Journal of Atmospheric and Environmental Optics, Volume. 18, Issue 6, 602(2023)
Influence of urban development on surface heat island effect and its relationship: A case of Hefei and Nanchang
Figures & Tables(14)
Fig. 2. Area and population change curve of built-up areas in Hefei and Nanchang from 2000 to 2020
Fig. 3. Industrial structure change curve of Hefei and Nanchang from 2000 to 2020
Fig. 4. Grade distribution map of heat island effect in Hefei urban area from 2000 to 2020
Fig. 5. Grade distribution map of heat island effect in Nanchang urban area from 2000 to 2020
Table 1. Data sources of Hefei and Nanchang
View tableView in ArticleTable 1. Data sources of Hefei and Nanchang
City Satellites and sensors Date Hefei
Landsat-5 TM
Landsat-7 ETM+
Landsat-8 OLI-TIRS
2000-04-08 2006-04-17 2010-04-28 2015-04-26 2020-04-15 Nanchang
Landsat-5 TM
Landsat-8 OLI-TIRS
2000-04-16
2006-04-17
2010-03-19
2015-03-17
2020-04-15
Table 2. Classification of heat island effect
View tableView in ArticleTable 2. Classification of heat island effect
Heat island effect level Normalized difference temperature value Level 1 non heat island effect district 0.00～0.25 Level 2 heat island effect transition district 0.25～0.50 Level 3 heat island effect district 0.50～0.75 Level 4 high heat island effect district 0.75～1.00
Table 3. The selected driving factors of geodetector
View tableView in ArticleTable 3. The selected driving factors of geodetector
Variable Symbol Proportion of heat island area y Population density x1 Built up area x2 Proportion of secondary industry x3 Proportion of tertiary industry x4 Per capita GDP x5
Table 4. Elasticity coefficient of urban expansion in built-up areas of Hefei and Nanchang from 2000 to 2020
View tableView in ArticleTable 4. Elasticity coefficient of urban expansion in built-up areas of Hefei and Nanchang from 2000 to 2020
Time SHefei SNanchang PHefei PNanchang RHefei RNanchang 2000―2006 16.62 14.03 9.75 8.92 1.70 1.57 2006―2010 25.29 7.92 23.31 5.93 1.08 1.34 2010―2015 22.46 16.12 17.99 10.68 1.25 1.51 2015―2020 5.01 22.48 8.98 14.05 0.56 1.60
Table 5. Area change of surface heat island effect in Hefei from 2000 to 2020
View tableView in ArticleTable 5. Area change of surface heat island effect in Hefei from 2000 to 2020
Time Area of heat island effect level/km2 Heat island effect area/km2 Level 1 Level 2 Level 3 Level 4 2000 10.06 70.24 30.78 14.39 45.17 2006 5.13 147.79 50.32 28.45 80.56 2010 25.15 162.94 86.26 80.47 171.04 2015 32.74 165.18 101.72 130.62 232.34 2020 53.47 148.79 123.98 227.63 351.61
Table 6. Area change of surface heat island effect in Nanchang from 2000 to 2020
View tableView in ArticleTable 6. Area change of surface heat island effect in Nanchang from 2000 to 2020
Time Area of heat island effect level/km2 Heat island effect area/km2 Level 1 Level 2 Level 3 Level 4 2000 5.21 70.19 33.24 7.20 40.80 2006 4.31 109.67 70.44 15.49 85.93 2010 4.56 92.36 100.57 34.05 134.62 2015 4.40 119.67 133.88 54.26 190.23 2020 4.80 146.12 194.30 79.37 274.07
Table 7. Factor detection result
View tableView in ArticleTable 7. Factor detection result
Influence factor x1 x2 x3 x4 x5 qHefei 0.891 0.842 0.679 0.582 0.788 Pearson coefficient 0.965** 0.853** 0.755** 0.727** 0.912** Fitting model Logarithm Linear Quadratic Quadratic Logarithm qNanchang 0.844 0.810 0.711 0.636 0.773 Pearson coefficient 0.972** 0.823** 0.812** 0.834** 0.923** Fitting model Logarithm Linear Quadratic Quadratic Linear
Table 8. Interactive detection result of Hefei
View tableView in ArticleTable 8. Interactive detection result of Hefei
q(A∩B) Compare Explain q(x1∩x2) = 0.924 Max[q(x1), q(x2) ]<q(x1∩x2)<q(x1)+q(x2) Linear enhancement q(x1∩x3) = 0.917 Max[q(x1), q(x3) ]<q(x1∩x3)<q(x1)+q(x3) q(x1∩x4) = 0.902 Max[q(x1), q(x4) ]<q(x1∩x4)<q(x1)+q(x4) q(x1∩x5) = 0.921 Max[q(x1), q(x5) ]<q(x1∩x5)<q(x1)+q(x5) q(x2∩x3) = 0.857 Max[q(x2), q(x3) ]<q(x2∩x3)<q(x2)+q(x3) q(x2∩x4) = 0.850 Max[q(x2), q(x4) ]<q(x2∩x4)<q(x2)+q(x4) q(x2∩x5) = 0.874 Max[q(x2), q(x5) ]<q(x2∩x5)<q(x2)+q(x5) q(x3∩x4) = 0.694 Max[q(x3), q(x4) ]<q(x3∩x4)<q(x3)+q(x4) q(x3∩x5) = 0.819 Max[q(x3), q(x5) ]<q(x3∩x5)<q(x3)+q(x5) q(x4∩x5) = 0.806 Max[q(x4), q(x5) ]<q(x4∩x5)<q(x4)+q(x5)
Table 9. Interactive detection result of Nanchang
View tableView in ArticleTable 9. Interactive detection result of Nanchang
q(A∩B) Compare Explain q(x1∩x2) = 0.872 Max[q(x1), q(x2) ]<q(x1∩x2)<q(x1)+q(x2) Linear enhancement q(x1∩x3) = 0.858 Max[q(x1), q(x3) ]<q(x1∩x3)<q(x1)+q(x3) q(x1∩x4) = 0.850 Max[q(x1), q(x4) ]<q(x1∩x4)<q(x1)+q(x4) q(x1∩x5) = 0.882 Max[q(x1), q(x5) ]<q(x1∩x5)<q(x1)+q(x5) q(x2∩x3) = 0.856 Max[q(x2), q(x3) ]<q(x2∩x3)<q(x2)+q(x3) q(x2∩x4) = 0.851 Max[q(x2), q(x4) ]<q(x2∩x4)<q(x2)+q(x4) q(x2∩x5) = 0.865 Max[q(x2), q(x5) ]<q(x2∩x5)<q(x2)+q(x5) q(x3∩x4) = 0.683 Max[q(x3), q(x4) ]<q(x3∩x4)<q(x3)+q(x4) q(x3∩x5) = 0.807 Max[q(x3), q(x5) ]<q(x3∩x5)<q(x3)+q(x5) q(x4∩x5) = 0.798 Max[q(x4), q(x5) ]<q(x4∩x5)<q(x4)+q(x5)
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Liangliang SHENG, Shuang HAO, Yuhuan CUI, Pengfei LI, Yazhou XU, Congcong LIAO. Influence of urban development on surface heat island effect and its relationship: A case of Hefei and Nanchang[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(6): 602
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Received: Aug. 8, 2022
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Published Online: Dec. 22, 2023
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