What is it about?
The study provide a comprehensive evaluation of the most common indirect optical methods to estimate leaf area index in broadleaved forests, including canopy cover and hemispherical photography, plant canopy analyzer and AccuPAR ceptometers. Results were compared with direct data from littertraps and indicates that canopy photography is an effective and cheaper method to estimate leaf area index in forestry.
Featured Image
Why is it important?
The study showed that cover photography, a method developed by Macfarlane et al., is a very promising technique to estimate leaf area index compared with hemispherical photography and other methods. The strenght of cover photography lies in its simple procedure, high spatial resolution at the zenith, which allows accurate detectioning of gap fraction between and within crowns, resulting in a lower sensitivit of cover photography to image acquisition (exposure, aperture, sky conditions) and processing than hemispherical photography.
Perspectives
Read the Original
This page is a summary of: Estimation of canopy properties in deciduous forests with digital hemispherical and cover photography, Agricultural and Forest Meteorology, January 2013, Elsevier,
DOI: 10.1016/j.agrformet.2012.09.002.
You can read the full text:
Contributors
The following have contributed to this page