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Table 1 Parameter estimates and standard errors of the tested models

From: Modelling aboveground forest biomass using airborne laser scanner data in the miombo woodlands of Tanzania

Covariatea

Model 1

Model 2

Model 3

Estimate

Standard error

Estimate

Standard error

Estimate

Standard error

Intercept

0.8630

0.2520

0.7385

0.2848

0.6702

0.2238

PF70

0.3481

0.0338

0.3515

0.0345

0.3701

0.0273

TF0

3.7779

0.5713

3.8436

0.6003

4.4363

0.4829

TF5

4.0742

1.2839

3.7574

1.2964

1.7055

1.0384

TF8

−6.2178

1.9462

−6.5277

1.9310

−4.1964

1.4833

PL20

0.3191

0.1241

0.2684

0.1232

0.1844

0.1100

PL30

−0.2295

0.1110

−0.1845

0.1096

−0.1059

0.0951

TL7

−12.4990

4.0241

−11.9814

4.0086

−6.8397

2.7174

TL8

18.3840

5.5361

19.5302

5.4729

10.8928

3.7172

  1. aPF70 = Percentile of the first echo canopy heights for 70 % (m); PL20 and PL30 = Percentiles of the last echo canopy heights for 20 and 30 % (m); TF0, TF5, and TF8 = Canopy densities corresponding to the proportion of first echoes above fraction #0 (1.3 m), #5, and #8 (see text); TL7 and TL8 = Canopy densities corresponding to the proportion of last echoes above fraction #7 and #8 (see text)