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首页> 外文期刊>Archives of Agronomy and Soil Science >Run-off and sediment yield in relation to differential gully-plugging schemes in micro-catchments of Shiwaliks in the lower Himalayas.
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Run-off and sediment yield in relation to differential gully-plugging schemes in micro-catchments of Shiwaliks in the lower Himalayas.

机译：下喜马拉雅山西瓦里克斯小流域的径流和沉积物产量与差异性冲沟方案有关。

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摘要

Gully-management strategies adopted in the Shiwalik range of hills in the lower Himalayas of India, which involve treatment of only higher order gullies, have not been successful. A study was conducted in the four selected micro-catchments in the region to monitor run-off and sediment yield variations in relation to differential gully-plugging schemes. One of the study catchments (catchment III) with highest run-off and sediment yield was selected for an alternative scheme of gully management. In this, all the first-order and 25-30% of the second-order gullies were plugged with locally available stones, and native grass vegetation wasplanted on the upstream side. Other catchments (catchments I, II and IV) were treated as per the conventional method of gully plugging involving the installation of loose stone check dams in the highest order gullies. The highest run-off coefficient (15.5%) for the period 2000-2006 was registered in catchment III. However, this decreased to 12.8% during 2007, when the catchment was treated using an alternative gully-management scheme. The sediment yield from catchment III decreased by 20% in 2007 from 15.2 t ha-1 during 2000-2006. The results indicate that to control gully erosion, lower order gullies should be treated as a priority.Digital Object Identifier http://dx.doi.org/10.1080/03650340.2011.577422
机译：在印度喜马拉雅山下游的Shiwalik山丘中采用的沟壑管理策略仅涉及对高阶沟壑的处理，但并未取得成功。在该地区的四个选定的小流域进行了一项研究，以监测径流和沉积物产量与差异性沟渠堵塞方案相关的变化。选择了其中一个径流和沉积物产量最高的研究集水区（集水区III）作为沟渠管理的替代方案。在这种情况下，所有一阶和二阶沟渠中的25％至30％都被当地可用的石头塞住了，在上游种植了天然草木。其他集水区（集水区I，II和IV）按照常规的沟渠堵漏方法进行处理，包括在最高阶的沟渠中安装松散的石头止水坝。流域III记录了2000-2006年期间最高的径流系数（15.5％）。但是，在2007年采用集水沟管理方案处理流域时，这一比例下降到12.8％。流域III的沉积物产量从2000年至2006年的15.2 t ha -1 在2007年下降了20％。结果表明，要控制沟壑侵蚀，应优先考虑低阶沟壑。数字对象标识符http://dx.doi.org/10.1080/03650340.2011.577422

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