Cool Farming: Climate impacts of agriculture and mitigation potential

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3. Greenhouse gas emissions from specific agricultural practices Table 3: Energy requirement and carbon dioxide emissions resulting from the production of different fertilisers. Fertiliser Energy requirement in MJ kg -1 N Carbon dioxide emissions in kg (CO2)/kg produced* Nitrogen 65 – 101 3.294 – 6.588 Phosporus 15 0.366 – 1.098 Potassium 8 0.366 – 0.732 Lime 0.110 – 0.842 Manure 0.026 – 0.029 N as manure a 0.6 – 2.9 Data from (Lal, 2004c); *includes transportation, storage and transfer of agricultural chemicals. a Manure has a nitrogen content of between 1 and 4.5% (Moreno-Caselles et al., 2002), therefore the CO2 emissions per kg of N have been given here. Table 4: Total annual GHG emissions from the production of fertilisers (Kongshaug, 1998). World 18 N P K Consumption in Pg 0.083 0.014 0.017 Total emissions in kg CO2-eq per kg of fertiliser produced Average 3.14 0.7 0.75 Best Europe 1.6 -1.4 0.25 Consumption in Pg 0.011 0.001 0.005 Total emissions in kg CO2-eq per kg of fertiliser produced Average 5.3 0.04 0.15 Best Total emissions in kg CO2-eq per kg 2.45 -0.1 0.06 of fertiliser produced (Includes transport and storage*) 3.30 – 6.6 0.36 – 1.1 0.36 – 0.73 Total emissions in Pg CO2-eq 0.27-0.55 0.005-0.015 0.006-0.012 *(Lal, 2004c)
Figure 3. Rate of chemical fertiliser use in arable land in China in comparison with the rest of developing countries, Europe, North America and the world. Application rate, kg ha -1 year -1 250 200 150 100 50 0 1960 1965 1970 China Developing Countries Europe North America World 1975 “Rate of chemical fertiliser use in arable land (including permanent crop land) in China in comparison with the rest of developing countries, Europe, North America and the world. The rates are based on N for nitrogen, P2O5 for phosphorous, and K2O for potassium. Data source: FAO (2002).” Copied from (Yang, 2006). 1980 1985 1990 1995 2000 2005 Figure 4. World nitrogen fertiliser consumption in regions. Million tonnes nitrogen 90 80 70 60 50 40 30 20 10 0 1970 1975 World East Asia 1981 South Asia North America ©Greenpeace/Peter Solness Eastern Europe & Central Asia Central Europe West Europe Nitrogen fertiliser consumption in selected regions and world total. Source IFA statistics. 1987 1993 1999 2005 19
Page 1 and 2: Cool Farming: Climate impacts of ag
Page 3 and 4: Contents Executive Summary 5 1 Intr
Page 5 and 6: Executive Summary Overall finding a
Page 7 and 8: Figure 2. sources of agricultural g
Page 9 and 10: Mitigation Agriculture has a signif
Page 11 and 12: ©Greenpeace/D Beltrá 11
Page 13 and 14: 2. Greenhouse gas emissions from ag
Page 15 and 16: In Latin America and the Caribbean,
Page 17: 3. Greenhouse gas emissions from sp
Page 21 and 22: Figure 5. Changes in carbon stock f
Page 23 and 24: 3.2.1 Historic and future trends La
Page 25 and 26: 4. Impacts of intensive animal farm
Page 27 and 28: Currently, meat consumption is stil
Page 29 and 30: Organic field crops and animal prod
Page 31 and 32: Generally, the impact of mitigation
Page 33 and 34: The sequestration of carbon into ag
Page 35 and 36: observed (Wassmann et al., 2004). T
Page 37 and 38: 7. References Akiyama H., Yagi K. a
Page 39 and 40: Furukawa Y., Inubushi K., Ali M., I
Page 41 and 42: Mutuo, P.K., G. Cadisch, A. Albrech
Page 43 and 44: Tzilivakis, J., D. J. Warner, M. Ma

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