| Records |
| Author |
Ou, J.; Liu, X.; Li, X.; Li, M.; Li, W. |
| Title |
Evaluation of NPP-VIIRS Nighttime Light Data for Mapping Global Fossil Fuel Combustion CO2 Emissions: A Comparison with DMSP-OLS Nighttime Light Data |
Type |
Journal Article |
| Year |
2015 |
Publication |
PloS one |
Abbreviated Journal |
PLoS One |
| Volume |
10 |
Issue |
9 |
Pages  |
e0138310 |
| Keywords |
Remote Sensing |
| Abstract |
Recently, the stable light products and radiance calibrated products from Defense Meteorological Satellite Program's (DMSP) Operational Linescan System (OLS) have been useful for mapping global fossil fuel carbon dioxide (CO2) emissions at fine spatial resolution. However, few studies on this subject were conducted with the new-generation nighttime light data from the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor on the Suomi National Polar-orbiting Partnership (NPP) Satellite, which has a higher spatial resolution and a wider radiometric detection range than the traditional DMSP-OLS nighttime light data. Therefore, this study performed the first evaluation of the potential of NPP-VIIRS data in estimating the spatial distributions of global CO2 emissions (excluding power plant emissions). Through a disaggregating model, three global emission maps were then derived from population counts and three different types of nighttime lights data (NPP-VIIRS, the stable light data and radiance calibrated data of DMSP-OLS) for a comparative analysis. The results compared with the reference data of land cover in Beijing, Shanghai and Guangzhou show that the emission areas of map from NPP-VIIRS data have higher spatial consistency of the artificial surfaces and exhibit a more reasonable distribution of CO2 emission than those of other two maps from DMSP-OLS data. Besides, in contrast to two maps from DMSP-OLS data, the emission map from NPP-VIIRS data is closer to the Vulcan inventory and exhibits a better agreement with the actual statistical data of CO2 emissions at the level of sub-administrative units of the United States. This study demonstrates that the NPP-VIIRS data can be a powerful tool for studying the spatial distributions of CO2 emissions, as well as the socioeconomic indicators at multiple scales. |
| Address |
School of Geography and Planning, and Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou, China |
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English |
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1932-6203 |
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| Notes |
PMID:26390037; PMCID:PMC4577086 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2272 |
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| Author |
Zhang, F.-S.; Wang, Y.; Wu, K.; Xu, W.-Y.; Wu, J.; Liu, J.-Y.; Wang, X.-Y.; Shuai, L.-Y. |
| Title |
Effects of artificial light at night on foraging behavior and vigilance in a nocturnal rodent |
Type |
Journal Article |
| Year |
2020 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
Science of The Total Environment |
| Volume |
In press |
Issue |
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Pages |
138271 |
| Keywords |
Animals |
| Abstract |
Artificial light at night has greatly changed the physical environment for many organisms on a global scale. As an energy efficient light resource, light emitting diodes (LEDs) have been widely used in recent years. As LEDs often have a broad spectrum, many biological processes may be potentially affected. In this study, we conducted manipulated experiments in rat-proof enclosures to explore the effects of LED night lighting on behavior of a nocturnal rodent, the Mongolian five-toed jerboa (Allactaga sibirica). We adopted the giving-up density (GUD) method and camera video trapping to study behavioral responses in terms of patch use, searching efficiency and vigilance. With the presence of white LED lighting, jerboas spent less time in patches, foraged less intensively (with higher GUDs) and became vigilant more frequently, while their searching efficiency was higher than under dark treatment. Although both positive and negative effects of LEDs on foraging were detected, the net effect of LEDs on jerboas is negative, which may further translate into changes in population dynamics, inter-specific interaction and community structure. This is the first study to explore the effects of LED lighting on foraging behavior and search efficiency in rodents with the potential positive effects of using artificial light regimes as a pest management tool. |
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0048-9697 |
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no |
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GFZ @ kyba @ |
Serial |
2877 |
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| Author |
Pan, J.; Yang, Y.; Yang, B.; Dai, W.; Yu, Y. |
| Title |
Human-Friendly Light-Emitting Diode Source Stimulates Broiler Growth |
Type |
Journal Article |
| Year |
2015 |
Publication |
PloS one |
Abbreviated Journal |
PLoS One |
| Volume |
10 |
Issue |
8 |
Pages |
e0135330 |
| Keywords |
Animals |
| Abstract |
Previous study and our laboratory have reported that short-wavelength (blue and green) light and combination stimulate broiler growth. However, short-wavelength stimuli could have negative effects on poultry husbandry workers. The present study was conducted to evaluate the effects of human-friendly yellow LED light, which is acceptable to humans and close to green light, on broiler growth. We also aimed to investigate the potential quantitative relationship between the wavelengths of light used for artificial illumination and growth parameters in broilers. After hatching, 360 female chicks (“Meihuang” were evenly divided into six lighting treatment groups: white LED strips (400-700 nm, WL); red LED strips (620 nm, RL); yellow LED strips (580 nm, YL); green LED strips (514 nm, GL); blue LED strips (455 nm, BL); and fluorescent strips (400-700 nm, FL). From 30 to 72 days of age, broilers reared under YL and GL were heavier than broilers treated with FL (P < 0.05). Broilers reared under YL obtained the similar growth parameters with the broilers reared under GL and BL (P > 0.05). Moreover, YL significantly improved feeding efficiency when compared with GL and BL at 45 and 60 days of age (P < 0.05). In addition, we found an age-dependent effect of light spectra on broiler growth and a quantitative relationship between LED light spectra (455 to 620 nm) and the live body weights of broilers. The wavelength of light (455 to 620 nm) was found to be negatively related (R2 = 0.876) to live body weight at an early stage of development, whereas the wavelength of light (455 to 620 nm) was found to be positively correlated with live body weight (R2 = 0.925) in older chickens. Our results demonstrated that human-friendly yellow LED light (YL), which is friendly to the human, can be applied to the broilers production. |
| Address |
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China |
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English |
Summary Language |
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1932-6203 |
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| Notes |
PMID:26270988 |
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no |
| Call Number |
LoNNe @ kyba @ |
Serial |
1241 |
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| Author |
Kozaki, T.; Hidaka, Y.; Takakura, J.-Y.; Kusano, Y. |
| Title |
Salivary melatonin suppression under 100-Hz flickering blue light and non-flickering blue light conditions |
Type |
Journal Article |
| Year |
2020 |
Publication |
Neuroscience Letters |
Abbreviated Journal |
Neurosci Lett |
| Volume |
722 |
Issue |
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Pages |
134857 |
| Keywords |
Human Health; Flickering light; Intrinsically photosensitive retinal ganglion cell; Light; Light emitting diode; Melatonin |
| Abstract |
Bright light at night has been known to suppress melatonin secretion. Photoreceptors, known as intrinsically photosensitive retinal ganglion cells (ipRGCs), project dark/bright information into the superchiasmatic nucleus, which regulates the circadian system. Electroretinograms of ipRGCs show fluctuation that is synchronized with light ON-OFF stimulation. This finding suggests that the flickering condition of light may have an impact on our circadian system. In this study, we evaluate light-induced melatonin suppression under flickering and non-flickering light conditions. Fifteen male subjects between the ages of 20 and 23 years (mean +/- SD, 21.9 +/- 1.9) were exposed to three light conditions (dim, 100-Hz flickering and non-flickering light) from 1:00 a.m. to 2:30 a.m. Saliva samples were taken just before 1:00 and at 1:15, 1:30, 2:00, and 2:30 a.m. Repeated-measure t-test with Bonferroni correction showed a significant decrease in melatonin levels under both 100-Hz and non-flickering light conditions compared to dim light conditions after 2:00 a.m. Moreover, at 2:30 a.m., the rate of change in melatonin level under 100 Hz of flickering light was significantly lower than that under non-flickering light. Our present findings suggest that 100-Hz flickering light may suppress melatonin secretion more than non-flickering light. |
| Address |
Department of Health and Nutrition Sciences, Nishikyushu University, 4490-9 Osaki, Kanzaki, Japan |
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English |
Summary Language |
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Edition |
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| ISSN |
0304-3940 |
ISBN |
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| Notes |
PMID:32097701 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2855 |
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| Author |
Xue, X.; Lin, Y.; Zheng, Q.; Wang, K.; Zhang, J.; Deng, J.; Abubakar, G.A.; Gan, M. |
| Title |
Mapping the fine-scale spatial pattern of artificial light pollution at night in urban environments from the perspective of bird habitats |
Type |
Journal Article |
| Year |
2019 |
Publication |
The Science of the Total Environment |
Abbreviated Journal |
Sci Total Environ |
| Volume |
702 |
Issue |
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Pages |
134725 |
| Keywords |
Remote Sensing; Animals; ALAN pollution; Circuitscape; Land cover; Nighttime light image; Urban ecology |
| Abstract |
The increase in artificial light at night (ALAN) is a global concern, while the pattern of ALAN pollution inside urban areas has not yet been fully explored. To fill this gap, we developed a novel method to map fine-scale ALAN pollution patterns in urban bird habitats using high spatial resolution ALAN satellite data. First, an ALAN pollution map was derived from JL1-3B satellite images. Then, the core habitat nodes (CHNs) representing the main habitats for urban birds to inhabit were identified from the land cover map, which was produced using Gaofen2 (GF2) data, and the high probability corridors (HPCs), indicating high connectivity paths, were derived from Circuitscape software. Finally, the ALAN patterns in the CHNs and HPCs were analysed, and the mismatch index was proposed to evaluate the trade-off between human activity ALAN demands and ALAN supply for the protection of urban birds. The results demonstrated that 115 woodland patches covering 4149.0ha were selected as CHNs, and most of the CHNs were large urban parks or scenic spots located in the urban fringe. The 2923 modelled HPCs occupying 1179.2ha were small remaining vegetation patches and vegetated corridors along the major transport arteries. The differences in the ALAN pollution patterns between CHNs and HPCs were mainly determined by the characteristics of the green space patches and the light source types. The polluted regions in the CHNs were clustered in a few regions that suffered from concentrated and intensive ALAN, while most of the CHNs remained unaffected. In contrast, the 727 HPCs were mainly polluted by street lighting was scattered and widely distributed, resulting a more varying influence to birds than that in the CHNs. Relating patterns of the ALAN to bird habitats and connectivity provides meaningful information for comprehensive planning to alleviate the disruptive effects of ALAN pollution. |
| Address |
College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, Zhejiang, China. Electronic address: ganmuye@zju.edu.cn |
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English |
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0048-9697 |
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| Notes |
PMID:31734607 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2765 |
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