research Data ◽  
Working Environment ◽  
Stratified Random Sampling ◽  
To Receive ◽  
The Relationship

<p><em>The purpose of this study was to find out whether there is a relationship and how strong the relationship between job satisfaction and achievers motivation. This study uses survey methods, sampling research was carried out by means of a stratified random sampling. From a population of 126 people were chosen as much as 120 people as respondents, in accordance with the Slovin formula; with details of 32 people involved to test the instrument, while the remaining research 88 people as samples in the collection of research data, selected by simple random sampling. </em></p><p><em>Based on the conclusion of the research results can be said that employees performance can be enhanced through efforts to increase job satisfaction and increased achievers motivation. Increased job satisfaction can be done with decent wages policy, any chance of promotion as a fair, equitable and tranparent, congruency between tasks and interests of workers and there are awards to workers who are achievers.Increase the achievers motivation can be done with any hope of a better future, there is justice in the working environment, there is a sense like accept responsibility, there is a sense of love to receive feedback and orientation on the achievement of goals. </em></p><p><em>In this study only examined the limited influence of the job satisfaction and achievers motivation for the employees performance.</em></p><p>Key Words- J<em>ob satisfaction, achievers motivation and employees performance.</em></p>

scholarly journals ANÁLISE DAS CARACTERÍSTICAS HIDROLÓGICAS DE TRÊS SUB-BACIAS DO RIO CARAPÁ (CANINDEYÚ, PARAGUAI) EM FUNÇÃO DAS MUDANÇAS DA COBERTURA VEGETAL

FLORESTA ◽  
2011 ◽  
Vol 41 (2) ◽  
Author(s):  
César Daniel Riveros Reys ◽  
Nivaldo Eduardo Rizzi ◽  
Hideo Araki
Keyword(s):  
Land Use ◽  
River Basin ◽  
Forest Cover ◽  
Plant Cover ◽  
Curve Number ◽  
Response Analysis ◽  
Runoff Coefficient ◽  
Antecedent Moisture ◽  
History Of ◽  
Multitemporal Analysis

O objetivo deste trabalho foi analisar o comportamento hidrológico em três sub-bacias da bacia hidrográfica do rio Carapá, localizadas no Departamento de Canindeyú, Paraguai em 1985, 1999 e 2007, através de análise multitemporal do uso do solo e análise da resposta hidrológica pelo método de Curva Número com ênfase no parâmetro de Coeficiente de escoamento superficial (CE). A metodologia de estudo foi dividida em duas etapas: classificação dos usos do solo e análise das mudanças da vegetação nativa e análise das classes geradas com adição de tipologias de solos para gerar os parâmetros hidrológicos nas três condições de umidade antecedente: normal (NII), seco (NI) e próximo da saturação (NIII). Os resultados indicaram diminuição da cobertura florestal nas três sub-bacias. Das três, o coeficiente de escoamento superficial nas três situações de umidade antecedente da sub-bacia 49 no período de 1985 e 1999 foi a mais alta (NI=6,42; NII=30,88; NIII=57,86) e a que indica maior possibilidade de degradação. No período de 2007, o coeficiente de escoamento superficial nas três situações de umidade antecedente da sub-bacia 01 foi a mais alta (NI=17,03; NII=45,18; NIII=69,32), indicando maior possibilidade de degradação na sub-bacia por conta da ação da erosão hídrica.Palavras-chave: Bacia hidrográfica; análise multitemporal; curva número; escoamento superficial. AbstractAnalysis of hydrologic characteristics of three sub-basins of Carapa River basin (Canindeyú, Paraguay) in relation to changes of plant cover. The objective of this study was to analyze the hydrological behavior in three sub-basins of the river basin, Carapa, located in the Department of Canindeyú, Paraguay in 1985, 1999 and 2007 through multitemporal analysis of land use and hydrologic response analysis method Curve Number with emphasis on parameter runoff coefficient (EC). The methodology was divided into two steps: classification of land use and analysis of changes in vegetation and analysis of the generated classes with the addition of soil types to generate the hydrological parameters in the three antecedent moisture conditions: normal (NII) cleaning (NI) and close to saturation (NIII). The results showed decrease in forest cover in the three sub-basins. From the three parameters, the runoff coefficient in three different moisture history of the sub-basin 49 between 1985 and 1999 was the highest (NI = 6.42, NII = 30.88, NIII = 57.86) and indicates a higher possibility of degradation. During 2007, the runoff coefficient in three different moisture history of the sub-basin 01 was the highest (NI = 17.03, NII = 45.18, NIII = 69.32), indicating a greater possibility of degradation the sub-basin due to the action of water erosion.Keywords: Hydrographic basin; multitemporal analysis; curve number; runoff. 

scholarly journals Sebaran Spasial Eceng Gondok (Echornia Crassipes) di Danau Tondano

2020 ◽  
Vol 1 (3) ◽  
pp. 32
Author(s):  
Agnes Tenly Moningkey ◽  
Anatje Lihiang ◽  
Mercy M. F. Rampengan
Keyword(s):  
Land Use ◽  
Spatial Analysis ◽  
Distribution Pattern ◽  
Water Hyacinth ◽  
Growth And Development ◽  
Research Method ◽  
Secondary Data ◽  
Field Surveys ◽  
Community Activities ◽  
Water Hyacinths

The growth of water hyacinth in the waters of Lake Tondano can affect the lake's ecosystem due to its rapid growth and spread. Water hyacinth is a weed that damages the aquatic environment which, if its growth and development are not controlled, will reduce the amount of light entering the waters, evapotranspiration, and reduce the amount of water and can accelerate the process of silting the waters of Lake Tondano. The research objective was to determine the distribution pattern of water hyacinth in Lake Tondano from 2015 to 2020. The research method was descriptive qualitative and spatially analyzed data using geographic information systems. The data used are primary and secondary data, obtained through observation and field surveys and documentation. Based on the results of spatial analysis, it is known that the distribution pattern of water hyacinth in Lake Tondano has increased from 2015 with an area of 465.59 Ha, in 2016 the area was 848 Ha, in 2017 the area was 999,695 and there was a change in area decline, in 2018 the area was 675.87 Ha, and 2019 the area was 366.36 Ha. , and in 2020 the area of water hyacinth will increase to 995,797 hectares. The factors causing the uncontrolled distribution of water hyacinth in the waters of Lake Tondano can be due to the season (climate), sedimentation, or land use. The growth and development of water hyacinths have disrupted various community activities and have an impact on the process of silting the waters of the lake and damaging the beauty of Lake Tondano.

scholarly journals Study on the Impact of Land-Use Change on Runoff Variation Trend in Luojiang River Basin, China

Water ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3282
Author(s):  
Ji He ◽  
Yu-Rong Wan ◽  
Hai-Tao Chen ◽  
Wen-Chuan Wang
Keyword(s):  
Land Use ◽  
River Basin ◽  
Urban Areas ◽  
Assessment Tool ◽  
Swat Model ◽  
Land Use Changes ◽  
Runoff Coefficient ◽  
Runoff Variation ◽  
Runoff Change ◽  
The Impact

To reveal the influence process of land use changes on runoff variation trends, this paper takes the Luojiang River of China as the study area, and the Soil and Water Assessment Tool (SWAT) model was constructed to quantitatively analyze the impact of different land uses on runoff formation in the watershed, and used the Cellular Automata-Markov (CA-Markov) model to predict future land use scenarios and runoff change trends. The results show that: (1) the SWAT model can simulate the runoff in the Luojiang River basin; (2) the runoff in the Luojiang River basin has a decreasing trend in recent 10 years, caused by the decrease of rainfall and runoff due to changes in land use; (3) the forecast shows that the land-use changes in the basin will lead to an increase in runoff coefficient in 2025. The increase of the runoff coefficient will bring some adverse effects, and relevant measures should be taken to increase the water storage capacity of urban areas. This study can help plan future management strategies for the study area land coverage and put forward a preventive plan for the possible adverse situation of runoff variation.

scholarly journals Anthropogenic pressure on the Sjan drainage basin within the Ukrainian part of the Ukrainian-Polish border

2014 ◽  
pp. 260-266
Author(s):  
T. Gurska
Keyword(s):  
Land Use ◽  
Key Words ◽  
River Basin ◽  
Anthropogenic Impact ◽  
Drainage Basin ◽  
Anthropogenic Pressure ◽  
Land Resources ◽  
International River Basin ◽  
International River

On the basis of generalization and systematization of the archival materials of Lviv Regional Department of the Environment and the data of ground account (form 6-zem) of the Department of Land Resources in Lviv region has been made the estimation of anthropogenic impact on the Sjan drainage basin. Key words: anthropogenic pressure, drainage basin, international river basin, land use.

PELAKSANAAN HUKUM KEWARISAN ISLAM DI PENGADILAN AGAMA BANTEN

ALQALAM ◽  
2013 ◽  
Vol 30 (1) ◽  
pp. 158
Author(s):  
Yusuf Somawinata
Keyword(s):  
Key Words ◽  
Islamic Law ◽  
Survey Methods ◽  
Adopted Children ◽  
Inheritance Law ◽  
Library Research ◽  
The Ideal

This article aims at describing the obseroance of wasiat wajibah (compulsory bequeathment) in the Islamic court of Banten, analyzing the provision of the substitute heir and adopted children in the Compilation of  Islamic Law (KHI). In addition, the ideal laws to manage the innheritance rules in Indonesia. This article is library research by using doctrinal approach and using case study and survey methods. The data was, then, analyzed by using analytical descriptive and analytical correlative methods. The result showed that the observance of wasiat wajibah in the Islamic court of  Banten employed by judges is by using the Mawali Hazairin’s Doctrine. The criteria of the adoption of substitute heir and adopted children in the KHI is the attempts of Ulama and many judgees junst in giving legal justice and certainty to the society.   Key Words: Islamic Inheritance Law, Compilation of Islamic Law, Islamic court of  Banten

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