Application of geomorphic principles to environmental management in semiarid regions
The incision of gullies into valley alluvium is a severe soil conservation problem, resulting in deterioration of agricultural land, sediment pollution, filling of reservoirs, and water table lowering in the valley floor. Therefore, it is of importance to identify as accurately as possible those valleys which are prone to gullying, in order to establish priorities for soil conservation treatment within a geomorphically similar area. In other words, what is needed is an operational definition of the geomorphic threshold above which gully incision into the valley alluvium occurs. In many valleys ...
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