Plant canopies
Sky-canopy border length, exposure and thresholding influence accuracy of hemispherical photography for complex plant canopies
... Model canopies have been used in several HP studies because they are more controllable and manipulable than real canopies (Chianucci 2016; Hwang et ...model canopies were made with opaque black ...
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Modeling canopy-induced turbulence in the Earth system: a unified parameterization of turbulent exchange within plant canopies and the roughness sublayer (CLM-ml v0)
... a range of tall and short canopies, dense and sparse leaf area index, and different climates (Table 2). Tower forcing data (downwelling solar and longwave radiation, air temper- ature, relative humidity, wind ...
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Modeling canopy-induced turbulence in the Earth system: a unified parameterization of turbulent exchange within plant canopies and the roughness sublayer (CLM-ml v0)
... a range of tall and short canopies, dense and sparse leaf area index, and different climates (Table 2). Tower forcing data (downwelling solar and longwave radiation, air temper- ature, relative humidity, wind ...
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Optimisation of photosynthetic carbon gain and within-canopy gradients of associated foliar traits for Amazon forest trees
... Although not yet studied in any great detail to date, gra- dients in foliar cations within plant canopies also occur. For example, Grubb and Edwards (1982) found magnesium con- centrations (dry weight ...
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Suboptimal acclimation of photosynthesis to light in wheat canopies
... within plant canopies commonly results in a cor- relation between the distribution of photosynthetic ca- pacity, light, and specific leaf N (Anten et ...real canopies, the correlation often is not ...
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Three dimensional plant architecture and sunlit shaded patterns: a stochastic model of light dynamics in canopies
... Plant canopies are complex three-dimensional (3-D) structures in which the light distribution is complicated and dynamic, for example due to solar ...2016), plant growth and crop yield (Maddonni et ...
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Active optical sensing of canopies in pasture management
... Proximal ‘Active Optical Sensing’ utilises close range (within a few metres) measurement of light reflectance characteristics from plant canopies. An active optical sensor (AOS) emits light onto the target, ...
6
Assimilating phenology datasets automatically across ICOS ecosystem stations
... within plant canopies exert a strong influence on the carbon, water and energy balance of ...different plant functional types to changes in ...of plant canopies across the Integrated ...
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Hyperspectral proximal sensing of the botanical composition and nutrient content of New Zealand pastures : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Earth Science
... of plant canopies compared with single leaves is more complex because of a number of factors, particularly the canopy ...above-ground plant material and its organization, including the size, shape ...
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Canopy Hyperspectral Reflectance of Redroot Pigweed versus Okra and Super Okra Leaf Cotton
... Redroot pigweed grows quickly allowing it to outcompete agricultural plants for water and nutrients. Its allelopathic characteristics also give it an advantage in crop production systems [17] [18] [19]. Redroot pigweed ...
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Stomatal and non stomatal fluxes of ozone to a northern mixed hardwood forest
... and plant physiological parameters were made at a northern mixed hardwood forest located at the University of Michigan Biological Station in northern Michigan from June 27 to September 28, ...
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Fire and the persistence of tuart woodlands
... 2.2.2 The fire response of S. globulosum in comparison to other shrub species In January 2005, one month after the controlled burn, the proportion of each plot area that was burnt was estimated. Only seven plots had been ...
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Instrumentation enabling study of plant physiological response to elevated night temperature
... affect plant func- tion, often with effects carried beyond the period of expo- ...Another plant-physiological feature that is easy to inadvertently alter during a plant population warming study is ...
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A preliminary report on simulation of flows through canopies with varying atmospheric stability
... approximation is also used. However, turbulent exchange processes in ASL, where a temperature difference between air and ground exists, is much more complex due to transport of vertical momentum and sensible heat. The ...
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Active light sensing of canopies in crop management: Pastures and arable crops
... Two sensitivity experiments were undertaken to determine if there is an effect of varying sensor to target distances and angles on the detected spectral reflectance of sensed pasture. As this sensor was originally ...
7
Simulated single-layer forest canopies delay Northern Hemisphere snowmelt
... This study assessed the impact of deficiencies in simulated longwave enhancement by forest canopies on snow cover in CLM4.5. Sub-canopy longwave radiation simulated by CLM4.5’s single-layer vegetation was ...
15
Sediment deposition from turbidity currents in simulated aquatic vegetation canopies
... Figure 5 presents the depositional flux rates for runs with an initial sediment concentration of.. 1 gL-1 at the thirteen sediment traps within the canopy.[r] ...
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Plant canopy shape and the influences on UV exposures to the canopy
... The plant canopy models have been exposed to solar radiation with the dosimetric system at nine sites over the hemispherical and conical canopies and eight sites over the pinnacle canopy as described in ...
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Population dynamics after wildfires in sagebrush grasslands.
... The second year after burning, when the downy brome population increases, the plants invade the haloes of ash from the burned shrub canopies occupied by native [r] ...
7
Modified Conventional RGB Camera in Obtaining NDVI Spectral Bands at Ground Level Crop Canopy
... Spectral indices are mathematical combinations of different spectral bands mostly in the visible and near- infrared (NIR) regions of the electromagnetic spectrum [1, 2] and are optical measures of vegetation canopy ...
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