Remote Sensing Technology and Application, Volume. 40, Issue 3, 681(2025)
Estimation of Above-Ground Biomass in African Savanna Using Multi-Source Satellite Data
Figures & Tables(12)
Fig. 1. Location of the study area and land cover map（Using MODIS land cover data product MCD12Q1）
Fig. 4. Scatter density plots of the estimation results and test data
Fig. 5. Results of aboveground biomass estimation in the study area
Fig. 6. Feature importance of the random forest model in the three experiments
Fig. 7. Comparison of spatial distribution of existing AGBD products in the study area
Fig. 9. Comparison of our result with existing AGBD products in the three selected regions
Table 1.
The column numbers and observation dates of the Sentinel-2 data View tableView in ArticleTable 1.
The column numbers and observation dates of the Sentinel-2 data 行列号 观测日期 旱季中期 雨季初期 旱季初期 T34PEQ、T34PFQ 2021.2.28 2021.5.29 2021.11.25 T34PES、T34PFS T34PER、T34PFR 2021.12.31
Table 2.
Biomass data products for comparison View tableView in ArticleTable 2.
Biomass data products for comparison 产品 时间 分辨率 数据来源 GFW的全球森林生物量产品 2000年 30 m Harris等[2021] ESA CCI的生物量项目数据 2010年 100 m Santoro等[2018] 2020年 100 m Santoro等[2023] Bouvet等制作的非洲大草原
生物量地图
2010年 25 m Bouvet等[2018] Avitabile等制作的全球泛热带生物量地图 2000年 1 km Avitabile等[2016]
Table 3.
The spectral indices used and the calculation formulas View tableView in ArticleTable 3.
The spectral indices used and the calculation formulas 光谱指数 计算公式 归一化差值植被指数[ 28 ]（Normalized Difference Vegetation Index，NDVI）(B8-B4)/(B8+B4) 归一化差值红边植被指数[ 29 ]（Normalized Difference Vegetation Index-Red Edge，NDVIRE）(B6-B4)/(B6+B4) 植物-水分敏感植被指数一[ 30 ]（Plant-water Sensitive Vegetation Index-1，STVI1）(B11×B4)/B8 植物-水分敏感植被指数二[ 30 ]（Plant-water Sensitive Vegetation Index-2，STVI2）B8/(B4×B12) 植物-水分敏感植被指数三[ 30 ]（Plant-water Sensitive Vegetation Index-3，STVI3）B8/(B4×B11) 差值植被指数[ 31 ]（Difference Vegetation Index，DVI）B8-B4 比值植被指数[ 32 ]（Ratio Vegetation Index，RVI）B8/B4 比值光谱指数[ 33 ]（Ratio Spectral Index，RSI)B12/B8 归一化水指数[ 34 ]（Normalized Difference Water Index，NDWI)(B3-B8)/(B3+B8) 地表水分指数[ 35 ]（Land Surface Water Index，LSWI)(B8-B11)/(B8+B11) 缨帽变换的亮度分量[ 36 ]（Tasseled Cap Brightness，TCB)0.204 3×B2+0.415 8×B3+0.552 4×B4+
0.574 1×B8+0.312 4×B11+0.230 3×B12
缨帽变换的绿度分量[ 36 ]（Tasseled Cap Greenness，TCG)-0.160 3×B2－0.281 9×B3－0.493 4×B4+
0.794 0×B8－0.000 2×B11－0.144 6×B12
缨帽变换的湿度分量[ 36 ]（Tasseled Cap Wetness，TCW)0.031 5×B2+0.202 1×B3+0.310 2×B4+
0.159 4×B8－0.680 6×B11-0.610 9×B12
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Yingzhi LIU, Yang LIU, Ronggao LIU, Jilong CHEN, Xuexin WEI. Estimation of Above-Ground Biomass in African Savanna Using Multi-Source Satellite Data[J]. Remote Sensing Technology and Application, 2025, 40(3): 681
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Received: Apr. 2, 2024
Accepted: --
Published Online: Sep. 28, 2025
The Author Email: Yang LIU (liuyang@igsnrr.ac.cn)
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