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The Soil Conservation Society of America defines a gully as “a channel or miniature valley cut by concentrated runoff but through which water commonly flows only during and immediately after heavy rains. It may be dendritic or branching or it may be linear, rather long, narrow and of uniform width”.
Gully erosion is the advance stage of channel or rill erosion in which the size of rill is enlarged which can not be smoothened by ordinary tillage implements. Process of gully formation follows sheet and rill erosion.
Gully, trench cut into land by the erosion of an accelerated stream of water. Various conditions make such erosion possible: the natural vegetation securing the soil may have been destroyed by human action, by fire, or by a climatic change; or an exceptional storm may send in torrents of water down.
Oct 31, 2005 · Gully erosion is not a process limited to badlands, mountainous and hilly regions but a global and serious cause of land degradation affecting a wide variety of soils prone to crusting and/or piping. (2) Gully erosion results not only from surface flow but also often from sub-surface flow. (3)
Gully erosion is localized in the Coastal Plain Sands, Nanka Sands, and Nsukka Sandstone of the Anambra-Imo basin region. The most affected deposits are unconsolidated or poorly consolidated and have short dispersion times.
Gully erosion (Fig. 6) occurs where concentrated surface water scour out the regolith and underlying rock with the debris being either deposited downslope or transported into river systems creating major downstream problems. The gully form and severity is very dependent on the rock type.
Gully erosion is one of the most important types of water erosion that causes the destruction of agricultural and range lands in arid and semiarid areas.
Nov 9, 2020 · Gully erosion is a major environmental problem, posing significant threats to sustainable development. However, insights on techniques to prevent and control gullying are scattered and incomplete, especially regarding failure rates and effectiveness.
affected by gully erosion include the foothills of the Lesser Himalayas (Siwaliks) in the northwest and the Chhotanagpur Plateau and sur-roundings in Eastern India (Ahmad, 1973, p. 44; Haigh, 1984) (Figure 1). Gullies and badlands occur in a multitude of soilscapes in India (Figure 1 insets).
Gully erosion is a widespread and often dramatic form of soil erosion caused by flowing surface water. It consists of open, unstable channels that have been cut more than 30 centimetres deep into the ground. Gully erosion is a result of the interaction of land use, climate and slope.
