Climate and Energy
The IAASTD argues that reducing agriculture‘s dependence on fossil fuel energy must become a priority. In addition, enormous potential lies in the optimisation and replacement of plant-based fuels, such as firewood which in Africa is still the most widespread energy source for cooking. Many of these measures would not only reduce CO2 emissions, but would also help agriculture to better adapt to future climate changes and to conserve natural resources and biodiversity. They could also bring economic benefits. Such win-win measures could help trigger a climate-friendly global shift in agriculture. However, the IAASTD stresses that individual measures to cut CO2 emissions must be adapted to the respective local conditions. The report clearly warns that they cannot be exclusively assessed according to climate aspects while disregarding contexts, indirect consequences as well as the impact with respect to other ecological and social targets. According to the IAASTD, “silver bullet” or global solutions in this context do not exist.
Increasing food energy efficiency
A secure, global solution does exist however when it comes to increasing food energy efficiency and the question of how many calories of fossil energy input are needed to produce one calorie of food that is actually consumed. As long as 30 to 50% of all foodstuffs in industrialised countries are simply being thrown away in factories, retail, restaurants and private households, and up to 30% of agricultural production in many tropical and low-income countries is lost after harvest before it can be processed, it is here that the largest efficiency gains could be achieved. Public awareness of food losses and waste has increased remarkably over the past years.
Although agriculture is a key factor in the avoidance of emissions and the possible sequestration of carbon, it tends to be largely neglected in national and international climate protection strategies. The majority of the billions of agricultural subsidies paid by industrialised and emerging countries continue to promote cultivation and production methods, consumer habits and trade flows which all contribute to global warming. Development cooperation in agriculture is also still pursuing obsolete strategies, which focus on increasing yields through higher energy input, particularly through agrochemicals, but also through mechanisation, irrigation and business specialisation, for example by separating crop cultivation and livestock farming instead of integrating both.
The IAASTD calls for a fundamental change to agricultural and trade policies so that they adapt to the international community’s climate targets. Cultivation methods which are low in emissions and store carbon, as well as climate-friendly forms of production and consumption must be incorporated into current international climate negotiations."On a global scale, carbon sequestration in soils has the potential to offset from 5 to 15% of the total annual CO2 emissions from fossil fuel combustion in the near-term." (Global, p. 190)