Acta Prataculturae Sinica ›› 2023, Vol. 32 ›› Issue (8): 28-39.DOI: 10.11686/cyxb2022385
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Fang LI1(), Guang-jun WANG1(), Hai-bo DU2, Meng LI1, Si-hai LIANG3, Hong-ming PENG4,5
Received:
2022-09-27
Revised:
2022-12-09
Online:
2023-08-20
Published:
2023-06-16
Contact:
Guang-jun WANG
Fang LI, Guang-jun WANG, Hai-bo DU, Meng LI, Si-hai LIANG, Hong-ming PENG. Integrating MODIS and Landsat data to reconstruct the Landsat NDVI of a typical region in the Qinghai Lake Basin and changes in the intra-annual NDVI maximum[J]. Acta Prataculturae Sinica, 2023, 32(8): 28-39.
年份 Year | 参与融合的左右影像(MODIS日) Left and right images involved in fusion (MODIS day) | 预测目标Landsat影像日期 Predict the target Landsat image data |
---|---|---|
2001 | 152(06-02), 169(06-18) | 06-10 |
185(07-04), 233(08-21) | 08-02 | |
240(08-28), 281(10-08) | 09-04 | |
2005 | 164(06-13), 180(06-29) | 06-25 |
196(07-15), 235(08-23) | 07-21 | |
251(09-08), 260(09-17) | 09-13 | |
2009 | 175(06-24), 198(07-17) | 06-28 |
207(07-26), 223(08-11) | 08-05 | |
239(08-27), 271(09-28) | 09-22 | |
2011 | 165(06-14), 188(07-07) | 06-30 |
197(07-16), 213(08-01) | 07-24 | |
220(08-08), 236(08-24) | 08-16 | |
252(09-09), 277(10-04) | 09-25 | |
2014 | 157(06-06), 196(07-15) | 07-04 |
205(07-24), 260(09-17) | 07-31 | |
2016 | 186(07-04), 202(07-20) | 07-15 |
211(07-29), 250(09-06) | 08-07 | |
259(09-15), 275(10-01) | 09-20 | |
2019 | 162(06-11), 203(07-22) | 07-05 |
226(08-14), 258(09-15) | 08-30 | |
274(10-01), 290(10-17) | 10-09 | |
2020 | 181(06-29), 222(08-09) | 07-25 |
238(08-25), 254(09-10) | 09-04 | |
261(09-17), 277(10-03) | 09-23 |
Table 1 Reference image and prediction image information
年份 Year | 参与融合的左右影像(MODIS日) Left and right images involved in fusion (MODIS day) | 预测目标Landsat影像日期 Predict the target Landsat image data |
---|---|---|
2001 | 152(06-02), 169(06-18) | 06-10 |
185(07-04), 233(08-21) | 08-02 | |
240(08-28), 281(10-08) | 09-04 | |
2005 | 164(06-13), 180(06-29) | 06-25 |
196(07-15), 235(08-23) | 07-21 | |
251(09-08), 260(09-17) | 09-13 | |
2009 | 175(06-24), 198(07-17) | 06-28 |
207(07-26), 223(08-11) | 08-05 | |
239(08-27), 271(09-28) | 09-22 | |
2011 | 165(06-14), 188(07-07) | 06-30 |
197(07-16), 213(08-01) | 07-24 | |
220(08-08), 236(08-24) | 08-16 | |
252(09-09), 277(10-04) | 09-25 | |
2014 | 157(06-06), 196(07-15) | 07-04 |
205(07-24), 260(09-17) | 07-31 | |
2016 | 186(07-04), 202(07-20) | 07-15 |
211(07-29), 250(09-06) | 08-07 | |
259(09-15), 275(10-01) | 09-20 | |
2019 | 162(06-11), 203(07-22) | 07-05 |
226(08-14), 258(09-15) | 08-30 | |
274(10-01), 290(10-17) | 10-09 | |
2020 | 181(06-29), 222(08-09) | 07-25 |
238(08-25), 254(09-10) | 09-04 | |
261(09-17), 277(10-03) | 09-23 |
斜率Slope | 变化趋势等级Grade of variation trend | 占总面积百分比Percentage of total area (%) |
---|---|---|
Slope≤-0.0005 | 显著减少Significant decrease | |
-0.0005<Slope≤-0.0002 | 轻度减少Insignificant decrease | |
-0.0002<Slope≤0.0002 | 基本稳定No change | 26.97 |
0.0002<Slope≤0.0005 | 轻度增加Insignificant increase | 36.67 |
Slope>0.0005 | 显著增加Significant increase | 28.33 |
Table 2 Grading of change trend and area proportion in the study area
斜率Slope | 变化趋势等级Grade of variation trend | 占总面积百分比Percentage of total area (%) |
---|---|---|
Slope≤-0.0005 | 显著减少Significant decrease | |
-0.0005<Slope≤-0.0002 | 轻度减少Insignificant decrease | |
-0.0002<Slope≤0.0002 | 基本稳定No change | 26.97 |
0.0002<Slope≤0.0005 | 轻度增加Insignificant increase | 36.67 |
Slope>0.0005 | 显著增加Significant increase | 28.33 |
变异系数CV | 变异程度 Degree of variation | 占总面积百分比Percentage of total area (%) |
---|---|---|
0<CV≤0.1 | 非常稳定High stabilization | |
0.1<CV≤0.2 | 稳定Stabilization | 53.42 |
0.2<CV≤0.3 | 波动Fluctuation | 32.70 |
CV>0.3 | 剧烈波动High fluctuation |
Table 3 Coefficient of variation (CV) classification and area proportion in the study area
变异系数CV | 变异程度 Degree of variation | 占总面积百分比Percentage of total area (%) |
---|---|---|
0<CV≤0.1 | 非常稳定High stabilization | |
0.1<CV≤0.2 | 稳定Stabilization | 53.42 |
0.2<CV≤0.3 | 波动Fluctuation | 32.70 |
CV>0.3 | 剧烈波动High fluctuation |
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