scholarly journals Overcoming Barriers to Urban Flood Resilience: A Case of Hyderabad, India

2020 ◽  
Author(s):  
Vikas Sehra ◽  
Milap Punia
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Interest Groups ◽  
Urban Space ◽  
Urban Governance ◽  
Profit Maximization ◽  
Ecological Resilience ◽  
Urban Flood ◽  
Social Ecological ◽  
Key Stakeholders

Cities are increasingly faced with frequent floods disrupting everyday lives. Adapting to flood risks and conserving eco-sensitive sites are central to social ecological resilience. Rapidly expanding cities are found short of mitigating the adverse environmental impacts. For enhancing flood resilience, it is important to understand the interaction of the key stakeholders and its impact on governance and land use in the cities. Land use change in urban space is constantly influenced by negotiations among various interest groups. The urban governance structures are increasingly dominated by neoliberal approaches of profit maximization. Following a heuristic framework for policy analysis of land use change and governance, the present study assesses the barriers in building flood resilient cities. We apply the framework to Hyderabad city of Telangana, India, which has faced the recurring challenge of flooding. Results demonstrate the lack of urgency in implementing disaster management initiatives and contradictions in existing policies. This study points out the redundancy of elected municipal bodies for taking flood resilience measures, due to increasing proliferation of nondemocratic administrative bodies and underlines the need to bridge the gap through agendas cutting across sectors and institutions.

Cellular automata for simulating land-use change with a constrained irregular space representation: A case study in Nanjing city, China

2020 ◽  
pp. 239980832094988
Author(s):  
Jie Zhu ◽  
Yizhong Sun ◽  
Shuyin Song ◽  
Jing Yang ◽  
Hu Ding
Keyword(s):  
Land Use ◽  
Cellular Automata ◽  
Land Use Change ◽  
Urban Space ◽  
Spatial Reasoning ◽  
Land Use Changes ◽  
Space Representation ◽  
Change Models ◽  
Geographic Space ◽  
Ca Model

Traditional cell-based cellular automata (CA) models use a regular cellular grid to represent geographic space, and new approaches to CA models have explored the use of a vector representation of space instead of a regular grid to characterize urban space more realistically. However, less attention has been paid to modeling the interaction between the geospatial information and the irregular cells. To date, the majority of spatial boundaries have been created by individual agencies in an uncoordinated manner. As a consequence, the potential uses of the data collected for land-use change models are limited. In this paper, we propose a new vector-based CA model based on a new constrained irregular space representation using the theory of hierarchical spatial reasoning. For dividing the geographic space considering different items, first land patches are considered as the minimum division unit; then aggregation rules, including attribute, geometric and boundary barrier constraints, are defined; and finally different levels of spatial units are formed through land patches based on aggregation rules. The proposed model is used to simulate the land-use changes in Nanjing, Jiangsu Province, China. The performance validation and comparison illustrate the feasibility of the proposed space representation in a CA model. By using this model, it is expected that the use of the real spatial boundaries that are employed in urban planning could help provide a flexible paradigm to consider various drivers or constraints for realistically simulating land-use changes.

scholarly journals Analysis of disaster resilience of urban planning facilities on urban flooding vulnerability

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Kiyong Park ◽  
Hoo Oh ◽  
Jeong-hun Won
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Urban Space ◽  
Land Use Planning ◽  
Flood Damage ◽  
Disaster Resilience ◽  
Urban Flooding ◽  
Urban Resilience ◽  
Urban Flood ◽  
Commercial Area

Rainfall continues to increase due to the influence of global warming and is resulting in an increase in flood damage. The purpose of this study is to propose an approach for reducing urban flood damage and improving urban resilience. Urban flooding vulnerability analysis used land use and building characteristics as evaluation indicators. Disaster resilience analysis of urban planning facilities focused on urban and spatial aspects. The results of these analyses were overlapped to analyze whether urban planning facilities were properly located in areas vulnerable to urban flooding. The result of mapping the two results showed that there are some urban planning facilities with low resilience in the Red Zone, the central commercial area of Changwon, which has the highest vulnerability. This zone should have the appropriate placement of high-resilience facilities, such as disaster prevention facilities and space facilities. This study proposes a method to minimize flood damage in urban space. This system can cope with and systematically manage flood damage by increasing disaster resilience through appropriate land use planning and site selection for urban planning facilities.

scholarly journals Analysing the Brazilian Sugarcane Agroecological Zoning: Is This Government Policy Capable of Avoiding Adverse Effects from Land-Use Change?

2021 ◽  
Author(s):  
◽  
Mateus Almeida
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Ghg Emissions ◽  
Structured Interviews ◽  
Face To Face ◽  
Brazilian Government ◽  
Key Stakeholders ◽  
Monitoring And Enforcement ◽  
Legal Frameworks ◽  
Near Future

<p>There are doubts about the reliability of so-called biofuels to reduce greenhouse gas (GHG) emissions and conserve biodiversity. Brazil is the largest producer of sugarcane ethanol in the world. This thesis analyses the extent to which the Brazilian Sugarcane Agroecological Zoning (ZAE Cana), a federal policy developed in 2009, can contribute to reducing, or avoiding, adverse environmental impacts in terms of GHG emissions and biodiversity degradation. It takes into account both direct and indirect effects of land-use change (LUC) caused by the expansion of sugarcane in Brazil. Because sugarcane expansion has primarily displaced areas of pasture, most of the literature reviewed, and information from the participants, are optimistic in regard to GHG emissions due to direct LUC. But the expansion of sugarcane has caused biodiversity impacts and it may be aggravated in the near future. Despite increase in agricultural productivity, studies contend that indirect LUC caused by the increase in sugarcane ethanol production in Brazil is expected to take place. Qualitative face-to-face, semi-structured interviews were undertaken with experts representing private institutions, the Brazilian government, the sugarcane industry association and the NGO WWF-Brazil. The key stakeholders were chosen to elicit knowledge from a range of respondents with experience of the production of Brazilian sugarcane ethanol. The interviews were also used to investigate the importance of, and motivations to create, ZAE Cana. ZAE Cana has shortcomings and there is significant impact on LUC caused by other agricultural activities. Monitoring and enforcement of specific legal frameworks are important. Agroecological zonings for other activities such as pasture, soybeans and corn should also be developed to control detrimental indirect LUC.</p>

scholarly journals ANALISIS PERTUMBUHAN PENDUDUK TERHADAP PERUBAHAN PENGGUNAAN LAHAN DI KOTA BUKITTINGGI

2016 ◽  
Vol 5 (2) ◽  
pp. 200
Author(s):  
Sri Mariya
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Population Growth ◽  
Urban Space ◽  
Secondary Data ◽  
Population Data ◽  
Final Analysis ◽  
Rice Fields ◽  
Dominant Factor ◽  
Urban Village

Bukitinggi city is the most populous city in West Sumatra, experiencing an increase in population from year to year, the limitations of urban space that causes pressure on urban space. Such as the occurrence of land conversion for the physical construction of the city, such as: settlement, trade and services, and others. Based on this research, the aim of this study is to obtain information, discuss and analyze (1) population growth of Bukittinggi City in 2000-2010, (2) to identify land use change of Bukitinggi city in 2000-2010, and (3) to identify the characteristics of change Land use due to population growth and how the utilization of Bukitinggi City space. The type of research used is descriptive research with secondary data analysis method with the support of Geographic Information System (GIS). The data used are population data of Bukittinggi City 10 years (2000-2010), Land Use Map of Bukit Tinggi City (2000 and 2010), and Map of RTRW Kota Bukitinggi 2010 as final analysis. The results showed that: (1) the population growth of Bukittinggi City in 2000-2010 was 0.02 or 2% which indicated an increase in population. The dominant factor that affects is migration (residents coming). The most populous urban village is Sapiran 12orang / km2 which is the center of TNI and Polri dormitory, while the urban village is Puhun Pintu Kabun with density of 2 person / km2, (2) land use change in settlement, rice field, mixed or moorland, Services. The largest expansion occurred from mixed or cultivated gardens of 1.75 km2. Other changes occurred in the settlement of 0.06 km2 and trade and services 0.14 km2. (3) Characteristics of land use change due to population growth in relation to spatial use dominated by mixed or mooring farms into 6.89% (174.6 ha) settlements, rice fields became 0.25% (6.4 ha) settlements, and rice fields became Mixed garden 0.55% (14 ha). Linkages to the use of space is the study of green space: Park City, Village Pintu Kabun and Bukit Apit there is development of settlements as the development of the area towards the north which needs to be done policy priorities.

scholarly journals Analysing the Brazilian Sugarcane Agroecological Zoning: Is This Government Policy Capable of Avoiding Adverse Effects from Land-Use Change?

2021 ◽  
Author(s):  
◽  
Mateus Almeida
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Ghg Emissions ◽  
Structured Interviews ◽  
Face To Face ◽  
Brazilian Government ◽  
Key Stakeholders ◽  
Monitoring And Enforcement ◽  
Legal Frameworks ◽  
Near Future

<p>There are doubts about the reliability of so-called biofuels to reduce greenhouse gas (GHG) emissions and conserve biodiversity. Brazil is the largest producer of sugarcane ethanol in the world. This thesis analyses the extent to which the Brazilian Sugarcane Agroecological Zoning (ZAE Cana), a federal policy developed in 2009, can contribute to reducing, or avoiding, adverse environmental impacts in terms of GHG emissions and biodiversity degradation. It takes into account both direct and indirect effects of land-use change (LUC) caused by the expansion of sugarcane in Brazil. Because sugarcane expansion has primarily displaced areas of pasture, most of the literature reviewed, and information from the participants, are optimistic in regard to GHG emissions due to direct LUC. But the expansion of sugarcane has caused biodiversity impacts and it may be aggravated in the near future. Despite increase in agricultural productivity, studies contend that indirect LUC caused by the increase in sugarcane ethanol production in Brazil is expected to take place. Qualitative face-to-face, semi-structured interviews were undertaken with experts representing private institutions, the Brazilian government, the sugarcane industry association and the NGO WWF-Brazil. The key stakeholders were chosen to elicit knowledge from a range of respondents with experience of the production of Brazilian sugarcane ethanol. The interviews were also used to investigate the importance of, and motivations to create, ZAE Cana. ZAE Cana has shortcomings and there is significant impact on LUC caused by other agricultural activities. Monitoring and enforcement of specific legal frameworks are important. Agroecological zonings for other activities such as pasture, soybeans and corn should also be developed to control detrimental indirect LUC.</p>

Assessment of land-use change in coastal areas through geographical information systems

2020 ◽  
Vol 13 (10) ◽  
Author(s):  
Verónica Lango-Reynoso ◽  
Karla Teresa González-Figueroa ◽  
Fabiola Lango-Reynoso ◽  
María del Refugio Castañeda-Chávez ◽  
Jesús Montoya-Mendoza
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Geographical Information Systems ◽  
Design Methodology ◽  
Scientific Information ◽  
Coastal Ecosystems ◽  
Coastal Areas ◽  
Geographical Information ◽  
Coastal Zones ◽  
Computer Based

Objective: This article describes and analyzes the main concepts of coastal ecosystems, these as a result of research concerning land-use change assessments in coastal areas. Design/Methodology/Approach: Scientific articles were searched using keywords in English and Spanish. Articles regarding land-use change assessment in coastal areas were selected, discarding those that although being on coastal zones and geographic and soil identification did not use Geographic Information System (GIS). Results: A GIS is a computer-based tool for evaluating the land-use change in coastal areas by quantifying variations. It is analyzed through GIS and its contributions; highlighting its importance and constant monitoring. Limitations of the study/Implications: This research analyzes national and international scientific information, published from 2007 to 2019, regarding the land-use change in coastal areas quantified with the digital GIS tool. Findings/Conclusions: GIS are useful tools in the identification and quantitative evaluation of changes in land-use in coastal ecosystems; which require constant evaluation due to their high dynamism.

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