Pattern and behaviour of gully erosion in Shiwaliks of lower Himalayas

摘要

A study on behaviour and pattern of gully erosion in foothills of Shiwaliks of lower Himalayas was conducted in 68 micro-catchments. The average gully density was 19.8 km/km~2 and the average gully texture was 839 /km~2 observed in the region. The average length of 1st order gullies, which are primary points of runoff water collection, was 60.7 %, whereas the average number of 1st order gullies was 74.3 %. A bifurcation ratio of 3.4 was observed between first and second order gullies for whole of theregion. Temporal study of gully development suggests relatively higher increase in gully depth as compared to their length or width.