Degradation of land reaching critical global proportions.
D000383:Agriculture; D003247:Conservation of Natural Resources; D003710:Demography; D003906:Developing Countries; D004467:Economics; D004526:Efficiency; D004777:Environment; D004787:Environmental Pollution; D005193:Family Planning Services; D005843:Geography; D011153:Population; D011157:Population Dynamics
Agriculture; Carrying Capacity; Developing Countries; Economic Development; Economic Factors; Environment; Environmental Degradation; Family Planning--beneficial effects; Geographic Factors; Land Supply; Macroeconomic Factors; Natural Resources; Population; Population Pressure; Productivity; Soil Degradation; Spatial Distribution; World