Review of methods for in situ leaf area index determination: Part I. Theories, sensors and hemispherical photography

I Jonckheere, S Fleck, K Nackaerts, B Muys… - Agricultural and forest …, 2004 - Elsevier
Rapid, reliable and objective estimations of leaf area index (LAI) are essential for numerous
studies of atmosphere–vegetation interaction, as LAI is very often a critical parameter in …

A review of light interception in plant stands from leaf to canopy in different plant functional types and in species with varying shade tolerance

Ü Niinemets - Ecological Research, 2010 - Springer
Abstract Changes in the efficiency of light interception and in the costs for light harvesting
along the light gradients from the top of the plant canopy to the bottom are the major means …

Methodology comparison for canopy structure parameters extraction from digital hemispherical photography in boreal forests

SG Leblanc, JM Chen, R Fernandes… - Agricultural and Forest …, 2005 - Elsevier
The retrieval of canopy architectural parameters using off-the-shelf digital cameras with fish-
eye lens is investigated. The technique used takes advantage of the sensor's linear …

Global patterns of biomass allocation in woody species with different tolerances of shade and drought: evidence for multiple strategies

G Puglielli, L Laanisto, H Poorter… - New Phytologist, 2021 - Wiley Online Library
The optimal partitioning theory predicts that plants of a given species acclimate to different
environments by allocating a larger proportion of biomass to the organs acquiring the most …

A comparison of digital and film fisheye photography for analysis of forest canopy structure and gap light transmission

GW Frazer, RA Fournier, JA Trofymow… - Agricultural and forest …, 2001 - Elsevier
Due to the scarcity and high cost of conventional film-based hemispherical photographic
systems, some forest scientists are now using multi-purpose, consumer-grade digital …

Spectral and structural measures of northwest forest vegetation at leaf to landscape scales

DA Roberts, SL Ustin, S Ogunjemiyo, J Greenberg… - Ecosystems, 2004 - Springer
We report a multiscale study in the Wind River Valley in southwestern Washington, where
we quantified leaf to stand scale variation in spectral reflectance for dominant species. Four …

Estimation of leaf area and clumping indexes of crops with hemispherical photographs

V Demarez, S Duthoit, F Baret, M Weiss… - Agricultural and Forest …, 2008 - Elsevier
Among many indirect approaches to retrieve effective leaf area index (LAI), hemispherical
photography is now widely used by the scientific community in forestry applications. A recent …

The importance of canopy structure in controlling the interception loss of rainfall: Examples from a young and an old-growth Douglas-fir forest

TG Pypker, BJ Bond, TE Link, D Marks… - Agricultural and forest …, 2005 - Elsevier
The canopy water storage capacity (S), direct throughfall fraction (p), the ratio of evaporation
to rainfall intensity (E¯/R¯) and interception loss (In), of a Douglas-fir forest are influenced by …

Estimating leaf area index in different types of mature forest stands in Switzerland: a comparison of methods

A Thimonier, I Sedivy, P Schleppi - European Journal of Forest Research, 2010 - Springer
Leaf area index (LAI) was estimated at 15 sites in the Swiss Long-Term Forest Ecosystem
Research Programme (LWF) in 2004–2005 using two indirect techniques: the LAI-2000 …

Three-dimensional Structure of an Old-growth Pseudotsuga-Tsuga Canopy and Its Implications for Radiation Balance, Microclimate, and Gas Exchange

GG Parker, ME Harmon, MA Lefsky, J Chen, RV Pelt… - Ecosystems, 2004 - Springer
We describe the three-dimensional structure of an old-growth Douglas-fir/western hemlock
forest in the central Cascades of southern Washington, USA. We concentrate on the vertical …