Results 61 to 70 of about 510 (196)

Using Vegetation Indices Developed for Sentinel-2 Multispectral Data to Track Spatiotemporal Changes in the Leaf Area Index of Temperate Deciduous Forests

Geomatics
The leaf area index (LAI) in temperate forests is highly dynamic throughout the season, and lacking such dynamic information has limited our understanding of carbon and water flux patterns in these ecosystems.
Xuanwen Wang, Yi Gan, Atsuhiro Iio, Quan Wang   +3 more
doaj   +1 more source

Rapid Assessment of Key Structural Elements of Different Vegetation Types of West African Savannas in Burkina Faso

Journal of Landscape Ecology, 2016
Estimations of Leaf Area Index (LAI) have recently gained attention due to the sensitivity to the effects of climate change and its impact on forest ecosystems.
Qasim Mohammad, Porembski Stefan, Stein Katharina, Lindner André   +3 more
doaj   +1 more source

Perovskite Photodetectors at the Intelligence Frontier: From Tunable Materials to Adaptive Optoelectronic Systems

Carbon Energy, EarlyView.
This comprehensive review presents a progressive roadmap for perovskite vision detectors. Centered on perovskite‐based artificial perception, the graphic illustrates a systematic evolution: starting with fundamental material engineering and device architectures, advancing toward complex functional strategies such as flexible neuromorphic imaging ...
Chenglong Li, Wei Qu, Deepak Kumar, Naini Jain, Nur Wardina Syahirah binti Mohamad Fadil, Nur Najiha binti Ahmad Rasid, Emannuel Kymakis, Maria Vasilopoulou, Chunxiong Bao, Feng Gao, Peng Gao, Sanjeev Kumar Sharma, Mohammad Khaja Nazeeruddin, Abd. Rashid bin Mohd Yusoff, Haotong Wei   +14 more
wiley   +1 more source

The relationship between directional area scattering factor and foliage clumping based on DSCOVR EPIC data over Australian TERN sites

Frontiers in Remote Sensing
The Directional Area Scattering Factor (DASF) quantifies the fraction of visible canopy leaf area in a given direction and has demonstrated utility in characterizing vegetation structure. While traditionally applied to dense canopies under the assumption
Jan Pisek, Catherine Akinyi Odera, Angela Erb, Alexander Marshak, Yuri Knyazikhin   +4 more
doaj   +1 more source

Global distribution of avian plumage coloration and patterning: the relative influence of climate, ecology, and sexual selection

Ecography, EarlyView.
Animal coloration exhibits substantial biogeographic variation, reflecting complex adaptations to both abiotic and biotic environments. Although the evolutionary mechanisms underlying avian plumage coloration have been widely studied, geographic variation in plumage patterning has received far less attention.
Yuqing Han, Ying Zeng, Tien Ming Lee, Long Wang, Chen Zeng, Pengfei Fan, Çağan H. Şekercioğlu, Weini Huang, Yang Liu   +8 more
wiley   +1 more source

Spatially balanced subsampling improves stand-level leaf area index estimation in mature Norway spruce stands

Frontiers in Forests and Global Change
IntroductionLeaf area index (LAI) estimation is sensitive to sensor field of view (FOV), within-plot spatial heterogeneity, and sampling layout. Because LAI influences canopy radiation transmission, microclimate and vegetation–atmosphere exchange, robust
Jakub Černý, Jakub Černý, Jakub Černý, Jaroslav Čepl, Jan Cukor, Jan Cukor, Zdeněk Vacek, Jan Stejskal, Holger Lange   +8 more
doaj   +1 more source

Organic photonic synaptic transistors for bionic vision: From spectral engineering to flexible intelligent perception

FlexMat, EarlyView.
Different wavelength photonic synapses are used for biomimetic visual applications. Abstract Bionic intelligent visual perception systems have significant application prospects in fields such as autonomous driving and robotics, medical imaging and auxiliary diagnosis, security and monitoring.
Longlong Jiang, Shan Wu, Silu Feng, Heyi Huang, Wangyu Wu, Hong Han, Yao Ni   +6 more
wiley   +1 more source

Wide‐range and high‐resolution Young's modulus sensing enabled by a complementary indentation‐protrusion architecture

FlexMat, EarlyView.
A tactile sensor integrating indentation and protrusion sensing within a single platform enables accurate perception of object Young's modulus. This complementary architecture expands the detectable Young's modulus range to 25.8–2639.2 kPa and achieves an object recognition accuracy of 94.27%, outperforming indentation‐only (84.59%) and protrusion‐only
Jiasen Xie, Xingyu Ma, Yongming Wang, Ying Yang, Mingwei Gu, Lin Zheng, Junshuai Chen, Yunjie Lu, Jinhui Gu, Jin Ge   +9 more
wiley   +1 more source

Accuracy assessment of LAI, PAI and FCOVER from Sentinel-2 and GEDI for monitoring forests and their disturbance in Central Germany

European Journal of Remote Sensing
Forest monitoring benefits from biophysical parameters such as Leaf Area Index (LAI), Plant Area Index (PAI) and fractional vegetation cover (FCOVER) and can be obtained from optical and LiDAR remote sensing, such as Sentinel-2 (S2) and the Global ...
Birgitta Putzenlechner, Felix Bevern, Philipp Koal, Simon Grieger, Martin Kappas, Tatjana Koukal, Markus Löw, Federico Filipponi   +7 more
doaj   +1 more source

A spectral–structural characterization of European temperate, hemiboreal, and boreal forests [PDF]

Earth System Science Data
Radiative transfer models of vegetation play a crucial role in the development of remote sensing methods by providing a theoretical framework to explain how electromagnetic radiation interacts with vegetation in different spectral regions.
M. Rautiainen, A. Hovi, D. Schraik, D. Schraik, J. Hanuš, P. Lukeš, Z. Lhotáková, L. Homolová   +7 more
doaj   +1 more source