||World Desertification: Cause and Effect. A Literature Review and Annotated Bibliography.
Sherbrook, Wade C. ;
Paylor, Patricia ;
||Arizona Univ., Tucson. Office of Arid Lands Studies.
||Arid Lands Resource-IP-3; DI-14-31-0001-3729; OWRR-W-141(3729); 04461,; W-141(3729)(3)
Land use ;
Arid land ;
Land reclamation ;
Soil erosion ;
Grazing land ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||An annotated bibliography is presented of 252 references, computer-produced from the University of Arizona's Arid Lands Information System (ALIS), with accompanying text that reviews briefly both cause and effect of world desertification. Causes fall into two categories: long-term (in the geologic sense) climatic change as supported by meteorological, archaeological, gemorphological, vegetational, palynological, and dendrochronological evidence in the literature; and those activities of man's historic occupance of arid and semiarid regions that have contributed to degeneration of marginal lands: agricultural and irrigation practices, grazing, fire, nomadism, and sand stablization and reforestation. Beyond these two categories, there is a third: climatic fluctuation - - short-term weather patterns induced by uncertain rainfall and followed by cyclic droughts from which marginal areas may not recover is subjected to continued attempts at intensive use that cannot be sustained by a dry year or a succession of dry years. Portions of this document are not fully legible.
||Develops the two schools of thought held to be responsible for desert encroachment.
|PUB Date Free Form
||8F; 13B; 48B#
||PC A09/MF A01