基于ICESat-2和Sentinel-2A数据的森林蓄积量反演
刘美艳, 聂胜, 王成, 习晓环, 程峰, 冯宝坤
Forest stock volume inversion based on ICESat-2 and Sentinel-2A data
LIU Meiyan, NIE Sheng, WANG Cheng, XI Xiaohuan, CHENG Feng, FENG Baokun
表6
精度对比
Tab.6
Precision comparison
模型
变量集
R
2
RMSE
/
(m
3
·hm
-2
)
rRMSE
/
%
Bias
/
(m
3
·hm
-2
)
逐步线性回归
变量集1
0.406 9
146.39
62.96
-87.220
变量集2
0.590 1
118.44
50.94
-27.894
变量集3
0.632 7
110.33
47.45
20.923
RF
变量集1
0.525 0
108.05
46.47
-19.486
变量集2
0.694 8
86.50
37.20
-17.627
变量集3
0.703 4
84.78
36.46
-16.559