Estimation of Gap Fraction and Foliage Clumping in Forest Canopies

Remote Sensing

Silja Märdla¹  Mait Lang²  Andres Kuusk²  Jan Pisek² 

[1] Department of Civil Engineering and Architecture, Road Engineering and Geodesy Research Group, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia;Tartu Observatory, University of Tartu, 61602 Tõravere, Estonia;

关键词: gap fraction;    forest;    airborne laser scanner;    hemispherical photos;    LAI-2000;    terrestrial laser scanner;   

DOI  :  10.3390/rs10071153

来源: DOAJ

【 摘 要 】

The gap fractions of three mature hemi-boreal forest stands in Estonia were estimated using the LAI-2000 plant canopy analyzer ( LI-COR Biosciences, Lincoln, NE, USA) , the TRAC instrument (Miami, FL, USA), Cajanus’ tube, hemispherical photos, as well as terrestrial (TLS) and airborne (ALS) laser scanners. ALS measurements with an 8-year interval confirmed that changes in the structure of mature forest stands are slow, and that measurements in the same season

【 授权许可】

Unknown