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Food Chemistry 2018
Journal of Food, Nutrition and Population Health
ISSN: 2577-0586
Page 71
July 23-24, 2018
Rome, Italy
3
rd
Edition of International Conference on
Agriculture &
Food Chemistry
Q
uantification
of
the
canopy
photosynthesis
and
evapotranspiration (ET) of crops is essential to determine
the effects of environmental changes on CO
2
fluxes and ET in
agricultural ecosystems and crop productivity. This study was
conducted to simulate the CO
2
fluxes and ET of paddy rice (
Oryza
sativa
) basedon thedevelopment of photosynthesisandETmodels.
We also projected spatiotemporal variations in CO
2
assimilation
and ET using a crop model based on remotely sensed information
to identify a link of CO
2
and water balances with the accumulation
of plant biomass. The photosynthesis and ET models that were
developed simulated CO
2
assimilation and ET that had statistically
acceptable agreements with the corresponding experimental
measurements. Also, projections of spatiotemporal variations in
absorption of CO
2
and ET were established using the GRAMI- rice
model using remote sensing data. These results indicate that CO
2
and water fluxes in paddy rice could be well quantified based on
simulation projecting spatiotemporal assimilation of CO
2
and ET.
Our results would highlight the need to partition water and carbon
fluxes to improve our mechanistic understanding of primary
productivity and water use efficiency of rice and environmental
impact of agricultural practices. Further efforts should be made to
seek ecological implications through a fusion between at-ground
measurements and remote sensing observations via model
improvement.
Biography
Jonghan Ko is an Associate Professor position at ChonnamNational Universi-
ty, Gwangju, South Korea. He is a cropmodeler and agricultural remote sensing
researcher. His research fields include agronomic applications of crop model-
ing techniques, quantitative agricultural remote sensing and environmental
crop ecology. He was awarded a PhD degree in Agronomy at Texas Tech Uni-
versity, Lubbock, Texas, The USA, with a dissertation topic of “Development of
a cotton crop model that uses remote sensing data” in 2004. He received both
Bachelor’s and Master’s degrees in agronomy at Kangwon National University,
Chuncheon, South Korea in 1995 and 1998 respectively.
Jonghan.ko@jnu.ac.krSimulation of carbon fluxes and evapotranspiration in rice
fields
Jonghan Ko
1
, Jinsil Choi
1
, Seungtaek Jeong
1
and
Bhone Nay-Htoon
2
1
Chonnam National University, South Korea
2
Livelihoods and Food Security Trust Fund - UNOPS, Myanmar
Jonghan Ko et al., J Food Nutr Popul Health 2018, Volume 2
DOI: 10.21767/2577-0586-C2-006