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Author (down) Zheng, Q.; Jiang, R.; Wang, K.; Huang, L.; Ye, Z.; Gan, M.; Ji, B. url  doi
openurl 
  Title Monitoring the trajectory of urban nighttime light hotspots using a Gaussian volume model Type Journal Article
  Year 2018 Publication International Journal of Applied Earth Observation and Geoinformation Abbreviated Journal International Journal of Applied Earth Observation and Geoinformation  
  Volume 65 Issue Pages 24-34  
  Keywords Remote Sensing  
  Abstract Urban nighttime light hotspot is an ideal representation of the spatial heterogeneity of human activities within a city, which is sensitive to regional urban expansion pattern. However, most of previous studies related to nighttime light imageries focused on extracting urban extent, leaving the spatial variation of radiance intensity insufficiently explored. With the help of global radiance calibrated DMSP-OLS datasets (NTLgrc), we proposed an innovative framework to explore the spatio-temporal trajectory of polycentric urban nighttime light hotspots. Firstly, NTLgrc was inter-annually calibrated to improve the consistency. Secondly, multi-resolution segmentation and region-growing SVM classification were employed to remove blooming effect and to extract potential clusters. At last, the urban hotspots were identified by a Gaussian volume model, and the resulting parameters were used to quantitatively depict hotspot features (i.e., intensity, morphology and centroid dynamics). The result shows that our framework successfully captures hotspots in polycentric urban area, whose Ra2 are over 0.9. Meanwhile, the spatio-temporal dynamics of the hotspot features intuitively reveal the impact of the regional urban growth pattern and planning strategies on human activities. Compared to previous studies, our framework is more robust and offers an effective way to describe hotspot pattern. Also, it provides a more comprehensive and spatial-explicit understanding regarding the interaction between urbanization pattern and human activities. Our findings are expected to be beneficial to governors in term of sustainable urban planning and decision making.  
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  Series Volume Series Issue Edition  
  ISSN 0303-2434 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1771  
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Author (down) Zheng, Q.; Deng, J.; Jiang, R.; Wang, K.; Xue, X.; Lin, Y.; Huang, Z.; Shen, Z.; Li, J.; Shahtahmassebi, A.R. url  doi
openurl 
  Title Monitoring and assessing “ghost cities” in Northeast China from the view of nighttime light remote sensing data Type Journal Article
  Year 2017 Publication Habitat International Abbreviated Journal Habitat International  
  Volume 70 Issue Pages 34-42  
  Keywords Remote Sensing  
  Abstract Urbanization has proceeded at an unprecedented speed in China during the last 20 years, resulting in extensive natural landscapes being transformed into impervious surface. The “ghost city” phenomenon has emerged due to the unreasonable urban expansion which far exceeds the actual demand of human habitat. Previously, few research studies have provided objective and sufficient knowledge with regard to identify “ghost cities” and their spatial distribution. In this paper, we proposed an effective and feasible framework to monitor and evaluate “ghost cities” utilizing nighttime light imagery obtained from day-night band (DNB) of Visible Infrared Imaging Radiometer Suite (VIIRS). We established a “ghost city” index (GCI) to quantify the intensity of the phenomenon in the northeast of China, and analyzed the spatial pattern of “ghost cities” for different GCI classes. Our results indicate that the intensity of “ghost city” phenomenon decrease from regions adjacent to the border to interior areas, whilst regions with extremely high GCI are mostly districts and county cities. Tests of typical regions show that non-lit built-up area for high GCI regions is spatially clustered and low population regions have a high tendency to suffer from the “ghost city” phenomenon. Therefore, our findings provide a spatial-explicit insight into the “ghost city” phenomenon, and consequently can be beneficial to assist sustainable urban planning.  
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  Series Volume Series Issue Edition  
  ISSN 0197-3975 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1773  
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Author (down) Zhen, J.; Pei, T.; Xie, S. url  doi
openurl 
  Title Kriging methods with auxiliary nighttime lights data to detect potentially toxic metals concentrations in soil Type Journal Article
  Year 2019 Publication The Science of the Total Environment Abbreviated Journal Sci Total Environ  
  Volume 659 Issue Pages 363-371  
  Keywords Remote Sensing  
  Abstract The spatial distribution of potentially toxic metals (PTMs) has been shown to be related to anthropogenic activities. Several auxiliary variables, such as those related to remote sensing data (e.g. digital elevation models, land use, and enhanced vegetation index) and soil properties (e.g. pH, soil type and cation exchange capacity), have been used to predict the spatial distribution of soil PTMs. However, these variables are mostly focused on natural processes or a single aspect of anthropogenic activities and cannot reflect the effects of integrated anthropogenic activities. Nighttime lights (NTL) images, a representative variable of integrated anthropogenic activities, may have the potential to reflect PTMs distribution. To uncover this relationship and determine the effects on evaluation precision, the NTL was employed as an auxiliary variable to map the distribution of PTMs in the United Kingdom. In this study, areas with a digital number (DN)>/=50 and an area>30km(2) were extracted from NTL images to represent regions of high-frequency anthropogenic activities. Subsequently, the distance between the sampling points and the nearest extracted area was calculated. Barium, lead, zinc, copper, and nickel concentrations exhibited the highest correlation with this distance. Their concentrations were mapped using distance as an auxiliary variable through three different kriging methods, i.e., ordinary kriging (OK), cokriging (CK), and regression kriging (RK). The accuracy of the predictions was evaluated using the leave-one-out cross validation method. Regardless of the elements, CK and RK always exhibited lower mean absolute error and root mean square error, in contrast to OK. This indicates that using the NTL as the auxiliary variable indeed enhanced the prediction accuracy for the relevant PTMs. Additionally, RK showed superior results in most cases. Hence, we recommend RK for prediction of PTMs when using the NTL as the auxiliary variable.  
  Address State Key Laboratory of Geological Processes and Mineral Resources(GPMR), Faculty of Earth Sciences, China University of Geosciences, Wuhan, 430074, China  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0048-9697 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:30599355 Approved no  
  Call Number GFZ @ kyba @ Serial 2494  
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Author (down) Zheleva, M. url  doi
openurl 
  Title The dark side of light. Light pollution kills leatherback turtle hatchlings Type Journal Article
  Year 2012 Publication Biodiscovery Abbreviated Journal Biodiscovery  
  Volume 3 Issue Pages e8930  
  Keywords Leatherback turtle; animals; reptiles; turtles; marine turtles; light pollution; Tobago  
  Abstract The leatherback turtle is the largest and most migratory of all sea turtles and deepest diving air-breathing animal. It has unique physiology which allows it to adapt to various habitats ranging from sub-polar to equatorial during its migrations. The leatherback turtle is also the only sea turtle where no cases of tumours have been diagnosed. These unique features add to the arguments for preservation of this endangered species. Here we discuss the effect of light pollution on leatherback turtle hatchlings in Tobago and the measures for their protection.  
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  Series Volume Series Issue Edition  
  ISSN 2050-2966 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 76  
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Author (down) Zhe Song and Xiaoming Li url  openurl
  Title Hazards, Causes and Legal Governance Measures of China's Urban Light Pollution Type Journal Article
  Year 2017 Publication Nature Environment and Pollution Technology Abbreviated Journal  
  Volume 16 Issue 3 Pages 975-980  
  Keywords Regulation  
  Abstract Urban light pollution, which poses a threat to people’s production, life, and physical and mental health, is becoming increasingly serious and gradually forms a new type of environmental pollution. In order to further analyse the hazards and causes of China’s urban light pollution and explore its legal governance measures, this study reviews foreign literature on hazards and causes of urban light pollution, summarizes the types and causes of the pollution in China, and provides specific control measures from the perspective of legal governance. Research results in the country and abroad show that light pollution is caused by development, which has a serious negative impact on the normal life of urban residents. The hazards of urban light pollution are manifested in four aspects, such as damaging human health, affecting the natural ecological environment, affecting normal operation of urban traffic, and causing serious waste of energy. Urban light pollution is caused by the lack of systematized urban building light source design work, excessive use of electronic products with the development of science and technology, weak public awareness of environmental protection, and the delay of laws and regulations. Some legal measures to control light pollution are presented as follows: Perfecting the administrative system and environmental supervision system in legislation, innovating the legislation system of light pollution prevention, formulating strict civil liability for light pollution, and further formulating a single law on light pollution control. The results of this study have important reference value for taking measures predictably to avoid the occurrence of light pollution during urban construction design, for the macro-control of urban planning and management departments, and for promoting the concept of urban environmental protection and energy conservation and sustainable urban development.  
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  Notes Approved no  
  Call Number LoNNe @ kyba @; GFZ @ kyba @ Serial 1748  
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