Impacts of Land use Changes on Urban Heat Islands in Hanoi, Vietnam: Scenario Analysis

Trihamdani, Andhang Rakhmat; Kubota, Tetsu; Lee, Han Soo; Sumida, Kento; Phương, Trần Thị Thu

doi:10.1016/j.proeng.2017.07.107

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…The city has rapidly urbanized since the country adopted economic reforms that drove built-up land to exponentially expand, especially in the buffer zone between 10 and 35 km from the city centre [9]. The change in land use in Hanoi has increased the number of hotspots and also increased the average night air temperature in new urban areas by up to 1 • C [10].…”

Section: Introductionmentioning

confidence: 99%

The Environmental Effects of Urban Development in Hanoi, Vietnam from Satellite and Meteorological Observations from 1999–2016

2019

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Since 1990 the Hanoi capital region (or Hanoi metropolitan area) in Vietnam has undergone rapid development, which has gone together with increasing socio-economic growth and prosperity. However, the environmental degradation that has accompanied urban development has raised considerable concern from the public in recent years. This research investigates the effects of urban development on urban sprawl, urban heat island (UHI), and metropolitan weather phenomena that are related to the quality of urban life in the period from 1999–2016. To achieve these objectives, remote sensing technologies were applied to satellite images at three time points (i.e., 1999, 2009, and 2016) that were associated with the meteorological dataset from ground-based stations. The spatial distribution evolution was examined for the land use/land cover changes while using the normalized difference vegetation index (NDVI) and normalized difference built-up index (NDBI). The increasing impact of urban sprawl on UHI intensity is determined based on the land surface temperature (LST) in multi-temporal forms. Increasing urbanization with the development of gradual outward and northward expansion from the city centre intensified the correlation analysis shows that the UHI. The potential formation of new UHI areas in the near future is also indicated. Furthermore, more than 30% of the metropolitan area is decaying in ecological quality according to an assessment of the urban thermal field variance index (UTFVI). With respect to metropolitan weather, the urbanization in Hanoi affected the observation of meteorological parameters revealed that the relative humidity, total rainfall, temperature, and wind speed over both urban and rural areas. The overall results imply that urban development and its environmental effects and impacts have imposed pressing issues and new challenges to sustainable development in the Hanoi metropolitan area.

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Section: Introductionmentioning

confidence: 99%

The Environmental Effects of Urban Development in Hanoi, Vietnam from Satellite and Meteorological Observations from 1999–2016

2019

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“…The prediction of the urban heat island effect is a complex problem that depends on a multitude of factors that are responsible for the increased temperature phenomena occurring in urban areas. The ongoing urbanization process leads to anthropogenic changes in the land use, such as the replacement of vegetation and green areas by residential and industrial areas [33], which are essential for the mitigation of higher temperatures [30]. According to Lo and Quattrochi land-cover characteristics, such as the used building materials and their properties such as degree of absorption, radiation properties, albedo, and evaporation rates, are also influencing factors [21].…”

Section: Classificationmentioning

confidence: 99%

Visual Analytics of Volunteered Geographic Information: Detection and Investigation of Urban Heat Islands

Seebacher

Miller

Polk

et al. 2019

IEEE Comput. Grap. Appl.

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Urban heat islands are local areas where the temperature is much higher than in the vicinity and are a modern phenomenon that occurs mainly in highly developed areas, such as large cities. This effect has a negative impact on energy management in buildings and also has a direct impact on human health, especially for elderly people. With the advent of volunteered geographic information from private weather station networks, more high resolution data is now available within cities to better analyze this effect. However, such data sets are large and have heterogeneous characteristics requiring visualinteractive applications to support further analysis. We use machine learning methods to predict urban heat islands occurrences and utilize temporal and spatio-temporal visualizations to contextualize the emergence of urban heat islands to comprehend the influencing causes and their effects. Subsequently, we demonstrate the analysis capabilities of our application by presenting two use cases.

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“…In addition, there are several solutions for mitigating undesirable impacts brought by the LULCC that could be applied in Nam Tu Liem District. It includes decent urban planning and management for fighting urban heat [33,34], well-planned arrangement of trees in the city [6], combatting congestion and pollution by banning motorbikes in Hanoi [21], upgrading road networks and rail station [6].…”

Section: Mitigationmentioning

confidence: 99%

“…Due to massive disturbance of the economic growth to the environment, the Vietnam government officially implemented a proposed "Master plan of Hanoi 2030, Vision to 2050" or HMP in 2011 [5], which goal is to transform Hanoi into a smart city [5]. In order to achieve the HMP goal, some area of Hanoi will undergo in another spatial development which also means, the existing urban area will be expanded [6]. One of Hanoi's districts, Nam Tu Liem, will be affected by the said Master Plan, which once was one of Hanoi's suburban areas that was announced to be an urban area in 2013 [7].…”

Section: Introductionmentioning

confidence: 99%

An analysis of land use change and the workers’ perception towards changes from 2007 – 2017: A case in Nam Tu Liem District, Hanoi, Vietnam

Hostalero¹,

Ha²

2019

EES

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Land use change has been assessed widely using Remote Sensing (RS) and Geographic Information System (GIS) techniques. The analysis of land use change was done by detecting land cover change. A study about land cover change, along with the self-employed workers' perception towards changes between 2007 and 2017 were carried out in Nam Tu Liem District, Hanoi, Vietnam.The result of the study shows that the built-up lands have increased and remained to be the dominant land cover types in 2017. The agriculture has been declining mainly due to conversion into built-up land. Other land type including water, bare land, and vegetation have shown slight changes throughout the years. Overall changes from 2007 to 2017 shown that built-up land gained the most and agriculture land lost the most. On the other hand, the perception study's major findings indicate that about two-thirds (69%) of respondents are aware of changes. However, almost one-third (31%) are unaware of the said topic. There are several factors that may affect the awareness of selfemployed workers which will be cursory discussed in the study. This study in Nam Tu Liem District is a first step to determine and understand the major driving factors and their impacts on the land use changes in the area. A detailed land use/cover change study and a larger population size for perception studies are recommended in order for the government to formulate policies to achieve sustainable development.

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Impacts of Land use Changes on Urban Heat Islands in Hanoi, Vietnam: Scenario Analysis

Cited by 9 publications

References 6 publications

The Environmental Effects of Urban Development in Hanoi, Vietnam from Satellite and Meteorological Observations from 1999–2016

The Environmental Effects of Urban Development in Hanoi, Vietnam from Satellite and Meteorological Observations from 1999–2016

Visual Analytics of Volunteered Geographic Information: Detection and Investigation of Urban Heat Islands

An analysis of land use change and the workers’ perception towards changes from 2007 – 2017: A case in Nam Tu Liem District, Hanoi, Vietnam

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