Quantifying urban growth patterns in Hanoi using landscape expansion modes and time series spatial metrics

Nong, Duong H.; Lepczyk, Christopher A.; Miura, Tomoaki; Fox, Jefferson

doi:10.1371/journal.pone.0196940

Cited by 61 publications

(45 citation statements)

References 40 publications

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“…Issues that are related to urbanization in Hanoi are multi-faceted and many problems related to urban transition still require additional research [8]. 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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“…Leapfrog, also called enclave, spontaneous, or outlying growth, referred to developed patches that were converted from non-developed patches outside of, and disconnected from, the existing urban built-up land (Figure 4c) [44,46,49,50]. These three urban growth processes may, of course, concur, but the intensity of each type varied in different urbanization cycles and, thus, defined urban growth phases at each time point [51,52]. developed patches that were converted from non-developed patches outside of, and disconnected from, the existing urban built-up land (Figure 4c) [44,46,49,50].…”

Section: Landsat Mss 1980mentioning

confidence: 99%

“…developed patches that were converted from non-developed patches outside of, and disconnected from, the existing urban built-up land (Figure 4c) [44,46,49,50]. These three urban growth processes may, of course, concur, but the intensity of each type varied in different urbanization cycles and, thus, defined urban growth phases at each time point [51,52]. In order to quantify the distribution of these three urban expansion types for Tianjin, we employed a landscape expansion index (LEI), which was introduced by Xiaoping Liu [44], and ascribed newly added urban land patches to different growth types according to the following formula:…”

Section: Landsat Mss 1980mentioning

confidence: 99%

Edge-Urbanization: Land Policy, Development Zones, and Urban Expansion in Tianjin

2019

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Fast-paced urban growth in China has produced a specific, transient form of urban periphery, which continuously shifts outwards as the city expands. Seeing this process as a distinctive type of (sub)urbanization, this paper encapsulates it under the notion of edge-urbanization. The paper argues that edge-urbanization in China is fueled by deliberate government policies, which seek to mobilize peripheral land for high-growth strategies. The relationships between urban expansions and spatial economic policy are analyzed more closely in the case of Tianjin. Geospatial analysis derived from satellite imagery for the period of 1980–2015 reveals the morphological and temporal dynamics of urban growth in the post-reform era. Built-up land in Tianjin has expanded 1.8 times during this period, with the dominant growth type being edge-expansion. This character of urban expansion is shown to be closely associated with government’s “project fever”—setting up development zones and new economic activity on city edge. The results demonstrate a decisive role of the state in shaping (edge) urbanization in China’s major cities.

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“…The study was conducted to examine composition and configuration of forested landscape in the central highlands of Ethiopia using satellite images of over a period of four decades, and FRAGSTAT raster dataset was used to analyze fragmentation. Nong et al (2014) investigated urban growth patterns of the Hanoi capital City of Vietnam from 1993-2001 which to quantify the speed, growth modes, and resultant changes in landscape pattern of urbanization and examine the diffusion-coalescence and the landscape structural homogenization processes in Hanoi. Through the landscape pattern analysis and comparison with other cities, the result show that the urbanization in Hanoi is limited by its infrastructure systems which make the urban growth not evenly distributed, limiting their competitive advantage disproportionately high transport cost, growing congestion and land market distortions.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Land Use Pattern Changes in Mukim Pengerang, Johor, Malaysia

Man

Salihin

2018

Geoplanning: Journal of Geomatics and Planning

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Urbanization and urban land-use transition have a competitive environment to ensure and provide good facilities for citizen benefit. The landscape patterns resulting from urbanization effect processes at local, regional, and global scales. Quantifying the spatiotemporal pattern of urbanization is important for understanding its ecological impacts and can provide basic information for appropriate decision-making. The growth of urbanization in Mukim Pengerang, Johor, has undergone rapid changes in agriculture, settlements, townships and various activities. The changes of land use take place in Mukim Pengerang due to the rapid economic development, especially in industrializations which are Refinery and Petrochemical Integrated Development (RAPID) project and Pengerang Integrated Petroleum Complex (PIPC). The industrialization boosts the growth in land property and commercial which progressing in rapid development since the year 2012, in resulting whether it can give good, bad or both impact to the human and surrounding. Therefore, the main aim of this paper is to quantify the changes in landscape pattern or land use pattern between the year 2008 and 2017 occurred in Mukim Pengerang. In monitoring the spatial pattern changes, and the changes of landscape structure, the metrics landscape were analyzed with determination of the Shanon Diversity Index (SHDI), the number of patches (NP), Edge Density (ED) and Total Edge (TE) in the period of 8 years. The results show that the changes occurred with the three types of land use showed significant changes in the types of land use which are forest, agricultural and built-up area. The result of SHDI analysis shows the increment value between the year 2008 and 2017. This situation illustrates that the higher value of SHDI for an area, resulting in the higher level of land use. This is because the growing pattern of land use is reflected by a large number of patches due to the diversification of land use activities in the area. As a result, from the metrics statistics test verifies there was a significant change in land use that took place within 8 years.

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Quantifying urban growth patterns in Hanoi using landscape expansion modes and time series spatial metrics

Cited by 61 publications

References 40 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

Edge-Urbanization: Land Policy, Development Zones, and Urban Expansion in Tianjin

Analyzing Land Use Pattern Changes in Mukim Pengerang, Johor, Malaysia

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