World soils

Lai, R. In World Soil Erosion and Conservation Pimentel, D., Ed. Cambridge University Press Cambridge, UK, 1991. 

Plate 3. Global soil regions. (Courtesy of US Department of Agriculture, Natural Resources Conservation Service, Soil Survey Division, World Soil Resources.)... 

Figure 1.8. Cracks, surface mulch and soil structure in a Vertisol during the dry season (from FAO, 2001. Reprinted from World Soil Resources Reports 94, P. Driessen, J. Deckers, O. Spaargaren, F. Nachtergaele, eds., p80, Copyright (2001), with permission from FAO)...

Table 2.1. Concentrations of trace elements in the earth s crust, rocks, and world soils ... 

Table 9.3. Potential anthropogenic inputs in world soils and global metal burden per capita3... 

Table 9.4. Trace element contents of the lithosphere and world soils (mg/kg) (Data from Han et al. 2002a, with kind permission of Springer Science and Business Media)...

FAO (1998) World reference base for soil resources. World soil resources report 84. FAO, Rome, Italy, 88 pp... 

Gamble, T. N., Betlach, M. R., and Tiedje, J. M. (1977). Numerically dominant denitrifying bacteria from world soils. Appl. Environ. Microbiol. 33, 926-939. 

FAO 2001. Soil Carbon Sequestration for Improved Land Management. World Soil Resources Report 96, Rome. 

Lai, R. (2001). Managing world soils for food security and environmental quality. Adv. Agron. 74,155-192. 

The required reduction therefore amounts to only a tiny fraction of the theoretical sequestration potential of the world soils. Although evaluation and certification of emission credits for sequestration of C in the terrestrial biosphere is certainly difficult (Marland et al., 2001), it is worthwhile to consider C sequestration in developing possible mitigation plans. 

Andreux, F. (1996). Humus in world soils. In Humic Substances in Terrestrial Ecosystems, Piccolo, A., ed., Elsevier, Amsterdam, pp. 45-100. 

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