Results 61 to 70 of about 582 (135)

VegAnn, Vegetation Annotation of multi-crop RGB images acquired under diverse conditions for segmentation. [PDF]

Sci Data, 2023
Madec S, Irfan K, Velumani K, Baret F, David E, Daubige G, Samatan LB, Serouart M, Smith D, James C, Camacho F, Guo W, De Solan B, Chapman SC, Weiss M.   +14 more
europepmc   +1 more source

Performance of Four Optical Methods in Estimating Leaf Area Index at Elementary Sampling Unit of Larix principis-rupprechtii Forests

Forests, 2019
Optical methods are frequently used as a routine method to obtain the elementary sampling unit (ESU) leaf area index (LAI) of forests. However, few studies have attempted to evaluate whether the ESU LAI obtained from optical methods matches the accuracy ...
Jie Zou, Yong Zuo, Peihong Zhong, W. Hou, Peng Leng, Bin Chen   +5 more
semanticscholar   +1 more source

Evaluating Two Optical Methods of Woody-to-Total Area Ratio with Destructive Measurements at Five Larix gmelinii Rupr. Forest Plots in China

Forests, 2018
Accurate in situ leaf area index (LAI) estimates of forest plots are required to validate currently-used LAI map products. Woody-to-total area ratio ( α ) is a crucial parameter in converting the plant area index estimates of forest plots obtained by ...
Jie Zou, Peng Leng, W. Hou, Peihong Zhong, Ling Chen, Chunna Mai, Y. Qian, Yong Zuo   +7 more
semanticscholar   +1 more source

Standard Poster Abstracts for the 17th Asia Pacific Heart Rhythm Society (APHRS) Scientific Sessions

Journal of Arrhythmia, Volume 41, Issue 2, April 2025.
wiley   +1 more source

Competition and Burn Severity Determine Post-Fire Sapling Recovery in a Nationally Protected Boreal Forest of China: An Analysis from Very High-Resolution Satellite Imagery [PDF]

, 2019
Anticipating how boreal forest landscapes will change in response to changing fire regime requires disentangling the effects of various spatial controls on the recovery process of tree saplings.
Crocker, Ellen V., Fang, Lei, Liu, Zhihua, Yan, Yan, Yang, Jian, Yang, Yuanzheng   +5 more
core   +1 more source

Оцінювання індексу листкової поверхні за даними авіаційної лідарної зйомки [PDF]

, 2014
Проведено стислий огляд існуючих методів оцінювання індексу листкової поверхні LAI. Відзначено, що більшість методів виявляються малоефективними на великих площах рослинності.
Козак, І., Попов, М. О., Семко, І. Д.   +2 more
core   +1 more source

Interrelations among leaf and canopy nitrogen, optical and structural traits [PDF]

, 2011
A correlation between canopy nitrogen and albedo has been observed across a wide range of forest types. Determining the nature and mechanisms behind the relationship would help to understand the role of nitrogen in the climate system and better ...
Sullivan, Franklin Brown
core   +2 more sources

How to implement the data collection of leaf area index by means of citizen science and forest gamification? [PDF]

Leaf area index (LAI) is a critical parameter that influences many biophysical processes within forest ecosystems. Collecting in situ LAI measurements by forest canopy hemispherical photography is however costly and laborious.
Lauri Korhonen, Matti Maltamo, Shaohui Zhang, Simone Bianchi, Timo Nummenmaa   +4 more
core   +2 more sources

GROUNDED EO: Data-driven Sentinel-2 LAI and FAPAR retrieval using Gaussian processes trained with extensive fiducial reference measurements

Due to their importance in monitoring and modelling Earth's climate, the Global Climate Observing System (GCOS) designates leaf area index (LAI) and the fraction of absorbed photosynthetically active radiation (FAPAR) as essential climate variables (ECVs)
Brown, Luke, Djamai, Najib, Fernandes, Richard, Kovács, Dávid D., Meier, Courtney, Morris, Harry, Reyes-Muñoz, Pablo, Verrelst, Jochem   +7 more
core   +1 more source

How Universal is the Relationship Between Remotely Sensed Vegetation Indices and Crop Leaf Area Index? A Global Assessment [PDF]

Leaf Area Index (LAI) is a key variable that bridges remote sensing observations to the quantification of agroecosystem processes. In this study, we assessed the universality of the relationships between crop LAI and remotely sensed Vegetation Indices ...
Alonso, Luis, Hong, Suk Young, Kimball, Bruce, Loheide, Steven P., II, Magliulo, Vincenzo, Marshall, Michael, Miyata, Akira, Moreno, Jose, Ozdogan, Mutlu, Roman, Miguel O., Walker, Jeff, Yanghui, Kang, Zipper, Samuel C.   +12 more
core   +1 more source