scholarly journals Suelos Y Karst, Origen De Inundaciones Y Hundimientos En Chetumal, Quintana Roo, México

2018 ◽  
Vol 14 (14) ◽  
pp. 33 ◽  
Author(s):  
Patricia Fragoso-Servón ◽  
Alberto Pereira-Corona
Keyword(s):  
Land Use ◽  
Growth Rate ◽  
Population Growth Rate ◽  
Land Use Changes ◽  
Development Program ◽  
Quintana Roo ◽  
Development Programs ◽  
Mexican Caribbean ◽  
The City ◽  
Over Time

The Mexican Caribbean and its main cities have the highest population growth rate in Mexico. This work goal was to analyze the growth of the city of Chetumal and the geopedological characteristics in which it has been developed, to identify potential hazards and thereby improve development programs. The methodology consisted in the study of geopedological characteristics and the analysis of land use changes in the city over time. The main problems of Chetumal are floods and subsidence. Floods are more common in areas where Gleysols soils are found in low-lying areas. The subsidence is associated to Leptosols with a phreatic mantle at a shallow depth where the precipitations favors dissolution of rock. The extrapolation of the relationships between geopedological conditions and the area occupied by the city, allows us to suppose that areas which the current Urban Development Program proposes for future city expansion will develop the same problems of subsidence and flooding as the areas already built in sites with similar conditions.

Enterprise Development Programming in Partnership with Local Government, Science and Business. The Example of Rybnik

2017 ◽  
Vol 13 ◽  
pp. 53-61
Author(s):  
Wojciech Kiljańczyk
Keyword(s):  
Economic Development ◽  
Local Government ◽  
Development Program ◽  
Development Programs ◽  
Enterprise Development ◽  
Entrepreneurship Development ◽  
Development Programming ◽  
Development Plans ◽  
Resources And Capabilities ◽  
The City

The article concerns the mechanisms of entrepreneurship development in partnership with local government, science and business. The author presents evidence that the sector partnership is crucial for the success of projects developing entrepreneurship in the local and regional perspective. Local government has the resources and capabilities to act as initiators of projects and programs supporting the economic development of the city or voivodeship. At the same time, representatives of local government units must use appropriate operational and management methods in the implementation of the policy of strengthening entrepreneurship. Inter-sectoral collaboration requires the application of organisational solutions allowing for the involvement of units in different fields and basing on various legislation. The author also indicates that the source of the competitive advantage of cities and regions may be the specialisation, as well as the commercialisation of knowledge and technology. In this case, the inter-sectoral partnership is crucial as it conditions the success of economic development programs in its social, economic and political sense. At the same time, the article describes the methods of building the inter-sectoral cooperation. As a basis for the appropriate use of the different potential of the cooperating participants, the authors indicated projects and programs embracing groups of projects. All this is worth being recognised within the framework of strategic documents, such as development plans, strategies, and other records used by local government agencies. The article uses the outcome of the participatory workshops during the preparation of the Rybnik Enterprise Development Program. The aim of the study is the verification of the assumption that the sectoral partnership is crucial to the processes of local and regional entrepreneurship development.

PREDIKSI PERTUMBUHAN PENDUDUK PADA PROVINSI SUMATERA BARAT DENGAN MENGGUNAKAN METODE BACKPROPAGATION

2020 ◽  
Vol 7 (4) ◽  
pp. 216
Author(s):  
Hijrah Yanti Sitanggang ◽  
Vera Irma Delianti
Keyword(s):  
Neural Networks ◽  
Growth Rate ◽  
Artificial Neural Networks ◽  
Population Growth ◽  
Population Growth Rate ◽  
Backpropagation Neural Networks ◽  
West Sumatra ◽  
Artificial Neural ◽  
The City

The problem of population is one of the problems in the Province of West Sumatra, especially in the City of Padang, Kota Bukitinggi, and the City of Payakumbuh which has a very fast population growth rate, this occurs due to several factors such as births, deaths, residents who come, and residents who leave. The highest population growth occurred in Padang City in 2018 amounting to 939,112 residents and the smallest population growth occurred in the City of Bukitinggi in 2014 amounting to 120,491 residents. The purpose of this study is to predict population growth that will occur in 2019 in the cities of Padang, Bukittinggi and Payakumbuh. The method used in this research is descriptive correlational by applying backpropagation neural networks. The application used is Matlab. Based on the problems and methods obtained, the predicted results in 2019 in Padang City amounted to 124,7150, Bukittinggi numbered 126,8040 and Payakumbuh totaled 128.7830.  Keywords: Artificial Neural Networks, Backpropagation, Matlab.

scholarly journals Study on Land-use Changes and Their Impacts on Air Pollution in Chengdu

Atmosphere ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 42 ◽  
Author(s):  
Wei Sun ◽  
Zhihong Liu ◽  
Yang Zhang ◽  
Weixin Xu ◽  
Xiaotong Lv ◽  
...  
Keyword(s):  
Land Use ◽  
Wind Speed ◽  
Correlation Coefficient ◽  
Urban Areas ◽  
Land Use Changes ◽  
Urban Land ◽  
Urban Land Use ◽  
Simulation Results ◽  
The City ◽  
Better Than

The expansion of urban areas and the increase in the number of buildings and urbanization characteristics, such as roads, affect the meteorological environment in urban areas, resulting in weakened pollutant dispersion. First, this paper uses GIS (geographic information system) spatial analysis technology and landscape ecology analysis methods to analyze the dynamic changes in land cover and landscape patterns in Chengdu as a result of urban development. Second, the most appropriate WRF (Weather Research and Forecasting) model parameterization scheme is selected and screened. Land-use data from different development stages in the city are included in the model, and the wind speed and temperature results simulated using new and old land-use data (1980 and 2015) are evaluated and compared. Finally, the results of the numerical simulations by the WRF-Chem air quality model using new and old land-use data are coupled with 0.25° × 0.25°-resolution MEIC (Multi-resolution Emission Inventory for China) emission source data from Tsinghua University. The results of the sensitivity experiments using the WRF-Chem model for the city under different development conditions and during different periods are discussed. The meteorological conditions and pollution sources remained unchanged as the land-use data changed, which revealed the impact of urban land-use changes on the simulation results of PM2.5 atmospheric pollutants. The results show the following. (1) From 1980 to 2015, the land-use changes in Chengdu were obvious, and cultivated land exhibited the greatest changes, followed by forestland. Under the influence of urban land-use dynamics and human activities, both the richness and evenness of the landscape in Chengdu increased. (2) The microphysical scheme WSM3 (WRF Single–Moment 3 class) and land-surface scheme SLAB (5-layer diffusion scheme) were the most suitable for simulating temperatures and wind speeds in the WRF model. The wind speed and temperature simulation results using the 2015 land-use data were better than those using the 1980 land-use data when assessed according to the coincidence index and correlation coefficient. (3) The WRF-Chem simulation results obtained for PM2.5 using the 2015 land-use data were better than those obtained using the 1980 land-use data in terms of the correlation coefficient and standard deviation. The concentration of PM2.5 in urban areas was higher than that in the suburbs, and the concentration of PM2.5 was lower on Longquan Mountain in Chengdu than in the surrounding areas.

scholarly journals Preparing for Sea-Level Rise through Adaptive Managed Retreat of a New Zealand Stormwater and Wastewater Network

2020 ◽  
Vol 5 (11) ◽  
pp. 92 ◽  
Author(s):  
Rick Kool ◽  
Judy Lawrence ◽  
Martin Drews ◽  
Robert Bell
Keyword(s):  
Climate Change ◽  
Land Use ◽  
New Zealand ◽  
Sea Level Rise ◽  
Sea Level ◽  
Local Governments ◽  
Land Use Changes ◽  
Adaptation Option ◽  
Levels Of Service ◽  
Over Time

Sea-level rise increasingly affects low-lying and exposed coastal communities due to climate change. These communities rely upon the delivery of stormwater and wastewater services which are often co-located underground in coastal areas. Due to sea-level rise and associated compounding climate-related hazards, managing these networks will progressively challenge local governments as climate change advances. Thus, responsible agencies must reconcile maintaining Levels of Service as the impacts of climate change worsen over the coming decades and beyond. A critical question is whether such networks can continue to be adapted/protected over time to retain Levels of Service, or whether eventual retreat may be the only viable adaptation option? If so, at what performance threshold? In this paper, we explore these questions for stormwater and wastewater, using a dynamic adaptive pathway planning (DAPP) approach designed to address thresholds and increasing risk over time. Involving key local stakeholders, we here use DAPP to identify thresholds for stormwater and wastewater services and retreat options, and for developing a comprehensive and area-specific retreat strategy comprising pathway portfolios, retreat phases, potential land use changes, and for exploring pathway conflicts and synergies. The result is a prototype for an area near Wellington, New Zealand, where a managed retreat of water infrastructure is being considered at some future juncture. Dynamic adaptive strategies for managed retreats can help to reduce future disruption from coastal flooding, signal land use changes early, inform maintenance, and allow for gradual budget adjustments by the agencies that can manage expenditure over time. We present this stepwise process in a pathway form that can be communicated spatially and visually, thereby making a retreat a more manageable, sequenced, adaptation option for water agencies, and the communities they serve.

scholarly journals CELLULAR AUTOMATA MODEL – LANDSCAPE DYNAMICS SIMULATION TOOL IN THE PROCESS OF CHANGE IN LAND USE AND COVER IN THE CITY OF GAÚCHA DO NORTE – MT

2020 ◽  
Vol XLII-3/W12-2020 ◽  
pp. 447-451
Author(s):  
E. A. L. Pinheiro ◽  
N. A. Camini ◽  
M. R. S. Soares ◽  
S. S. Sumida
Keyword(s):  
Land Use ◽  
Cellular Automata ◽  
Land Use Change ◽  
Land Use Changes ◽  
Environmental Modeling ◽  
Dynamics Simulation ◽  
Cellular Automata Model ◽  
The City ◽  
Land Use And Cover ◽  
Main Factor

Abstract. The factors that contribute to land use change in the municipality of Gaúcha do Norte - MT, are entirely linked to the economic process and agricultural production. This process has left Brazil in a state of alert due to the process of deforestation and loss of tropical forests. From 2000 to 2010, the forest areas converted into agriculture accounted for 13.3%, the main factor that directly potentiated with deforestation was the cultivation of soybeans, which in turn was occupying places previously occupied by livestock and pushing the livestock forest inside. The phenomena of land use change and land cover start from multidimensional issues in the environmental and economic context. The use of environmental modeling through cellular automata to analyze land use change phenomena and reproduce the trajectory through future land use simulations and evolution establishes an integration associated by mathematical models and flow integration systems. That predict the trajectory of land use change, thus generating a dynamic model capable of predicting future land use changes by replicating possible patterns of landscape evolution and enabling assessments of future ecological implications for the environment.

scholarly journals PREDIKSI SPASIAL DINAMIKA AREAL TERBANGUN KOTA SEMARANG DENGAN MENGGUNAKAN MODEL REGRESI LOGISTIK

2016 ◽  
Vol 18 (2) ◽  
pp. 95 ◽  
Author(s):  
Irmadi Nahib
Keyword(s):  
Land Use ◽  
Logistic Regression ◽  
Cellular Automata ◽  
Land Cover ◽  
Open Space ◽  
Land Use Changes ◽  
Binary Logistic Regression ◽  
Binary Logistic Regression Model ◽  
Rate Of Increase ◽  
The City

<p class="JudulABSInd"><strong>ABSTRAK</strong></p><p class="abstrak">Salah satu indikator perkembangan fisik wilayah kota dapat diidentifikasi melalui fenomena perubahan tutupan lahan bervegetasi menjadi lahan terbangun. Perubahan lahan tersebut dapat berdampak terhadap penurunan kualitas lingkungan, akibat berkurangnya ruang terbuka hijau. Kota Semarang dengan visi terwujudnya Semarang sebagai kota perdagangan dan jasa yang berbudaya menuju masyarakat sejahtera, merupakan  wilayah yang rentan mengalami perubahan penggunaan lahan yang cenderung kearah lahan terbangun. Penelitian ini mengintegrasikan model <em>Cellular Automata</em> (CA) dan regresi logistik biner untuk memprediksi dinamika lahan terbangun di Kota Semarang. Citra yang digunakan adalah Citra Ikonos 2002, Ikonos 2006 dan <em>Quic</em><em>kbird</em> 2012. Model CA pada penelitian ini digunakan untuk memprediksi sebaran penutup lahan tahun 2022 dan 2032 dengan mempertimbangkan jarak terhadap jalan, jarak terhadap sungai, jarak terhadap lahan terbangun, ketinggian, kepadatan penduduk, <em>evidence likelihood </em>perubahan lahan dan indeks pengembangan kelurahan yang diakomodasi dalam peta sub-model transisi hasil model regresi logistik biner. Hasil penyusunan model ini adalah peta prediksi penutup lahan dengan akurasi 78,21 % validitas model yang dihasilkan dapat dikategorikan “<em>moderate</em>” mengindikasikan bahwa peta yang dihasilkan dapat digunakan. Hasil pemodelan menunjukkan bahwa Kota Semarang pada tahun 2022 terjadi pertambahan luas lahan terbangun rata-rata 284 ha/tahun dan pada tahun 2032 rata-rata 226 ha/tahun.</p><p><strong><em>Kata </em></strong><strong><em>k</em></strong><strong><em>unci</em></strong><em>: </em><em>cellular automata, pemodelan, regresi logistik biner, lahan terbangun</em></p><p class="judulABS"><em><strong>ABSTRACT</strong></em></p><p class="Abstrakeng">One indicator of the physical development of the city can be identified by phenomenon of land expansion, vegetated land cover changes to be built-up area. The land use changes can impact to environmental degradation, due to reduced green open space. Semarang as a city of trade and services cultured toward a prosperous community, a region that is vulnerable to changes in land use tends toward small plots. This research integrates the model of Cellular Automata (CA) and binary logistic regression to predict the dynamics of builtup area in the city of Semarang. The image used is a Ikonos imagery (2002), Ikonos imagery (2006) and Quickbird (2012). Model CA in this research use to predict the distribution of land cover 2022 and 2032 with respect to: distance to roads, the distance to the river, the distance to the built-up area, elevation, population density, evidence likelihood of land use change and development villages index were accommodated in the map sub-model transition binary logistic regression model results. The results of this study are predictive maps of built-up area  with an accuracy of 78,21 % so that the validity of the resulting model can be categorized as "moderate", indicates that the probability map is valid. Modeling results showed that Semarang City in 2022 predicted rate of increase of  built-up area an average 284  ha / year and in 2032 rate of increase of built-up area an average 226 ha / year.</p><p><strong><em>Keywords</em></strong><em>: cellular automata, modelling, binary logistic regression, built-up area</em></p>

scholarly journals Land Use Changes in Peripheral Rural Areas of the City Parts Bratislava

2012 ◽  
Vol 16 (1) ◽  
pp. 96-105
Author(s):  
Blažena Hógelová ◽  
Marián Kulla ◽  
Peter Spišiak
Keyword(s):  
Land Use ◽  
Rural Areas ◽  
Land Use Changes ◽  
The City

scholarly journals Temporal changes of sediment dynamics within the Nairobi River sub-basins between 1998-2006 time scale, Kenya

2010 ◽  
Vol 42 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Shadrack Kithiia ◽  
Boniface Wambua
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Time Scale ◽  
Land Use Changes ◽  
Management Strategies ◽  
Temporal Changes ◽  
Sediment Dynamics ◽  
Eastern Africa ◽  
Agricultural System ◽  
The City

Temporal changes of sediment dynamics within the Nairobi River sub-basins between 1998-2006 time scale, Kenya The city of Nairobi is the heart of both industrial production and the economic hub in Kenya and the Eastern Africa region. The city of Nairobi and its environs are drained by three streams, namely: Nairobi, Mathare and Ngong rivers. These streams drain areas of diverse land use activities. The land use changes in a spatial manner from the rich agricultural system through residential cum urban to industrial. The significance of these various land use systems to pollutants generation, pollution, sediment generation and hence water pollution and quality degradation is quite enormous and worth investigation. The land use changes in a spatial manner making the basin ideal for a temporal variation of sediments yields along the river profile and their impacts on the water quality status. This paper examines the results of study carried out within the basins in the years 1998-2006. The method of study involved water sampling and laboratory analysis to reveal the trends in sediment load increases downstream the investigated streams. Soil samples were also investigated to determine their relationship to soil erosion rates and sediment fluxes. The study attempts further to find the best sediment management strategies in reversing their increasing trends and restoring water quality within the basin.

scholarly journals Spatial Analysis Of Land Use Changes Towards Banjarbaru City's Regional Spatial Plan

2021 ◽  
Vol 1 (11) ◽  
Author(s):  
Setya Etika Mulyasari ◽  
Suyanto Suyanto ◽  
Gusti M. Hatta ◽  
Bambang Joko Priatmadi
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Land Use Changes ◽  
Vacant Land ◽  
City Development ◽  
Dry Land ◽  
Wetland Agriculture ◽  
The Village ◽  
The City ◽  
Spatial Plan

Banjarbaru City is one of the cities in South Kalimantan Province which is developing quite rapidly from year to year. Hence,  it is necessary to research and study changes in land use and their suitability with the city development plan. The purpose of this study is to examine changes in the area and types of land use changes in Banjarbaru City within a period of 8 years, from 2013 to 2021, determine the rate of land use change, and assess the suitability of land use changes to the applicable Banjarbaru City spatial plan. This research method is an overlay to see changes in land use and the suitability of changes in land use with the direction of spatial functions in the Regional Spatial Plan. The result of this research is that in an area of ​​16,414.00 ha (53.7%) there is a change in land use in Banjarbaru City in the period 2013-2021. The biggest land use changes are dry land agriculture, vacant land, wetland agriculture, housing, and villages. The use of dry land  and agricultural land has the largest decrease in area, which is 15,090.71 ha or a decrease of 365.5%. The use of vacant land increased in an area of ​​14,715.684 hectares or an increase of almost 4 times. Wetland agriculture has decreased in an area which is reduced by 986.55 ha or decreased by 65.8%. The use of land for housing/residential in the form of housing or villages has also undergone considerable changes. The use of residential land has increased by 528.105 hectares (44.626%) and the village area to 444.32 ha (21.2%). The suitability of land use with the RTRW in Banjarbaru City is 16,742.86 ha (54.8%) categorized as appropriate, while an area of ​​13,779.69 ha (45.2%) is categorized as not in accordance with the applicable RTRW.

scholarly journals Efisiensi Penggunaan Grey Water dan Air Hujan dalam Rangka Menurunkan Tingkat Penggunaan Air Baku

2019 ◽  
Vol 20 (2) ◽  
pp. 215
Author(s):  
Muhamad Yusup Hidayat ◽  
Ridwan Fauzi ◽  
Alfonsus Hasudungan Harianja ◽  
Grace Serepina Saragih
Keyword(s):  
Growth Rate ◽  
Population Growth Rate ◽  
Domestic Wastewater ◽  
Residential Area ◽  
Clean Water ◽  
Water Usage ◽  
Domestic Waste ◽  
Grey Water ◽  
The City ◽  
Range Of Values

ABSTRACTThe population growth rate in big cities such as Jakarta and its satellite cities has a correlation that is directly proportional to the level of clean water consumption. The biggest consumption of clean water is generally used for domestic household needs. However, the use of clean water is still not efficient. Therefore, the efficiency of water-saving needs to be carried out by utilizing sources that have not been optimally used, for example, greywater and rainwater. The purpose of this study is to determine the level of water usage in 3 (three) types of housing and the level of efficiency of utilization of domestic wastewater (greywater) and rainfall (CH) in reducing the use of clean water. This research was performed in the Villa Bintang Mas residential area in the City of South Tangerang, the Villa Bintang Mas residential area in the City of Depok, and the Selakopi Hijau/Forestry residential area in the City of Bogor. Data collection was conducted by a series of surveys using a questionnaire on the sample of a household. The results show that the data processing needs of clean water in three residentials range of values between ± 158.84 Liters/person/day up to ± 215.38 Liters/person/day. The level of efficiency of the utilization of greywater and rainwater in reducing the usage of clean water in three housing ranges from 21.12% to 58.47%.Keywords: Domestic Waste, the Use of Clean Water ABSTRAKTingkat pertumbuhan penduduk di kota-kota besar seperti jakarta dan kota-kota satelitnya memiliki korelasi yang berbanding lurus dengan tingkat konsumsi air bersih yang dimanfaatkan oleh masyarakat. Konsumsi air bersih terbesar adalah untuk kebutuhan domestik rumah tangga. Penggunaan air bersih saat ini masih belum mengikuti kaidah efisiensi dalam penggunaannya, untuk itu efisiensi penghematan air perlu segera dilakukan dengan memanfaatkan sumber-sumber lain yang belum termanfaatkan, antara lain air limbah domestik rumah tangga (grey water) dan air hujan. Tujuan dari penelitian ini adalah mengetahui tingkat pemakaian air di 3 (tiga) tipe perumahan,serta tingkat efisiensi pemanfaatan air limbah domestik rumah tangga (grey water) serta curah hujan (CH) dalam menurunkan pemakaian air bersih. Penelitian ini dilaksanakan di Perumahan Villa Bintang Mas, Kota Tangerang Selatan, Perumahan Permata Depok, Kota Depok, dan Perumahan Selakopi Hijau/Kehutanan, Kota Bogor. Pengambilan data dilakukan dengan cara survei menggunakan kuesioner pada rumah tangga yang menjadi sampel. Hasil pengolahan data memperlihatkan bahwa kebutuhan air bersih di tiga perumahan berkisar pada rentang nilai antara ±158,84 Liter/Orang/Hari sampai dengan ± 215.38 Liter/Orang/Hari. Tingkat efisiensi pemanfaatan grey water dan air hujan dalam mengurangi pemakaian air bersih di tiga perumahan berkisar antara 21,12% hingga 58,47%.Kata kunci: Limbah Domestik, Penggunaan Air Bersih 

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