期刊论文详细信息
Remote Sensing | |
Estimation of Gap Fraction and Foliage Clumping in Forest Canopies | |
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