Remote Sensing Technology and Application, Volume. 40, Issue 3, 532(2025)
A Method for Decomposing the Leaf Age Cohorts in Tropical Evergreen Broadleaved Forests
Figures & Tables(8)
Fig. 1. Location of the study area and the forests cover types map from the Natural Earth
Fig. 2. The relationship between Vc，max25 and leaf age，and A/Ci response curve modelled at 25 °C
Fig. 3. The workflow for calculated-LAI with leaf age cohort using the linear least squares solver with bounds or linear constraints （Lsqlin） method
Fig. 4. Compared with the phenological camera observation data， the seasonality of LAI with different leaf age cohorts
Fig. 5. Spatial pattern of LAI average values with leaf age cohorts
Fig. 6. Regional seasonality analyst of LAI cohorts using K-means clustering method
Table 1.
Inputting gridded datasets View tableView in ArticleTable 1.
Inputting gridded datasets 数据名缩写 数据集名称 数据来源 空间分辨率 时间分辨率 时期 Tair 温度 ERA5-Land 0.1°×0.1° 逐月 1950.01~2021.12 VPD 饱和水汽压差 ERA Interim 0.125°×0.125° 逐月 1982.01~2018.12 SW 下行短波辐射 BESS 0.05°×0.05° 逐日 2001.01~2019.12 GPP 基于太阳诱导叶绿素荧光（GOSIF）生产的总初级生产力 OCO-2 SIF 0.05°×0.05° 逐月 2000.01~2022.12
Table 2.
Evaluation of simulated LAI<sub>young</sub>， LAI<sub>mature</sub>， and LAI<sub>old</sub> in comparison with observed data at five sites View tableView in ArticleTable 2.
Evaluation of simulated LAI<sub>young</sub>， LAI<sub>mature</sub>， and LAI<sub>old</sub> in comparison with observed data at five sites 叶龄组分
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幼叶
（R2/RMSE m2 m-2）
成熟叶
（R2/RMSE m2 m-2）
老龄叶
（R2/RMSE m2 m-2）
K67 0.28 / 1.03 0.40 / 1.40 0.03 / 1.80 K34 0.06 / 0.69 0.82 / 0.98 0.39 / 1.02 Barro Colorado 0.76 / 1.51 0.78 / 1.43 0.60 / 0.47 NEON GUAN 0.34 / 1.00 0.77 / 1.12 0.80 / 1.21 ATTO 0.16 / 0.83 0.30 / 1.38 0.61 / 1.35
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Fangyi WANG, Xueqin YANG, Yixuan PAN, Yunpeng WANG, Xiuzhi CHEN. A Method for Decomposing the Leaf Age Cohorts in Tropical Evergreen Broadleaved Forests[J]. Remote Sensing Technology and Application, 2025, 40(3): 532
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Received: Mar. 27, 2024
Accepted: --
Published Online: Sep. 28, 2025
The Author Email: Xueqin YANG (yangxueqin20@mails.ucas.ac.cn)
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