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| Author |
Sangkasem, K.; Puttanapong, N. |
Title  |
Analysis of spatial inequality using DMSP‐OLS nighttime‐light satellite imageries: A case study of Thailand |
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Journal Article |
| Year |
2020 |
Publication |
Regional Science Policy & Practice |
Abbreviated Journal |
Reg Sci Policy Pract. |
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Pages |
in press |
| Keywords |
Remote Sensing |
| Abstract |
Unbalanced regional development has been a persistent concern in Thailand, and satellite imageries can provide alternative data for examining the dynamics of regional development. This study validated the consistency between Defense Meteorological Satellite Program–Operational Linescan System (DMSP‐OLS) nighttime light (NTL) imageries and data from the official nationwide socio‐economic survey. It found that the two sources exhibited a statistically significant correlation in 1994–2013. On the basis of this finding, the NTL index was applied to the computations of the local indicators of spatial association (LISA) and Moran's I statistics. The results for LISA showed that Bangkok and its vicinity were highly concentrated development areas during the study period. However, the obtained Moran's I statistics indicated that the degree of concentration continuously decreased. NTL‐based Gini, Theil, and Atkinson inequality indices were also computed to validate the spatial expansion of regional development. All three NTL‐based indices showed that regional inequality decreased during the study period. |
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UP @ altintas1 @ |
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3341 |
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| Author |
Shi, G.; Jiang, N.; Li, Y.; He, B. |
| Title |
Analysis of the Dynamic Urban Expansion Based on Multi-Sourced Data from 1998 to 2013: A Case Study of Jiangsu Province |
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Journal Article |
| Year |
2018 |
Publication |
Sustainability |
Abbreviated Journal |
Sustainability |
| Volume |
10 |
Issue |
10 |
Pages |
3467 |
| Keywords |
Remote Sensing |
| Abstract |
Recently, with the fast speed of urban expansion, research concerning the regulation of urban built-up area expansion is a significant topic, especially in Eastern China with its high urbanization level. The Defense Meteorological Satellite Program’s Operational Linescan System (DMSP/OLS) nighttime light data has a high association with the urban-rural distribution, which provides a new method to study urban expansion effectively and with relatively high accuracy. Between 1998 and 2013, China experienced a rapid economic development period, making it crucial to learn the patterns and driving forces to better manage urban master planning and sustainable development. The urban built-up area for the research years are mapped, and the annual urban expansion speed, urbanization intensity index, and built-up area gravity center are analyzed in this paper. The results will show that the amount of the urban built-up area grows continuously from 1998 to 2008, with the development focus in southern Jiangsu, while from 2008 to 2013, the development center moves to northern Jiangsu. The main driving forces behind this urban built-up area expansion are population growth and economic development. |
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2071-1050 |
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GFZ @ kyba @ |
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2018 |
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Sung, C. Y., & Kim, Y.-J. |
| Title |
Analysis of the Status of Light Pollution and its Potential Effect on Ecosystem of the Deogyusan National Park |
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Journal Article |
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2020 |
Publication |
Korean Journal of Environment and Ecology |
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34 |
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1 |
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63-71 |
| Keywords |
Conservation; Ecology; Remote Sensing |
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This study characterized the spatial and seasonal patterns of light pollution in the Deogyusan National Park and examined the potential effects of light pollution on ecosystems in the park using light intensities derived from VIIRS (Visible Infrared Imaging Radiometer Suite) DNB (Day and Night Band) nightlight images collected in January and August 2018. Results showed that the Muju Deogyusan resort had the greatest light intensity than other sources of light pollution in the park, and light intensity of the resort was much higher in January than in August, suggesting that artificial lights in ski slopes and facilities were the major source of light pollution in the park. An analysis of an urban-natural light pollution gradient along a neighboring urban area through the inside of the park indicated that light radiated from a light pollution source permeated for up to 1km into the adjacent area and contaminated the edge area of the park. Of the legally protected species whose distributions were reported in literature, four mammals (Martes flavigula, Mustela nivalis, Prionailurus bengalensis, Pteromys volans aluco), two birds (Falco subbuteo, Falco tinnunculus), and nine amphibians and reptiles (Onychodactylus koreanus, Hynobius leechii, Karsenia koreana, Rana dybowskii, Rana huanrenensis, Elaphe dione, Rhabdophis tigrinus, Gloydius ussuriensis, Gloydius saxatilis) inhabited light-polluted areas. Of those species inhabiting light-polluted areas, nocturnal species, such as Prionailurus bengalensis and Pteromys volans aluco, in particular, were vulnerable to light pollution. These results implied that protecting ecosystems from light pollution in national parks requires managing nighttime light in the parks and surrounding areas and making a plan to manage nighttime light pollution by taking into account ecological characteristics of wild animals in the parks. |
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IDA @ intern @ |
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2948 |
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Wang, C.; Chen, Z.; Yang, C.; Li, Q.; Wu, Q.; Wu, J.; Zhang, G.; Yu, B. |
| Title |
Analyzing parcel-level relationships between Luojia 1-01 nighttime light intensity and artificial surface features across Shanghai, China: A comparison with NPP-VIIRS data |
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Journal Article |
| Year |
2020 |
Publication |
International Journal of Applied Earth Observation and Geoinformation |
Abbreviated Journal |
International Journal of Applied Earth Observation and Geoinformation |
| Volume |
85 |
Issue |
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Pages |
101989 |
| Keywords |
Remote Sensing |
| Abstract |
Nighttime light (NTL) remote sensing data have been widely used to derive socioeconomic indices at national and regional scales. However, few studies analyzed the factors that may explain NTL variations at a fine scale due to the limited resolution of existing NTL data. As a new generation NTL satellite, Luojia 1-01 provides NTL data with a finer spatial resolution of ∼130 m and can be used to assess the relationship between NTL intensity and artificial surface features on an unprecedented scale. This study represents the first efforts to assess the relationship between Luojia 1-01 NTL intensity and artificial surface features at the parcel level in comparison to the Suomi National Polar-orbiting Partnership-Visible Infrared Imaging Radiometer Suite (NPP-VIIRS) NTL data. Points-of-interest (POIs) and land-use/land-cover (LULC) data were used in random forest (RF) regression models for both Luojia 1-01 and NPP-VIIRS to analyze the feature contribution of artificial surface features to NTL intensity. The results show that luminosity variations in Luojia 1-01 data for different land-use types were more significant than those in NPP-VIIRS data because of the finer spatial resolution and wider measurement range. Seventeen variables extracted from POI and LULC data explained the Luojia 1-01 and NPP-VIIRS NTL intensity, with a good out-of-bag score of 0.62 and 0.76, respectively. Moreover, Luojia 1-01 data had fewer “blooming” phenomena than NPP-VIIRS data, especially for cropland, water body, and rural area. Luojia 1-01 is more suitable for estimating socioeconomic activities and can attain more comprehensive information on human activities, since the feature contribution of POI variables is more sensitive to NTL intensity in the Luojia 1-01 RF regression model than that in the NPP-VIIRS RF regression model. |
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0303-2434 |
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GFZ @ kyba @ |
Serial |
2745 |
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| Author |
Xia, C.; Yeh, A.G.-O.; Zhang, A. |
| Title |
Analyzing spatial relationships between urban land use intensity and urban vitality at street block level: A case study of five Chinese megacities |
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Journal Article |
| Year |
2020 |
Publication |
Landscape and Urban Planning |
Abbreviated Journal |
Landscape and Urban Planning |
| Volume |
193 |
Issue |
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Pages |
103669 |
| Keywords |
Remote Sensing |
| Abstract |
Urban sprawl in urbanizing China has resulted in a series of ecological and environmental problems. Urban planners have been committed to promoting compact development through high-density and mixed land use. However, a problem brought by such compact urban form is the mismatch between physical spaces and socio-economic activities. To date, minimal research has been conducted using spatial statistics to study this issue at the local scales. Moreover, urban night-time vitality has been consistently ignored in existing studies. In the current work, urban land use intensity was analyzed on the basis of street block density and typology, and urban daytime and night-time vitality were measured using small catering business and night-time light data, respectively. The spatial relationships between urban land use intensity and urban vitality were investigated using a local indicator of spatial association (LISA), and five megacities in China were taken as a case study to examine whether variations exist between different cities. Results showed a significant positive spatial autocorrelation between urban land use intensity and urban vitality according to global statistics. Therefore, socio-economic activities are more likely to be abundant in densely developed urban areas. However, local spatial mismatches were found in the five megacities, indicating overcrowded or underutilized urban spaces in all the cities. These relationships were associated with different urban areas (urbanized before 1995 and during 1995–2015), land use conditions (function and mixture) and time periods (day and night). The results of this work will provide a comprehensive understanding of compact city and sustainability. |
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0169-2046 |
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GFZ @ kyba @ |
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2697 |
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