Understanding Ho Chi Minh City’s Urban Structures for Urban Land-Use Monitoring and Risk-Adapted Land-Use Planning

Downes, Nigel K.; Storch, Harry; Schmidt, Michaël; Nguyễn, Thành Tiên; Dinh, Le Canh; Tran, Thong-Nhat; Hoa, Le Thanh

doi:10.1007/978-3-319-04615-0_6

Cited by 25 publications

(22 citation statements)

References 31 publications

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“…Our field measurements show that the majority of the buildings in DaNang have two or more floors (Table 3) and consist of narrow local-type houses (67% of our reference data). As demonstrated by Downes, Storch, Schmidt, van Nguyen, and Tran (2016), these local-type buildings make up the majority of the building stock (approximately 90% of all buildings in DaNang), are typically constructed with two or more floors and are preferably used in construction areas. Based on these observations, we defined thresholds given in Table 3 to classify changes.…”

Section: Changes Of Existing Buildings and In Newly Constructed Areasmentioning

confidence: 99%

DSM-based identification of changes in highly dynamic urban agglomerations

Warth

Braun

Bödinger

et al. 2019

European Journal of Remote Sensing

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Rapidly urbanizing areas are challenged by a lack of information on urban growth in many parts of the earth. As the speed of building construction often exceeds traditional surveying methods, remote sensing can serve as a valuable input for the monitoring of urbanization processes. This study investigates changes in DaNang, Vietnam, between 2015 and 2017 identified based on photogrammetric analysis of surface elevations retrieved from Pléiades very high-resolution imagery. In contrast to traditional post-classification change detection approaches, we propose a time-efficient method solely based on digital surface model differencing to identify newly constructed buildings as well as demolitions. It is therefore easy to apply and suitable for the continuation of outdated base data available to local authorities. High importance is addressed to the vertical matching of both surface models to avoid misdetections. After differencing these surface elevations, thresholds based on field measurements are applied to identify areas of change. A total of 10,800 changes were detected between 2015 and 2017, of which 8,531 were to newly constructed buildings. The study proves that changes in rapidly urbanizing agglomerations can be reliably identified by a simple and transparent approach by using elevation changes and expert-based knowledge on floor numbers and building heights. ARTICLE HISTORY

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Section: Changes Of Existing Buildings and In Newly Constructed Areasmentioning

confidence: 99%

DSM-based identification of changes in highly dynamic urban agglomerations

Warth

Braun

Bödinger

et al. 2019

European Journal of Remote Sensing

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“…The building typology was developed based on an existing study by Downes et al (2016) for Ho Chi Minh City [9]. It has already been applied to estimate the number of different fractions of household waste [3] and was successfully transferred to the Rwandan capital, Kigali, to demonstrate the spatial patterns of urbanization between 2008 and 2015 [10].…”

Section: Building Typologymentioning

confidence: 99%

Changes in the Building Stock of Da Nang between 2015 and 2017

Braun

Warth

Bachofer

et al. 2020

Data

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This descriptor introduces a novel dataset, which contains the number and types of buildings in the city of Da Nang in Central Vietnam. The buildings were classified into nine distinct types and initially extracted from a satellite image of the year 2015. Secondly, changes were identified based on a visual interpretation of an image of the year 2017, so that new buildings, demolished buildings and building upgrades can be quantitatively analyzed. The data was aggregated by administrative wards and a hexagonal grid with a diameter of 250 m to protect personal rights and to avoid the misuse of a single building’s information. The dataset shows an increase of 19,391 buildings between October 2015 and August 2017, with a variety of interesting spatial patterns. The center of the city is mostly dominated by building changes and upgrades, while most of the new buildings were constructed within a distance of five to six kilometers from the city center.

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“…This leads to a dramatic change in the land use of the suburban area. Moreover, this area also becomes more complex and conflicts over land rights are increasing, especially in the context of the allpeople ownership of land and state management of land in Vietnam (Downes et al, 2016).…”

Section: Inequality In Land Ownershipmentioning

confidence: 99%

Inequalities between peri-urban and urban areas in urbanization process of Ho Chi Minh city: an urban political-ecology perspective

Anh

Doi

Diem

et al. 2018

HCMCOUJS - SOCIAL SCIENCES

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Thanks to the implementation of Vietnam’s economic renovation or ‘Doi Moi’ policy since 1986, Ho Chi Minh City (HCMC) urban has grown quickly. However, this also leads to an increase in inequality. Its peri-urban area, which undergoes higher level of urbanization than urban area, faces more problems such as land use change, inadequate development process, unequal allocation of services and investment, and ignorance of environmental protection and cultural preservation. These impacts show inequality in standards of living between residents of the two areas. Using the framework of the Peri-Urban Political-Ecology, this paper aims to depict a general picture of the situation and analyse the causes of social inequalities between these two areas in terms of economy, public services, and environment through “everyday practices” (i.e. events, problems, stories, etc.). The paper uses HCMC’s statistical data in 2015-2017 periods and research findings from previous studies. The results shows that the main causes in inequalities between these two areas are the inevitability of urban metabolism and the unequal power interaction among the state, society and market.

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Understanding Ho Chi Minh City’s Urban Structures for Urban Land-Use Monitoring and Risk-Adapted Land-Use Planning

Cited by 25 publications

References 31 publications

DSM-based identification of changes in highly dynamic urban agglomerations

DSM-based identification of changes in highly dynamic urban agglomerations

Changes in the Building Stock of Da Nang between 2015 and 2017

Inequalities between peri-urban and urban areas in urbanization process of Ho Chi Minh city: an urban political-ecology perspective

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