Assessment of the resource and environmental effects of China's grain loss and waste in 2022
Scientific and comprehensive measurement of the resource and environmental impacts arising from grain loss and waste is the basis for devising policies aimed at optimizing grain conservation and mitigating losses,while advancing sustainable development strategies.Based on the Life Cycle Assessment method,input-output analysis,and emission coefficient method,the resource and environmental effects of China's grain loss and waste in 2022 and the resource and environmental benefits under the potential of grain saving and loss reduction are evaluated.The research reveals that:1)China's grain loss and waste have directly caused the production resources waste,which is equivalent to the annual wastes of 17.30 million hectares(10.18%)of cultivated land and 65.78 billion cubic meters(10.97%)of water resources,and have led to a large number of invalid inputs of agricultural materials such as chemical fertilizers,pesticides,and agricultural films.2)China's grain loss and waste have caused indirectly the waste of energy in other sectors,including a large number of coal,crude oil,and electricity,which is equivalent to a total of 13.04 million tons of standard coal energy.3)China's grain loss and waste have led to an additional carbon emissions of 127.05 million tons of carbon dioxide equivalent,accounting for 20%of China's total carbon emissions from grain production.4)If the current poten-tial reduction target(5.46%)can be achieved,it will save 5.24 million hectares of sowing land and 18.11 billion cubic meters of water,and reduce 1.99 million tons of fertilizer and other agricultural inputs,3.87 million tons of standard coal energy consumption,being equivalent to 37.67 million tons of carbon dioxide equivalent carbon emissions,thereby obtaining huge resource and environmental benefits.In the future,we should strengthen the grain saving and loss reduction through scientific and technological innovation,publicity and education,legal regulation,and other means to ensure food security and build a resource-saving and envi-ronment-friendly society.
grain loss and wasteresource and environmental effectscarbon emissionsfood security
万方数据
维普
