[HTML][HTML] Review of indirect optical measurements of leaf area index: Recent advances, challenges, and perspectives

G Yan, R Hu, J Luo, M Weiss, H Jiang, X Mu… - Agricultural and forest …, 2019 - Elsevier
Leaf area index (LAI) is a key parameter of vegetation structure in the fields of agriculture,
forestry, and ecology. Optical indirect methods based on the Beer-Lambert law are widely …

Ground‐based measurements of leaf area index: a review of methods, instruments and current controversies

NJJ Bréda - Journal of experimental botany, 2003 - academic.oup.com
Leaf area index (LAI) is the total one‐sided area of leaf tissue per unit ground surface area. It
is a key parameter in ecophysiology, especially for scaling up the gas exchange from leaf to …

Correcting non-linearity and slope effects in the estimation of the leaf area index of forests from hemispherical photographs

P Schleppi, M Conedera, I Sedivy… - Agricultural and Forest …, 2007 - Elsevier
The leaf area index (LAI) of forest canopies can be estimated indirectly by measuring their
light transmission, either with a specific sensor or by hemispherical photographs. The angle …

Measuring effective leaf area index, foliage profile, and stand height in New England forest stands using a full-waveform ground-based lidar

F Zhao, X Yang, MA Schull, MO Román-Colón… - Remote Sensing of …, 2011 - Elsevier
Effective leaf area index (LAI) retrievals from a scanning, ground-based, near-infrared
(1064nm) lidar that digitizes the full return waveform, the Echidna Validation Instrument …

[HTML][HTML] Digital hemispherical photography for estimating forest canopy properties: current controversies and opportunities

F Chianucci, A Cutini - IForest-biogeosciences and Forestry, 2012 - sisef.it
Hemispherical photography has been used since the 1960s in forest ecology. Nevertheless,
specific constraints related to film cameras have progressively prevented widespread …

PLC: A simple and semi-physical topographic correction method for vegetation canopies based on path length correction

G Yin, A Li, S Wu, W Fan, Y Zeng, K Yan, B Xu… - Remote Sensing of …, 2018 - Elsevier
Rugged terrain distorts optical remote sensing signals, and land-cover classification and
biophysical parameter retrieval over mountainous regions must account for topographic …

[HTML][HTML] 山地森林叶面积指数(LAI) 遥感估算研究进展

贺敏, 闻建光, 游冬琴, 唐勇, 吴胜标, 郝大磊, 林兴稳… - 遥感学报, 2024 - ygxb.ac.cn
叶面积指数LAI (Leaf Area Index) 是表征植被几何结构及生长状态的重要生物物理参数,
也是陆表过程模型的重要输入参数, 如何获取高精度LAI 一直备受关注. 近年来 …

Leaf orientation retrieval from terrestrial laser scanning (TLS) data

G Zheng, LM Moskal - IEEE Transactions on Geoscience and …, 2012 - ieeexplore.ieee.org
Tree leaf orientation, including the distribution of the inclinational and azimuthal angles in
the canopy, is an important attribute of forest canopy architecture and is critical in …

CIMES: A package of programs for determining canopy geometry and solar radiation regimes through hemispherical photographs

A Gonsamo, JMN Walter, P Pellikka - Computers and electronics in …, 2011 - Elsevier
CIMES is a multi-purpose, multi-platform, and free package of programs for the
determination of solar radiation regimes and canopy structure attributes using hemispherical …

Measuring fractional forest canopy element cover and openness–definitions and methodologies revisited

A Gonsamo, P D'odorico, P Pellikka - Oikos, 2013 - Wiley Online Library
Canopy structural parameters are often used to give adequate representation of vegetated
ecosystems for various purposes including primary productivity, climate system, water and …