scholarly journals Salinas en la Provincia de Santa Elena, Ecuador. Caracterización e impactos por la expansión urbana = Salt Flats in Santa Elena’s province, Ecuador. Characterization and impacts of urban expansion

2018 ◽  
pp. 40
Author(s):  
Yadira Henríquez Tigrero
Keyword(s):  
Plant Communities ◽  
Urban Growth ◽  
Endemic Species ◽  
Urban Expansion ◽  
State Policies ◽  
Salt Extraction ◽  
Salt Flats ◽  
The City ◽  
Santa Elena

ResumenLa extracción de la sal en la puntilla se ha venido desarrollando desde 1763, y ha sido un motor económico y medio para proveer de recursos a familias que artesanalmente se dedicaban a ella. Las salinas de la Provincia de Santa Elena conforman un ecosistema en el que convivencomunidades vegetales y especies endémicas y constituyen uno de los paisajes naturales más singulares de la provincia.En la actualidad el paisaje salinero se ha visto reducido en las últimas décadas por la expansión urbana y la carencia de políticas de estado que contemplen su conservación. El presente trabajo de investigación muestra el análisis de la situación de las salinas marinas, emplazadas en la costa de la ciudad de Salinas, centrándose en los cambios que han presentadoen los últimos años, debido a los procesos de urbanización. Desde una perspectiva histórica y etnográfica se describe el funcionamiento y  métodos de extracción de la sal; para la identificación y clasificación de las salinas tanto industriales como artesanales. El estudio comprende lavariación en la extensión de las salinas, y si son contempladas en las estrategias de protección frente al crecimiento urbano en los instrumentos normativos municipales.AbstractSalt extraction in The Salinas has been developing since 1763 and has been an economic and an engine to provide resources to families who were handcrafted engaged in it. The Salina’s municipality make up an ecosystem in which plant communities and endemic species coexist andconstitute one of the most unique provinces’s natural landscapes.Today the salt landscape has been reduced in recent decades by urban expansion and the lack of State Policies that contemplate its conservation. This research paper shows the analysis of the the salt marshes’s situation, located on the coast of the city of Salinas, focusing on the changes theyhave presented in recent years, due to urbanization processes. From a historical and ethnographic perspective, the operation and methods of salt extraction are described, for the identification and classification of both industrial and handcrafted salt flats. The study comprises the variation in the extension of the Salinas, and if they are contemplated in the strategies of protection against the urban growth in the normative instruments of the municipality.Salinas as a city its contemplating the implementation of strategies for protection of these ecosystems against the urban growth in the normative instruments of the municipality.

scholarly journals Urban Growth, Real Estate Development and Indigenous Property: Simulating the Expansion Process in the City of Temuco, Chile

2021 ◽  
Vol 10 (2) ◽  
pp. 101
Author(s):  
Francisco Maturana ◽  
Mauricio Morales ◽  
Fernando Peña-Cortés ◽  
Marco A. Peña ◽  
Carlos Vielma
Keyword(s):  
Real Estate ◽  
Urban Growth ◽  
Urban Expansion ◽  
Indigenous Communities ◽  
Objective Evaluation ◽  
Real Estate Development ◽  
Territorial Planning ◽  
The Future ◽  
Urban Scenario ◽  
The City

Urbanization is spreading across the world and beyond metropolitan areas. Medium-sized cities have also undergone processes of accelerated urban expansion, especially in Latin America, thanks to scant regulation or a complete lack thereof. Thus, understanding urban growth in the past and simulating it in the future has become a tool to raise its visibility and challenge territorial planners. In this work, we use Markov chains, cellular automata, multi-criteria multi-objective evaluation, and the determination of land use/land cover (LULC) to model the urban growth of the city of Temuco, Chile, a paradigmatic case because it has experienced powerful growth, where real estate development pressures coexist with a high natural value and the presence of indigenous communities. The urban scenario is determined for the years 2033 and 2049 based on the spatial patterns between 1985 and 2017, where the model shows the trend of expansion toward the northeast and significant development in the western sector of the city, making them two potential centers of expansion and conflict in the future given the heavy pressure on lands that are indigenous property and have a high natural value, aspects that need to be incorporated into future territorial planning instruments.

scholarly journals Цифровізація розвитку міст: Urban Atlas на основі відкритих даних для міст України

2021 ◽  
pp. 19-28
Author(s):  
Андрій Юрійович Шелестов ◽  
Алла Миколаївна Лавренюк ◽  
Богдан Ялкапович Яйлимов ◽  
Ганна Олексіївна Яйлимова
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Urban Growth ◽  
Urban Expansion ◽  
The European Union ◽  
Project Smart ◽  
Unified Algorithm ◽  
High Level ◽  
The Impact ◽  
The City

Ukraine is an associate member of the European Union and in the coming years it is expected that all data and services already used by EU countries will be available to Ukraine. The lack of quality national products for assessing the development and planning of urban growth makes it impossible to assess the impact of cities on the environment and human health. The first steps to create such products for the cities of Ukraine were initiated within the European project "SMart URBan Solutions for air quality, disasters and city growth" (SMURBS), in which specialists from the Space Research Institute of NAS of Ukraine and SSA of Ukraine received the first city atlas for the Kyiv city, which was similar to the European one. However, the resulting product had significantly fewer types of land use than the European one and therefore the question of improving the developed technology arose. The main purpose of the work is to analyze the existing technology of European service Urban Atlas creation and its improvement by developing a unified algorithm for building an urban atlas using all available open geospatial and satellite data for the cities of Ukraine. The development of such technology is based on our own technology for classifying satellite time series with a spatial resolution of 10 meters to build a land cover map, as well as an algorithm for unifying open geospatial data to urban atlases Copernicus. The technology of construction of the city atlas developed in work, based on the intellectual model of classification of a land cover, can be extended to other cities of Ukraine. In the future, the creation of such a product on the basis of data for different years will allow to assess changes in land use and make a forecast for further urban expansion. The proposed information technology for constructing the city atlas will be useful for assessing the dynamics of urban growth and closely related social and economic indicators of their development. Based on it, it is also possible to assess indicators of achieving the goals of sustainable development, such as 11.3.1 "The ratio of land consumption and population growth." The study shows that the city atlas obtained for the Kyiv city has a high level of quality and has comparable land use classes with European products. It indicates that such a product can be used in government decision-making services.

scholarly journals Antigas Salinas Urbanas e sua Oportunidade para promover Cidades Verdes: O Caso do Parque Estadual do rio Cocó em Fortaleza, Ceará, Brasil = Antiguas Salinas Urbanas y su Oportunidad de promover Ciudades Verdes: El Caso del Coco Park en Fortaleza, Ceará, Brasil = Antique Urban Salt Extraction and their Opportunity to promote Green Cities: The Cocó Park case in Fortaleza, Ceará, Brazil

2020 ◽  
pp. 89
Author(s):  
Maria Do Carmo
Keyword(s):  
Residential Areas ◽  
Production Methods ◽  
Salt Production ◽  
Salt Extraction ◽  
Urban Quality Of Life ◽  
Calidad De Vida ◽  
Salt Flats ◽  
Del Rio ◽  
The City

RESUMO:Esse ensaio contextualiza a produção de sal marinho no Brasil e sua localização no período colonial, próximo aos povoados da costa nordestina para investigar a inserção das antigas salinas nas cidades. As salinas artesanais foram transformadas em áreas residenciais, mas dada as condições ambientais de algumas áreas, ainda, existe a oportunidade de integrá-las na condição de infraestrutura urbana verde resgatando, também, sua memória cultural. Assim, se faz uma evolução das áreas ocupadas por salinas e dos métodos de produção, quando se situa às condições mais propícias a produção do sal, bem como, seus conflitos com a proteção dos ecossistemas de manguezais das planícies flúvio- marítimas. Se discute a capacidade de regeneração desses ecossistemas em áreas de salinas desativadas e sua oportunidade de instalação de parques urbanos em cidades desprovidas de verde. O caso de estudo ocorre na área das antigas Salinas Diogo, que hoje é o Parque do rio Cocó na cidade de Fortaleza. Como resultado se destaca a integração das áreas de salinas à cidade com grande ganho de qualidade de vida urbana, mas que, por outro lado, as salinas não comparecem na imagem coletiva urbana o que remete a um estudo de proteção da memória da paisagemcultural.  RESUMEN:Este ensayo contextualiza la producción de sal marina en Brasil y su ubicación en el período colonial, cerca de las aldeas de la costa noreste para investigar la inserción de antiguas salinas en las ciudades. Las salinas artesanales se transformaron en áreas residenciales, pero dadas las condiciones ambientales de algunas áreas, todavía existe la oportunidad de integrarlas en la condición de infraestructura urbana verde, también rescatando su memoria cultural. Las áreas ocupadas por solución salina y los métodos de producción evolucionan cuando se crean las condiciones más favorables para la producción de sal, así como sus conflictos con la protección de los ecosistemas de manglar de las llanuras marítimas fluviales. Se discute la capacidad regenerativa de estos ecosistemas en áreas de salinas desactivadas y su oportunidad de instalar parques urbanos. El estudio de caso ocurre en el área del antiguo Salinas Diogo, que hoy es el Parque del Río Cocó. Como resultado, se destaca la integración de las áreas salinas en la ciudad, con una gran ganancia en la calidad de vida urbana, pero las soluciones salinas no aparecen en la imagen colectiva urbana, lo que lleva a un estudio de protección de la memoria del paisajecultural.ABSTRACT:This essay contextualizes the production of sea salt in Brazil and its location in the colonial period, close to the northeastern coast villages to investigate the insertion of old salt flats in cities. The artisanal salt extraction were transformed into residential areas, but given the environmental conditions of some areas, there is still the opportunity to integrate them in the city, also rescuing their cultural memory. Occupied areas and production methods are evolved when the conditions most favorable to salt production, as well as their conflicts with the protection of mangrove ecosystems of the river-maritime plains are made. The regenerative capacity of these ecosystems in areas of deactivated salt production and their opportunity to install urban parks in cities are discussed. The case study occurs in the area of the former Salinas Diogo, which today is the Cocó River Park. As a result, the integration of saline areas into the city stands out, with a great gain in urban quality of life, but, on the other hand, salt production do not appear in the urban collective image, which leads to a study of protection of the memory of the culturallandscape.

scholarly journals Adaptation of Leopold Matrix for Assessment of Environmental Impacts Caused by the Flower Avenue Project in Manaus City - Amazonas

2019 ◽  
Vol 7 (11) ◽  
pp. 517-525
Author(s):  
Diana Barbosa de Castro ◽  
Fabiana Rocha Pinto ◽  
David Barbosa de Alencar ◽  
Ricardo Silva Parente
Keyword(s):  
Decision Making ◽  
Soil Quality ◽  
Endemic Species ◽  
Matrix Method ◽  
Urban Expansion ◽  
Urban Mobility ◽  
Negative Effects ◽  
The Matrix ◽  
Urban Problems ◽  
The City

This study aims to describe the effects generated by the construction of Avenida das Flores, has the objective of evaluating the effects caused by an urban mobility project, located in Manaus-AM, and the use of some neighborhoods of the city is prohibited. . Through this process of urban expansion, it is necessary to search for alternatives to urban problems, in addition to seeking solutions for the traffic disorder, a lack of urban mobility due to the difficulty of movement of people living in the more remote neighborhoods of central Manaus. . In this context, formulate the Matrix method of use based and adapted in the Leopold Interaction, which par excellence is dedicated to making relationships, noting the most relevant impacts. The survey allowed to obtain results that could indicate the negative effects caused by the environment in compartments such as: alteration (soil quality, area and microclimate), biotic reduction (reduction of endemic species and forest areas) and social (increase of vehicle circulation, attraction of new constructions and services, serving as a source of decision making, allowing to identify the most relevant effects for the use of instrument in decision making.

scholarly journals Integrating Data-Driven and Participatory Modeling to Simulate Future Urban Growth Scenarios: Findings from Monastir, Tunisia

Urban Science ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 10
Author(s):  
Mostapha Harb ◽  
Matthias Garschagen ◽  
Davide Cotti ◽  
Elke Krätzschmar ◽  
Hayet Baccouche ◽  
...  
Keyword(s):  
Urban Growth ◽  
Local Governments ◽  
Agricultural Land ◽  
Urban Expansion ◽  
Sustainable Urban Development ◽  
Rapid Urbanization ◽  
Participatory Modeling ◽  
Urban Growth Scenarios ◽  
Business As Usual ◽  
The City

Current rapid urbanization trends in developing countries present considerable challenges to local governments, potentially hindering efforts towards sustainable urban development. To effectively anticipate the challenges posed by urbanization, participatory modeling techniques can help to stimulate future-oriented decision-making by exploring alternative development scenarios. With the example of the coastal city of Monastir, we present the results of an integrated urban growth analysis that combines the SLEUTH (slope, land use, exclusion, urban extent, transportation, and hill shade) cellular automata model with qualitative inputs from relevant local stakeholders to simulate urban growth until 2030. While historical time-series of Landsat data fed a business-as-usual prediction, the quantification of narrative storylines derived from participatory scenario workshops enabled the creation of four additional urban growth scenarios. Results show that the growth of the city will occur at different rates under all scenarios. Both the “business-as-usual” (BaU) prediction and the four scenarios revealed that urban expansion is expected to further encroach on agricultural land by 2030. The various scenarios suggest that Monastir will expand between 127–149 hectares. The information provided here goes beyond simply projecting past trends, giving decision-makers the necessary support for both understanding possible future urban expansion pathways and proactively managing the future growth of the city.

scholarly journals Land quality and the city: Monitoring urban growth and land take in 76 Southern European metropolitan areas

2016 ◽  
Vol 45 (4) ◽  
pp. 691-712 ◽  
Author(s):  
Luca Salvati ◽  
Ilaria Tombolini ◽  
Achille Ippolito ◽  
Margherita Carlucci
Keyword(s):  
Urban Growth ◽  
Urban Areas ◽  
Environmental Changes ◽  
Urban Expansion ◽  
High Quality ◽  
Land Quality ◽  
Metropolitan Regions ◽  
Urban Containment ◽  
The Impact ◽  
The City

Urban expansion determines socioeconomic and environmental changes with unpredictable impacts on peri-urban land, especially in ecologically fragile areas. The present study assesses the impact of dense and, respectively, discontinuous urban expansion on high-quality land consumption in 76 metropolitan regions of Southern Europe. Land quality indicators and land-use maps were considered together with the aim to analyze urban growth and land take processes in Portugal, Spain, Southern France, Italy and Greece. Differences in the rate of selective land take (high- vs. low-quality soils) were observed at the metropolitan scale depending on the size of urban regions, the average level of land quality and the percentage of built-up areas and cropland in the total landscape. Discontinuous residential settlements were more frequently developed on high-quality soils in respect to both dense and mixed residential settlements and service settlements. Urbanization – especially discontinuous urban expansion – consumed high-quality land mainly in Spain and Greece. The approach presented in this paper may inform joint policies for urban containment and the preservation of high-quality soils in peri-urban areas.

Urban Growth and Land Use/Land Cover Changes in the Post-Genocide Period, Kigali, Rwanda

2021 ◽  
pp. 097542532199797
Author(s):  
Gilbert Nduwayezu ◽  
Vincent Manirakiza ◽  
Leon Mugabe ◽  
Josephine Mwongeli Malonza
Keyword(s):  
Land Cover ◽  
Urban Growth ◽  
Low Income ◽  
Natural Environment ◽  
Urban Expansion ◽  
Demographic Data ◽  
Annual Growth Rate ◽  
High Rise ◽  
Open Land ◽  
The City

Kigali is a rapidly growing city, as exemplified by the phenomenal increase of its inhabitants from 358,200 in 1996 to 1,630,657 in 2017. Nevertheless, there is a paucity of detailed analytical information about the processes and factors driving unprecedented urban growth in the period following the genocide perpetrated against the Tutsi (1994) and its impact on the natural environment. This article, therefore, analyses the growth of the city of Kigali with respect to its post-genocide spatial and demographic dimensions. The methodology involves a quantification of urban growth over the period of the last 30 years using remote-sensing imagery coupled with demographic data drawn from different sources. The analysis of land cover trends shows how significant the pressure of urban expansion has been on the natural environment, with a 14 per cent decrease in open land between 1999 and 2018. Spatially, the average annual growth rate was almost 10.24 per cent during the same period. This growth is associated with the building of a large number of institutions, schools and industries. Moreover, the increase in low-income residents led to the construction of bungalows expanding on large suburbs and the development of new sub-centres in the periphery instead of high-rise apartments.

scholarly journals Urban Fire Dynamics and Its Association with Urban Growth: Evidence from Nanjing, China

2020 ◽  
Vol 9 (4) ◽  
pp. 218 ◽  
Author(s):  
Xiaoxiang Zhang ◽  
Jing Yao ◽  
Katarzyna Sila-Nowicka ◽  
Yuhao Jin
Keyword(s):  
Urban Growth ◽  
Hot Spots ◽  
Urban Expansion ◽  
Urban Land ◽  
Geographical Information ◽  
Fire Dynamics ◽  
Fire Incident ◽  
Urban Fire ◽  
Spatial Analytics ◽  
The City

Many Chinese cities currently are facing increased urban fire risks particularly at places such as urban villages, high-rise buildings and large warehouses. Using a unique historical fire incident dataset (2002–2013), this paper is intended to explore the urban fire dynamics and its association with urban growth in Nanjing, China, with a geographical information system (GIS)-based spatial analytics and remote sensing (RS) techniques. A new method is proposed to define a range of fire hot spots characterizing different phases of fire incident evolution, which are compared with the urban growth in the same periods. The results suggest that the fire events have been largely concentrated in the city proper and meanwhile expanding towards the suburbs, which has a similar temporal trend to the growth of population and urban land at the city level particularly since 2008. Most intensifying and persistent fire hot spots are found in the central districts, which have limited urban expansion but high population densities. Most new hot spots are located in the suburban districts, which have seen both rapid population growth and urban expansion in recent years. However, the analysis at a finer spatial scale (500 m × 500 m) shows no evidences of an explicit connection between the locations of new fire hot spots and recently developed urban land. The findings can inform future urban and emergency planning with respect to the deployment of fire and rescue resources, ultimately improving urban fire safety.

scholarly journals Simulation and prediction of Shanghai urban spatial change based on random forest and CA-Markov model

2019 ◽  
Vol 1 ◽  
pp. 1-1
Author(s):  
Xuewei Dang ◽  
Liang Zhou ◽  
Xiaoen Li ◽  
Haowei Mu ◽  
Lei Che ◽  
...  
Keyword(s):  
Urban Planning ◽  
Urban Development ◽  
Urban Growth ◽  
Urban Expansion ◽  
Urban Land ◽  
Urban Land Use ◽  
City Center ◽  
Urban Simulation ◽  
The City ◽  
Red Line

<p><strong>Abstract.</strong> In the context of rapid urbanization, accurate assessment of urban expansion has become increasingly important for urban sustainable development, and smart growth theory has been put forward to avoid urban sprawl. Previous studies about urban expansion simulation focused only on ecological constrain which prevent urban growth from developing in specific regions. However, government decision-making and urban planning greatly influence urban development and limit the disorderly expansion of the urban. In this paper, we consider planning policies into urban simulation and uses the ecological protection red line, farmland protection red line and cultural protection control line as limiting factors for future urban simulation. Choosing Shanghai as the study area, we integrated Random Forests Algorithm (RFA), Markov chain and Cellular Automata (CA) to simulate urban expansion in 2015, and further predict the urban expansion in 2020, 2025 and 2030. The results show that the overall accuracy of urban land use simulation in 2015 is 93.86%, and the kappa coefficient is 0.8577. The model has a good simulation effect. Furthermore, the predicted results in 2020, 2025 and 2030 show that the urban land area in Shanghai is still increasing, and the spatial distribution of urban land has obvious circle structure and regional differences. The urban areas within 10km from the city center are growing slowly, and the region within 30km from the city center is growing faster, and there are more new urban points from 2025 to 2030. But in the area 30km away from the city center, different administrative areas show different urban growth phenomena. Among them, there are a large number of new urban points in the junction area between Songjiang District and Jinshan District, which may be the focus of future urban development planning in Shanghai. The proposed model and the results can help planners study the evolution of urban patterns and develop further urban planning.</p>

scholarly journals Automatic Detection of Spatiotemporal Urban Expansion Patterns by Fusing OSM and Landsat Data in Kathmandu

2019 ◽  
Vol 11 (19) ◽  
pp. 2296 ◽  
Author(s):  
Nishanta Khanal ◽  
Kabir Uddin ◽  
Mir Matin ◽  
Karis Tenneson
Keyword(s):  
Urban Growth ◽  
Land Use Planning ◽  
Vegetation Index ◽  
Urban Expansion ◽  
Google Earth ◽  
Growth Patterns ◽  
Rapid Expansion ◽  
Novel Approach ◽  
Accelerated Growth ◽  
The City

During the last few decades, a large number of people have migrated to Kathmandu city from all parts of Nepal, resulting in rapid expansion of the city. The unplanned and accelerated growth is causing many environmental and population management issues. To manage urban growth efficiently, the city authorities need a means to be able to monitor urban expansion regularly. In this study, we introduced a novel approach to automatically detect urban expansion by leveraging state-of-the-art cloud computing technologies using the Google Earth Engine (GEE) platform. We proposed a new index named Normalized Difference and Distance Built-up Index (NDDBI) for identifying built-up areas by combining the LandSat-derived vegetation index with distances from the nearest roads and buildings analysed from OpenStreetMap (OSM). We also focused on logical consistencies of land-cover change to remove unreasonable transitions supported by the repeat photography. Our analysis of the historical urban growth patterns between 2000 and 2018 shows that the settlement areas were increased from 63.68 sq km in 2000 to 148.53 sq km in 2018. The overall accuracy of mapping the newly-built areas of urban expansion was 94.33%. We have demonstrated that the methodology and data generated in the study can be replicated to easily map built-up areas and support quicker and more efficient land management and land-use planning in rapidly growing cities worldwide.

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