Results 31 to 40 of about 223,542 (302)

Beef cattle performance in response to Ipyporã and Marandu brachiariagrass cultivars under rotational stocking management

open access: yesRevista Brasileira de Zootecnia, 2018
The objective of this two-year study was to evaluate live weight gain per animal and per area and their relationships with the characteristics of BRS Ipyporã (Brachiaria ruziziensis × Brachiaria brizantha) and Marandu (Brachiaria brizantha) pastures.
Valéria Pacheco Batista Euclides   +6 more
doaj   +1 more source

Effects of vegetation canopy structure on remotely sensed canopy temperatures [PDF]

open access: yesRemote Sensing of Environment, 1980
The effects of vegetation canopy structure on thermal infrared sensor response must be understood before vegetation surface temperatures of canopies with low percent ground cover can be accurately inferred. The response of a sensor is a function of vegetation geometric structure, the vertical surface temperature distribution of the canopy components ...
openaire   +1 more source

Contribution of Lianas to Plant Area Index and Canopy Structure in A Panamanian Forest [PDF]

open access: yes, 2016
Lianas are an important component of tropical forests, where they reduce tree growth, fecundity, and survival. Competition for light from lianas may be intense; however, the amount of light that lianas intercept is poorly understood.
Bohrer, Gil   +4 more
core   +2 more sources

Rapid Characterization of Vegetation Structure with a Microsoft Kinect Sensor

open access: yesSensors, 2013
The importance of vegetation structure and biomass in controlling land-atmosphere exchange is widely recognized, but measurements of canopy structure are challenging, time consuming, and often rely on destructive methods.
George Azzari   +2 more
doaj   +1 more source

Crop Monitoring Using Satellite/UAV Data Fusion and Machine Learning

open access: yesRemote Sensing, 2020
Non-destructive crop monitoring over large areas with high efficiency is of great significance in precision agriculture and plant phenotyping, as well as decision making with regards to grain policy and food security.
Maitiniyazi Maimaitijiang   +5 more
doaj   +1 more source

UAV-LiDAR Measurement of Vegetation Canopy Structure Parameters and Their Impact on Land–Air Exchange Simulation Based on Noah-MP Model

open access: yesRemote Sensing, 2022
Land surface processes play a vital role in the exchange of momentum, energy, and mass between the land and the atmosphere. However, the current model simplifies the canopy structure using approximately three to six parameters, which makes the ...
Guotong Wu   +9 more
doaj   +1 more source

Parallel functional and stoichiometric trait shifts in South American and African forest communities with elevation [PDF]

open access: yes, 2017
The Amazon and Congo basins are the two largest continuous blocks of tropical forest with a central role for global biogeochemical cycles and ecology. However, both biomes differ in structure and species richness and composition.
C. Taveirne   +8 more
core   +3 more sources

UAV and ground-based imagery analysis detects canopy structure changes after canopy management applications

open access: yesOENO One, 2020
Aim: To analyse unmanned aerial vehicle (UAV)-based imagery to assess canopy structural changes after the application of different canopy management practices in the vineyard.
Jingyun Ouyang   +3 more
doaj  

Enhancing maize radiation use efficiency under high planting density by shaping canopy architecture with a plant growth regulator

open access: yesCrop and Environment
Optimized maize (Zea mays L.) canopy architecture enhances density-tolerance. DHEAP (N, N-Diethyl-2-hexanoyl oxygen radicals-ethyl amine (2-ethyl chloride) phosphonic acid salt) has been shown to increase maize upper canopy strata compactness, but its ...
Guanmin Huang   +6 more
doaj   +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.
Dost, R.   +3 more
core  

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