Effect on sediment delivery ratio by changes in land use land cover and construction of hydraulic structures at sub basin scale

IF 1.4 Q4 WATER RESOURCES

Journal of Applied Water Engineering and Research Pub Date : 2021-06-03 DOI:10.1080/23249676.2021.1932617

B. R. Joshi, S. Yadav

引用次数: 0

Abstract

Many areas of the world are particularly vulnerable to sedimentation. Determining the amount of soil erosion and sediment rate from watersheds would be the first step in reducing sedimentation. Soil and Water Analysis Tool (SWAT) based on Geographic Information System (GIS) was used to determine sediment yield and Sediment Delivery Ratio (SDR). This paper’s main objective is to assess the impact of land-use change on SDR at the sub-basin scale. Land-use changes indicated a vast reduction of 19% in the forest area, which causes an increase in agricultural land and commercial land. Therefore, SDR must be increased, but the study area’s average SDR trend is decreasing from 1985 to 2015. But, sub-basin-scale, sub-basins no. 17, 18, and 24 are decreasing from 1985 to 2005 and increasing from 2005 to 2015.

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土地利用-土地覆盖变化和次流域尺度水工建筑物建设对输沙率的影响

世界上许多地区特别容易受到沉积的影响。确定流域的土壤侵蚀量和沉积速率将是减少沉积的第一步。利用基于地理信息系统（GIS）的土壤和水分析工具（SWAT）来确定产沙量和输沙率（SDR）。本文的主要目的是在次流域尺度上评估土地利用变化对SDR的影响。土地利用的变化表明，森林面积大幅减少了19%，这导致了农业用地和商业用地的增加。因此，SDR必须增加，但从1985年到2015年，研究区域的平均SDR趋势正在下降。但是，从1985年到2005年，17号、18号和24号亚盆地的规模在减少，从2005年到2015年，规模在增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Water Engineering and Research WATER RESOURCES-

CiteScore

2.90

自引率

16.70%

发文量

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