Titlebook: Advances in Soil Science; Soil Restoration Vol Rattan Lal,B. A. Stewart Book 1992 Springer-Verlag New York Inc. 1992 Fauna.Soil fertility.e

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Reclamation of Indurated, Volcanic-Ash Materials in Latin America, reserves may be equally serious, but it has not attracted the same degree of international interest. Per-capita food production has been declining in Latin America since 1970, partly because land is being taken out of production; the per-capita number of hectares of arable land in developing nation

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Creation and Restoration of Wetlands: Some Design Consideration for Ecological Engineering,ribed as the kidneys of the landscape for the biogeochemical and hydrologic roles that they provide (Mitsch and Gosselink, 1986). They prevent floods, cleanse waters, protect shorelines, and recharge groundwater aquifers. Just as important to some, wetlands provide haven for a wide variety of flora

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Research and Development Priorities for Soil Restoration,tal degradation. Agriculturally marginal and unsuitable lands, used for food crop production because of land hunger, are being further degraded even to the point of no return from irreversible degradation. For these regions where land resources are insufficient to substantially meet needs, even with

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Book 1992rop productivity even though fertilizers and other inputs often result in increased yields in the short term. Soil degradation also leads to environ- mental pollution. A decrease in soil quality invariably leads to a decrease in water quality, and often in air quality. While there is a clear consens