Results 11 to 20 of about 1,278,304 (260)

Diurnal and Seasonal Variations of Particulate Matter Concentrations in the Urban Forests of Saetgang Ecological Park in Seoul, Korea

open access: yesLand, 2021
Urban forests provide various ecosystem services. Although the function of reducing particulate matter (PM) in the city is known, research into the reduction of PM according to the type and structure of various forests is still needed. It is essential to
Hong-Duck Sou   +3 more
doaj   +1 more source

Comparison of LiDAR and Digital Aerial Photogrammetry for Characterizing Canopy Openings in the Boreal Forest of Northern Alberta

open access: yesRemote Sensing, 2019
Forest canopy openings are a key element of forest structure, influencing a host of ecological dynamics. Light detection and ranging (LiDAR) is the de-facto standard for measuring three-dimensional forest structure, but digital aerial photogrammetry (DAP)
Annette Dietmaier   +4 more
doaj   +1 more source

Simulation of Ku-Band Profile Radar Waveform by Extending Radiosity Applicable to Porous Individual Objects (RAPID2) Model

open access: yesRemote Sensing, 2020
Similar to light detection and ranging (lidar), profile radar can detect forest vertical structure directly. Recently, the first Ku-band profile radar system designed for forest applications, called Tomoradar, has been developed and evaluated in boreal ...
Kai Du, Huaguo Huang, Yuyi Zhu
doaj   +1 more source

Evaluating Data Inter-Operability of Multiple UAV–LiDAR Systems for Measuring the 3D Structure of Savanna Woodland

open access: yesRemote Sensing, 2022
For vegetation monitoring, it is crucial to understand which changes are caused by the measurement setup and which changes are true representations of vegetation dynamics.
Harm Bartholomeus   +7 more
doaj   +1 more source

Evaluating the Use of Lidar to Discern Snag Characteristics Important for Wildlife

open access: yesRemote Sensing, 2022
Standing dead trees (known as snags) are historically difficult to map and model using airborne laser scanning (ALS), or lidar. Specific snag characteristics are important for wildlife; for instance, a larger snag with a broken top can serve as a nesting
Jessica M. Stitt   +4 more
doaj   +1 more source

Ice storm effects on the canopy structure of a northern hardwood forest after 8 years [PDF]

open access: yes, 2009
Ice storms can cause severe damage to forest canopies, resulting in differential mortality among tree species and size classes and leading to long-lasting changes in the vertical structure and composition of the forest.
Hamburg, Steven P.   +2 more
core   +3 more sources

Habitat Specificity Modulates the Response of Small Mammals to Habitat Fragmentation, Loss, and Quality in a Neotropical Savanna

open access: yesFrontiers in Ecology and Evolution, 2021
Landscape conversion of natural environments into agriculture and pasture are driving a marked biodiversity decline in the tropics. Consequences of fragmentation might depend upon habitat amount in the landscape, while the quality of remnants can also ...
Ingrid de Mattos   +2 more
doaj   +1 more source

Does degradation from selective logging and illegal activities differently impact forest resources? A case study in Ghana [PDF]

open access: yes, 2016
Degradation, a reduction of the ecosystem’s capacity to supply goods and services, is widespread in tropical forests and mainly caused by human disturbance.
Cazzolla Gatti, R.   +11 more
core   +1 more source

Effects of forest fragmentation on the vertical stratification of neotropical bats [PDF]

open access: yes, 2020
Vertical stratification is a key component of the biological complexity of rainforests. Understanding community- and species-level responses to disturbance across forest strata is paramount for evidence-based conservation and management.
Farneda, F   +4 more
core   +4 more sources

Forest Biomass Mapping Using Continuous InSAR and Discrete Waveform Lidar Measurements: A TanDEM-X/GEDI Test Study

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article addresses the implementation of an above ground biomass (AGB) estimation scheme relying on the height-to-biomass allometry at stand level in the context of the synergistic use of continuous TanDEM-X (bistatic) interferometric synthetic ...
Changhyun Choi   +3 more
doaj   +1 more source

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