Losing ground
1976
Eckholm, Erik P.
Abstract: The loss of productive soil through erosion, salination, desertification, and other consequences of ecologically unsound land use is an environmental problem confronting a number of countries, particularly in the developing world. Ways in which food systems are being ecologically undermined are surveyed and analyzed. Concrete examples of serious ecological deterioration that is taking place through deforestration, overgrazing, soil erosion and abandonment, desertification, the silting of irrigation systems and reservoirs, and changes in frequency and severity of flooding are provided. The increased intensity of humanity is pressure on the land and short-sighted use practices are compounded by natural phenomena. Destruction of land decreases future world feeding capacity which increases the threat of both malnutrition and mental deficiency.
显示更多 [+] 显示较少 [-]