Remote Sensing Technology and Application, Volume. 40, Issue 2, 275(2025)
Temporal and Spatial Variation of Secchi Disc Depth in Hongze Lake based on Landsat-8 OLI and Its Influencing Factors
Figures & Tables(17)
Fig. 2. Line chart of monthly changes in meteorological data from 2013 to 2022
Fig. 3. Line chart of monthly changes in meteorological data from 2013 to 2022
Fig. 8. Spatial distribution of annual average SDD in Hongze Lake from 2013 to 2022
Fig. 9. The annual average SDD of Chengzi Lake Bay， Li River Lake Bay， Huaihe River Bay
Fig. 10. Spatial distribution of monthly average SDD in Hongze Lake during 2013
Fig. 11. The annual average SDD of Chengzi Lake Bay， Li River Lake Bay， Huaihe River Bay
Table 1.
Measured data
Table 2.
OLI band setting and parameter information View tableView in ArticleTable 2.
OLI band setting and parameter information 波段号 波长范围/μm 分辨率/m B1 0.435~0.451 30 B2 0.452~0.512 30 B3 0.533~0.590 30 B4 0.636~0.673 30 B5 0.851~0.879 30 B6 1.566~1.651 30 B7 2.107~2.294 30 B8 0.500~0.680 15 B9 1.360~1.390 30
Table 3.
Inversion model of SDD View tableView in ArticleTable 3.
Inversion model of SDD 波段组合 拟合方程 相关性系数 R2 B2 y = 53 817x3 - 3 243.8x2 + 41.443x + 0.408 2 0.587 0.355 8 B3 y = 14 772x3 - 1 217.3x2 + 11.326x + 0.774 3 0.721 0.538 5 B4 y = -3 169.5x3 + 830.74x2 - 56.12x + 1.280 3 0.790 0.713 8 B5 y = -2E+06x3 + 41 540x2 - 339.45x + 1.102 1 0.747 0.774 1 B2+B3 y = 2 659.4x3 - 408.69x2 + 10.93x + 0.537 7 0.535 0.428 6 B3+B4 y = 1 861.1x3 - 231.59x2 - 3.1414x + 0.950 8 0.744 0.639 7 B4+B5 y = -2 690x3 + 680.59x2 - 49.705x + 1.274 9 0.788 0.731 4 B4/B3 y = -14.48x3 + 36.212x2 - 31.329x + 9.600 5 0.893 0.839 3 B5/B4 y = -109.54x3 + 82.042x2 - 20.401x + 1.900 3 0.593 0.486 9 B5/B3 y = 38.561x2 - 13.002x + 1.298 8 0.716 0.654 8
Table 4.
The fitting equation and correlation of each lake bay and its influencing factors View tableView in ArticleTable 4.
The fitting equation and correlation of each lake bay and its influencing factors 成子湖湾透明度 拟合方程 R² 降水量 y = 0.000 8x + 0.249 6 0.64 风速 y = -0.116 9x + 0.588 9 0.307 6 气温 y = 0.005 4x + 0.244 8 0.410 8 输沙量 y = 0.001 5x + 0.281 9 0.266 7 溧河湖湾透明度 拟合方程 R² 降水量 y = 0.000 4x + 0.225 8 0.362 5 风速 y = -0.085 3x + 0.455 0.384 7 气温 y = 93.2x - 9.3212 0.260 9 输沙量 y = 0.000 7x + 0.241 8 0.375 6 淮河湖湾透明度 拟合方程 R² 降水量 y = -0.000 2x + 0.225 9 0.401 风速 y = 0.013 7x + 0.178 3 0.055 7 气温 y = -0.001 1x + 0.226 2 0.235 7 输沙量 y = -0.000 4x + 0.221 7 0.490 1
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Siyi YANG, Chenggong DU, Miaomiao JIANG. Temporal and Spatial Variation of Secchi Disc Depth in Hongze Lake based on Landsat-8 OLI and Its Influencing Factors[J]. Remote Sensing Technology and Application, 2025, 40(2): 275
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Received: Aug. 17, 2023
Accepted: --
Published Online: May. 23, 2025
The Author Email: Chenggong DU (ducg@hytc.edu.cn)
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