نتایج جستجو برای: soybean canopy

تعداد نتایج: 47747  

Journal: :Journal of plant physiology 2015
Anatoly A Gitelson Yi Peng Timothy J Arkebauer Andrew E Suyker

Vegetation productivity metrics such as gross primary production (GPP) at the canopy scale are greatly affected by the efficiency of using absorbed radiation for photosynthesis, or light use efficiency (LUE). Thus, close investigation of the relationships between canopy GPP and photosynthetically active radiation absorbed by vegetation is the basis for quantification of LUE. We used multiyear o...

Journal: :Plant, cell & environment 2008
Lisa R Welp Xuhui Lee Kyounghee Kim Timothy J Griffis Kaycie A Billmark John M Baker

Stable isotopes in water have the potential to diagnose changes in the earth's hydrological budget in response to climate change and land use change. However, there have been few measurements in the vapour phase. Here, we present high-frequency measurements of oxygen isotopic compositions of water vapour (delta(v)) and evapotranspiration (delta(ET)) above a soybean canopy using the tunable diod...

2018
Guofang Miao Kaiyu Guan Xi Yang Carl J. Bernacchi Joseph A. Berry Evan H. DeLucia Jin Wu Caitlin E. Moore Katherine Meacham Yaping Cai Bin Peng Hyungsuk Kimm Michael D. Masters

250 words) Recent development of sun-induced chlorophyll fluorescence (SIF) technology is stimulating studies to remotely approximate canopy photosynthesis (measured as gross primary production, GPP). While multiple applications have advanced the empirical relationship between GPP and SIF, mechanistic understanding of this relationship is still limited. GPP:SIF relationship, using the standard ...

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