Journal of Geo-information Science, Volume. 22, Issue 5, 1161(2020)
Figures & Tables(11)
Fig. 1. The power function relation between DMSP-OLS and average DN values in corresponding region of NPP-VIIRS for 2012, 2013
Fig. 2. Spatial pattern of DMSP-OLS and NPP-VIIRS simulated data for part of the Beijing-Tianjin-Hebei, part of the Yangtze River Delta, part of the Pearl River Delta in 2012, 2013
Fig. 3. Corrected and simulated nighttime light images in three first-class urban agglomerations from 1992 to 2017
Fig. 4. Urban built-up area extraction results in three first-class urban agglomerations from 1992 to 2017
Fig. 5. Changes in urban spatial expansion scale of three first-class urban agglomerations from 1992 to 2017
Fig. 6. Changes in urban spatial expansion intensity of three first-class urban agglomerations from 1992 to 2017
Fig. 7. Gravity center shift of urban spatial expansion in three first-class urban agglomerations from 1992 to 2017
Fig. 8. Hotspot analysis of urban spatial expansion in three first-class urban agglomerations from 1992 to 2017
Table 1. Regression model coefficients for images mutual correction based on sensors
View tableView in ArticleTable 1. Regression model coefficients for images mutual correction based on sensors
数据集 a b c R F16→F15 -0.001 447 1.091 0.913 0.9309 F15→F14 -0.003 202 1.093 1.766 0.8646 F14→F12 0.003 413 0.628 2.717 0.9564 F12→F10 0.001 906 0.832 0.886 0.9171 F16→F18 0.004 262 0.673 0.766 0.8955
Table 2. Correlation analysis between DMSP-OLS and NPP-VIIRS
View tableView in ArticleTable 2. Correlation analysis between DMSP-OLS and NPP-VIIRS
年份 校正前 校正后 r RMSE r RMSE 2012 0.66 18.8 0.88 5.3 2013 0.67 18.1 0.85 6.1
Table 3. Urban scale and extraction error from integrated nighttime light data (km2,km2,%,km2,%)
View tableView in ArticleTable 3. Urban scale and extraction error from integrated nighttime light data (km2,km2,%,km2,%)
年份 京津冀城市群 长三角城市群 珠三角城市群 统计 全部 差值 仅市 差值 统计 全部 差值 仅市 差值 统计 全部 差值 仅市 差值 1992 1389 1402 0.94 1390 -0.86 1398 1427 2.07 1405 -1.54 464 466 0.43 466 0.00 1995 1452 1464 0.83 1452 -0.82 1576 1643 4.25 1613 -1.83 543 617 13.63 617 0.00 2000 1582 1560 -1.39 1537 -1.47 2166 2174 0.37 2147 -1.24 1073 1086 1.21 1085 -0.09 2005 3032 3046 0.46 2956 -2.95 4959 5008 0.99 4859 -2.98 3111 3119 0.26 3118 -0.03 2010 3564 3770 5.78 3624 -3.87 6897 7225 4.76 6957 -3.71 4236 4532 6.99 4502 -0.66 2015 4231 4254 0.54 4039 -5.05 8096 8329 2.88 8006 -3.88 4809 5243 9.02 5238 -0.10 2017 4653 4765 2.41 4438 -6.86 8777 9560 8.92 9167 -4.11 5068 5514 8.80 5488 -0.47 合计 19 903 20 261 1.80 19 436 -4.07 33 869 35 366 4.42 34154 -3.43 19304 20 577 6.59 20 514 -0.31
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Hesong DONG, Renjie LI, Jianming LI, Shuai LI.
Paper Information
Received: Nov. 23, 2019
Accepted: --
Published Online: Nov. 12, 2020
The Author Email: LI Renjie (lrjgis@hebtu.edu.cn)
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