نتایج جستجو برای: light interception

تعداد نتایج: 401071  

2007
Qiaoxue Dong Weizhong Yang Yiming Wang

This paper present how the light transfer and interception inside the canopy was computed by combining a tomato dynamic growth model. The tomato functional structural growth model was applied to produce the topology and geometry of individual plant, and through transformation, the canopy could be composed of multi-individual plants. In this simulation system, a radioactive transfer model named ...

Journal: :journal of rangeland science 2011
nasrin kolahchi mohsen mohseni saravi ali tavili mohammad jafari ghassem assadian

vegetation cover is the first barrier for the raindrops resulting to the interception and infiltration loss. interception as one of the main components of ecohydrology equation plays a major role in the water balance of rangelands. however, few studies have been done on the interception of rangeland plants in iran. this study was carried out to find the interception rate in astragalus parrowian...

2007
Brian E Roth K Clint Slatton Matthew J Cohen

© The Ecological Society of America www.frontiersinecology.org T is a crucial need to understand ecological water balances, both in the present and in the future. This balance is currently shifting, as economies rapidly develop and urbanization accelerates (Hubacek and Sun 2005). In the future, global climate change and the resulting uncertainties will only add to the urgency of finding accurat...

2012
Romain Barillot Didier Combes Valérie Chevalier Christian Fournier Abraham J. Escobar-Gutiérrez

BACKGROUND AND AIMS Light interception is a key factor driving the functioning of wheat-pea intercrops. The sharing of light is related to the canopy structure, which results from the architectural parameters of the mixed species. In the present study, we characterized six contrasting pea genotypes and identified architectural parameters whose range of variability leads to various levels of lig...

2007
Daniel J. Chmura Mark G. Tjoelker

Forest production depends on CO2 assimilation, but is rarely solely a function of leaf-level photosynthesis. Crown characteristics may affect tree growth by altering light interception and photosynthesis at canopy level. Strong light gradients are present in forest canopies, which often result in parallel changes in leaf morphology and leaf nitrogen for efficient use of light in photosynthetic ...

Journal: :Zoology 2006
Brent D Opell Jason E Bond Daniel A Warner

Cribellar prey capture threads found in primitive, horizontal orb-webs reflect more light, including ultraviolet wavelengths, than viscous threads found in more derived, vertical orb-webs. Low web visibility and vertical orientation are each thought to increase prey interception and may represent key innovations that contributed to the greater diversity of modern, araneoid orb-weaving spiders. ...

2011
Irfan Younas Atif Aqeel

This paper presents a computational model that uses a modified Genetic Algorithm (GA) approach, to provide more accurate results for mid-air targets interception. The proportional navigation laws that have been practiced for many years for target interception have been deployed in this research. A revised GA is formulated to determine the optimal interception point by modifying the heuristic cr...

Journal: :Agronomy 2022

Plant photosynthesis and biomass production are associated with the amount of intercepted light, especially light distribution inside canopy. Three virtual canopies (n = 80, 3.25 plants/m2) were constructed based on average leaf size digitized plant structures: ‘small leaf’ (98.1 cm2), ‘medium (163.0 cm2) ‘big (241.6 cm2). The ratios diffuse set in three gradients (27.8%, 48.7%, 89.6%). simulat...

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