نتایج جستجو برای: photosynthetically active radiation

تعداد نتایج: 668272  

2006
Shunlin Liang Tao Zheng Ronggao Liu Hongliang Fang Si-Chee Tsay Steven W. Running Steven Running

[1] Incident photosynthetically active radiation (PAR) is a key variable needed by almost all terrestrial ecosystem models. Unfortunately, the current incident PAR products estimated from remotely sensed data at spatial and temporal resolutions are not sufficient for carbon cycle modeling and various applications. In this study, the authors develop a new method based on the look-up table approa...

Journal: :Tree physiology 2004
William L Bauerle Joseph D Bowden Michael F McLeod Joe E Toler

Daily and seasonal net photosynthesis (Anet), transpiration (E), absorbed photosynthetically active radiation (Qa) and light-use efficiency (epsilonc) in a red maple container nursery were simulated with MAESTRA, a three-dimensional canopy model. Effects of canopy heterogeneity were simulated by imposing changes in crown spacing. The light transfer sub-model, a distribution model of incident, d...

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