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Table 1 Site areas, period of field measurements, and acquisition details for the ALS data

From: Multidimensional scaling of first-return airborne laser echoes for prediction and model-assisted estimation of a distribution of tree stem diameters

Site

Area (km2)

Field measurements

ALS flight period

LiDAR type

Flight altitude (m)

Mean echo density m−2

Scanning angle (degrees)

Band swath (m)

Aillon

25.5

03–04/2011

08/2011

Riegl LMS-Q560

550

16.5

±30°

621

Bure

40

02/2010

03/2010

Riegl LMS-Q560

600

18.7

±20°

417

St. Gobain

104

01–03/2015

03/2015

Riegl LMS-680i

550

18

±30°

615

The Vosges

1362

02–04/2012

04/2011

Optech ALTM3100

1500

4.6

±13°

673