Effect of vegetation and engineering control structures on surface runoff and sediment yield at Fizagat, Swat
Effect of vegetation and engineering control structures on surface runoff and sediment yield at Fizagat, Swat
Syed Zainul Arifeen and Abdul Khaliq Chaudhry
ABSTRACT
This study was conducted to evaluate the effect of
different soil conservation measures, both biological
and engineering on surface runoff and sediment yield in
five contiguous small catchments having almost similar
slopes and soil characteristics. Different treatments
namely; mix plantation with engineering techniques, mix
plantation, pure chir pine plantation with engineering
techniques and pure chir pine plantation with range land
improvement practices were randomly applied to four
sub-catchments, while the 5th one was kept untreated and
open to grazing. Nine year's (1986-1995) average data
showed that both the hydrologic response and sediment
yield from the catchment treated with mix plantation and
engineering technique was less than half as compared to
other treatments. This response was much higher in the
catchment untreated and kept open to grazing. The
analysis of variance showed that hydrological response
and sediment concentration was significant and non
significant at 5% level, respectively.
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March 1997
Vol. 47, Iss. 1
