Improved algorithm for estimating canopy indices from gap fraction data in forest canopies

By T. Nilson, A. Kuusk. 2004

60 citations recorded by the source corpus.

Subfields: Ecology, Environmental Engineering, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/fc703f3a33428beada91284e06781ce83664d5c0

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In Ecology

In Environmental Engineering

In Nature and Landscape Conservation

Citations in the corpus

Leaf area index estimation in mountain even-aged Pinus silvestris L. stands from hemispherical photographs (2007, background): “With optical-based LAI estimations, the effect of stems and branches in light interception must also be taken into account, especially in mature stands, where the effect of the woody parts is more noticeable (Nilson and Kuusk, 2004).”
Retrieving Leaf Area Index (LAI) Using Remote Sensing: Theories, Methods and Sensors (2009, methodology): “[66], the method used the eigenvectors and eigenvalue of the covariance matrix to describe the random variation of gap fraction at the near-zenith view direction and showed good performance in relatively open boreal and sub-boreal forest environments.”
On the correct estimation of effective leaf area index: does it reveal information on clumping effects? (2010, methodology): “…Canada Timmins 48.228 N 82.168W Boreal Aspen, Spruce, Birch, Fir 3.29 3.50 0.94 Chen et al. (2006) 0.93 (CC, DHP) Chen et al. (2006) Estonia Järvselja 58.298N 27.258E Boreal Birch and Spruce 3.44 3.59 0.96 VALERI project and (Kodar et al., 2008) 0.82 (Nilson and Kuusk, 2004) This study Y .”
Indirect estimates of canopy gap fraction based on the linear conversion of hemispherical photographs Methodology and comparison with standard thresholding techniques (2007, methodology): “The indirect assessment of PAI in non-random canopies is a major scientific issue, tackled by several authors with different theories and techniques (Nilson, 1971; Lang and Xiang, 1986; Chen and Cihlar, 1995; Kucharik et al., 1999; van Gardingen et al., 1999; Nilson, 1999; Walter et al., 2003; Nilso”