Results 21 to 30 of about 1,457,519 (305)

Carbon fluxes in a mature deciduous forest under elevated CO₂ [PDF]

open access: yes, 2010
This PhD thesis addressed several major aspects of the carbon (C) cycle in a c. 100-year-old, mixed deciduous forest under elevated CO₂ with an emphasis on below-ground processes.
Bader, Martin
core   +1 more source

Canopy structural modeling using object-oriented image classification and laser scanning [PDF]

open access: yes, 2008
A terrestrial laser scanning (TLS) experiment was carried out in the EAGLE 2006 campaign to characterize and model the canopy structure of the Speulderbos forest. Semi-variogram analysis was used to describe spatial variability of the surface.
Vekerdy, Zoltán   +3 more
core   +1 more source

Die Baumkronenspinnen (Araneae) des Leipziger Auwaldes [PDF]

open access: yes, 2012
The canopy spiders of the floodplain forest in Leipzig have become a focus of ecological studies in recent years. In 2006 we sampled 30 tree canopies in the ‘Burgaue’ nature reserve with pyrethrum knock-down fogging, recording 502 adult spiders belonging
Otto, Stefan, Floren, Andreas
core   +1 more source

Understanding opportunities for urban forest expansion to inform goals: Working toward a virtuous cycle in New York City

open access: yesFrontiers in Sustainable Cities, 2022
Urban forests are critical infrastructure for mitigating environmental and social challenges cities face. Municipalities and non-governmental entities, among others, often set goals (e.g., tree planting or canopy targets) to support urban forests and ...
Michael L. Treglia   +4 more
doaj   +1 more source

Light-related variation in sapling architecture of three shade-tolerant tree species of the Mexican rain forest [PDF]

open access: yes, 2008
The crown architecture of three shade-tolerant tree species (two subcanopy and one mid-canopy) was analyzed in relation to the light regime of the forest understorey.
Bongers, F   +5 more
core   +1 more source

Estimation of canopy structure and individual trees from laser scanning data [PDF]

open access: yes, 2012
During the last fifteen years, laser scanning has emerged as a data source for forest inventory. Airborne laser scanning (ALS) provides 3D data, which may be used in an automated analysis chain to estimate vegetation properties for large areas ...
Lindberg, Eva
core   +1 more source

Weak Environmental Controls of Tropical Forest Canopy Height in the Guiana Shield

open access: yesRemote Sensing, 2016
Canopy height is a key variable in tropical forest functioning and for regional carbon inventories. We investigate the spatial structure of the canopy height of a tropical forest, its relationship with environmental physical covariates, and the ...
Youven Goulamoussène   +5 more
doaj   +1 more source

Sensitivity analysis of leaf wetness duration within a potato canopy [PDF]

open access: yes, 2009
A description and analysis is given of a wetness duration experiment, carried out in a potato field in the centre of the Netherlands in September 2005.
Kessel, G.J.T.   +3 more
core   +1 more source

Influence of voxel size on forest canopy height estimates using full-waveform airborne LiDAR data

open access: yesForest Ecosystems, 2020
Background Forest canopy height is a key forest structure parameter. Precisely estimating forest canopy height is vital to improve forest management and ecological modelling.
Cheng Wang   +5 more
doaj   +1 more source

Health assessment of plantations based on LiDAR canopy spatial structure parameters

open access: yesInternational Journal of Digital Earth, 2022
The Yellow River Delta (YRD) has China's largest artificial Robinia pseudoacacia forest, which was planted in the late 1970s and suffered extensive dieback in the 1990s.
Pengyu Meng   +7 more
doaj   +1 more source

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