Characteristics of Remote Sensing Response from SAR Images and Time Series Analysis of Forest Burned Area

Xinyu HUANG; Rui SUN; Yufei XU

doi:10.11873/j.issn.1004-0323.2025.3.0509

Remote Sensing Technology and Application, Volume. 40, Issue 3, 509(2025)

Characteristics of Remote Sensing Response from SAR Images and Time Series Analysis of Forest Burned Area

Xinyu HUANG^1,2, Rui SUN^1,2,3、*, and Yufei XU^1,2

¹State Key Laboratory of Remote Sensing and Digital Earth， Faculty of Geographical Science， Beijing Normal University， Beijing100875， China

²Beijing Engineering Research Center for Global Land Remote Sensing Products， Institute of Remote Sensing Science and Engineering， Faculty of Geographical Science， Beijing Normal University， Beijing100875， China

³Faculty of Arts and Sciences， Beijing Normal University， Zhuhai519085， China

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Figures & Tables(10)

Fig. 1. Location of study areas of forest fire cases

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Fig. 2. Remote sensing images of selected cases before fire and after fire

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Fig. 3. Spatial distribution of samples in each fire case

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Fig. 4. Technical flow chart

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Fig. 5. Characteristics of SAR images response in different features before and after fire

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Fig. 6. Time series of Sentinel-1 SAR images in different cases

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Fig. 7. Time series of NBR in different cases

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Table 1. Table 1Forest fire case information

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Table 1. Table 1Forest fire case information

火灾案例简称	火灾地点	火灾日期	经纬度	受灾面积/hm²
2022重庆北碚	重庆市北碚区歇马街道虎头村	2022年8月21日	106.33°E，29.76°N	1 055
2022重庆大足	重庆市大足区万古镇	2022年8月20日	105.97°E，29.65°N	848
2021四川冕宁	四川省凉山州冕宁县石龙镇	2021年4月20日	102.20°E，28.38°N	1 070
2020四川西昌	四川省西昌市经久乡和安哈镇交界的皮家山	2020年3月30日	102.24°E，27.83°N	2 410
2020四川木里	四川省凉山州木里县乔瓦镇锄头湾村与项脚蒙古族乡项脚村交界处	2020年3月28日	101.40°E，27.93°N	9 265
2019山西沁源	山西省沁源县王陶乡王陶村	2019年3月29日	112.32°E，36.77°N	9 533

Table 2. Table 2List of remote sensing images

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Table 2. Table 2List of remote sensing images

火灾案例	Sentinel-1成像日期（灾前，灾后）	Sentinel-1成像时段	Sentinel-2成像日期（灾前，灾后）
2022重庆北碚	2022.8.4，2022.9.9	2021.1.1~2023.11.15	2022.8.14，2022.9.13
2022重庆大足	2022.8.4，2022.9.9	2021.1.1~2023.11.15	2022.8.14，2022.9.13
2021四川冕宁	2021.4.9，2022.5.15	2020.1.1~2023.11.13	2021.4.4，2021.4.24
2020四川西昌	2020.3.9，2020.4.14	2019.1.1~2022.12.31	2020.3.20，2020.4.19
2020四川木里	2020.3.16，2020.4.14	2019.1.1~2022.12.31	2020.3.20，2020.4.14
2019山西沁源	2019.3.9，2019.4.14	2018.1.1~2021.12.31	2019.3.12，2019.4.16

Table 3. Table 3Number and area of samples in each fire case

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Table 3. Table 3Number and area of samples in each fire case

样本类型	2022年重庆北碚		2022年重庆大足		2021年四川冕宁		2020年四川西昌		2020年四川木里		2019年山西沁源
样本类型	数量	面积/km²	数量	面积/km²	数量	面积/km²	数量	面积/km²	数量	面积/km²	数量	面积/km²
森林	2	13.39	2	13.39	7	0.82	2	5.40	4	1.54	2	42.19
火烧迹地	1	9.34	1	7.37	6	1.22	5	17.17	7	2.66	2	18.37
建筑物	3	38.94	3	38.94	7	0.15	4	7.85	3	0.03	8	2.04
水体	2	0.19	2	0.19	1	0.06	1	13.80	4	0.45	3	3.73

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Xinyu HUANG, Rui SUN, Yufei XU. Characteristics of Remote Sensing Response from SAR Images and Time Series Analysis of Forest Burned Area[J]. Remote Sensing Technology and Application, 2025, 40(3): 509

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Paper Information

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Received: Dec. 28, 2023

Accepted: --

Published Online: Sep. 28, 2025

The Author Email: Rui SUN (sunrui@bnu.edu.cn)

DOI:10.11873/j.issn.1004-0323.2025.3.0509

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