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With funding from the National Natural Science Foundation of China (grant number: 41877506), a team of young researchers wang Rong of Fudan University has joined hands with multiple teams at home and abroad to make progress in climate change and the feedback mechanism for the potential of biomass energy emission reduction, and the research results have been based on the principle of "Delayed use of bioenergy crops might threaten climate and food.
To meet the Paris Agreement target of limiting warming to 2°C by the end of the century, many future emission reduction scenarios assume that they will exceed the established temperature target in the short term, and short-term climate reductions will be achieved in the second half of this century through the implementation of large-scale biomass energy with carbon capture and storage (BECCS
In order to solve the above problems, they introduced a negative carbon emission reduction technology based on BECCS in the Earth system model, and used global observation data to calibrate crop yields to the average growing season temperature and atmosphericCO2 The response relationship between concentration, nitrogen fertilization intensity and precipitation, and through the establishment of a global future socio-economic scenario big data set, on the basis of sharing socio-economic path emission reduction, considering the implementation of large-scale BECCS negative carbon technology and other low-carbon technologies in different time periods from 2030 to 2100, and considering the comprehensive schemes of expanding agricultural land, enhancing nitrogen fertilization intensity, improving fertilization efficiency, afforestation, and international food trade, etc.
By establishing a positive feedback mechanism between crop yields per acre and climate change, the study reduces the emission reduction potential of future long-term negative carbon technologies, and highlights the importance of
