Terrestrial vegetation currently absorbs approximately a third of anthropogenic CO2 emissions, mitigating the rise of atmospheric CO2. However, terrestrial net primary production is highly sensitive to atmospheric CO2 levels and associated climatic changes. In C3 plants, which dominate terrestrial vegetation, net photosynthesis depends on the ratio between photorespiration and gross photosynthe...

Whereas various kinds of efforts have been paid to reduce greenhouse gas from manufacturing sector, emission has been significantly increased in non-manufacturing sector such as transportation, residential, commercial and service sector. Such GHG increase is closely related with urban activity both in direct way and in indirect way. The contribution of this non-manufacturing sector to all CO2 e...

The stoichiometric ratio of O2 evolution to CO2 uptake during photosynthesis reveals information about reductive metabolism, including the reduction of alternative electron acceptors, such as nitrite and oxaloacetate. Recently we reported that in simultaneous measurements of CO2 uptake and O2 evolution in a sunflower leaf, O2 evolution changed by 7% more than CO2 uptake when light intensity was...

A national priority is to convert CO2 into high-value chemical products such as liquid fuels. Because current electrocatalysts are not adequate, we aim to discover new catalysts by obtaining a detailed understanding of the initial steps of CO2 electroreduction on copper surfaces, the best current catalysts. Using ambient pressure X-ray photoelectron spectroscopy interpreted with quantum mechani...

[1] A multiple‐box model was developed to determine how meteorological, anthropogenic, and biological processes combine to produce diel cycles of carbon dioxide (CO2) mole fraction during each of the four calendar‐based seasons within Salt Lake Valley, Utah, USA. The model was forced by observed winds, sounding‐derived mixing depths, an anthropogenic CO2 emissions inventory, and net biological ...

Carbon dioxide (CO2) has been increasing in atmospheric concentration since the Industrial Revolution. A decreasing number of stomata on leaves of land plants still provides the only morphological evidence that this man-made increase has already affected the biosphere. The current rate of CO2 responsiveness in individual long-lived species cannot be accurately determined from field studies or b...

A forced use of renewable energy sources (RES) is necessary to reduce greenhouse gas emissions significantly. Among RES biomass-based resources play a specific role regarding their CO2-reduction potentials, their energetic potentials and their overall costs for different derived energy carriers. From various categories of biomass resources e forestry, agricultural crops, short rotation coppices...

China has pledged to reduce its CO2 emissions per unit of GDP by 40–45% by 2020 as of 2005 level. This research examines China’s 2020 carbon intensity target and its interdependence with the overarching national economic and social development goals. The results show that, with annual GDP growth rate at 7% during the 12th Five-Year-Plan (FYP) period and 6% during the 13th FYP period, the 45% CO...