Abandonment of agriculture

In some portions of the world, desert soils have been cultivated (usually with irrigation) and later abandoned. The cessation of agriculture may be due to salinization of the soil or simply to economic factors such as increasing cost of irrigation. Frequently these abandoned sites are not revegetated by native plants, at least not rapidly. The slow or absent successional recovery is attributed to soil degradation (e.g. Jackson et at. 1991; Shaltout 1994) and in some cases to pre-emption by weedy species (Shaltout 1994).

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