气候变化领域集成服务门户(CCPortal): Evaluating the effects of DEM and soil data resolution on streamflow and sediment yield simulations in the Upper Blue Nile basin

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DOI	10.1007/s10661-023-12189-3
	Evaluating the effects of DEM and soil data resolution on streamflow and sediment yield simulations in the Upper Blue Nile basin
	Dile, Yihun T.; Bayabil, Haimanote K.; Ayana, Essayas K.; Worqlul, Abeyou W.; Srinivasan, Raghavan; Lefore, Nicole; Berihun, Mulatu Liyew
发表日期	2024
ISSN	0167-6369
EISSN	1573-2959
起始页码	196
结束页码	1
卷号	196 期号:1
英文摘要	While the availability of big data on biophysical parameters through citizen science and/or from public/private sources is expected to help in addressing data scarcity issues, there is little understanding of whether and/or how such data will improve watershed simulations. This research aimed to evaluate whether improvements in resolutions of Digital Elevation Model (DEM) and soil data will enhance streamflow and sediment yield simulations and thereby improve soil and water management decisions. The study was conducted in two different-sized watersheds (Anjeni and Gilgel Abay with similar to 1 km(2) and similar to 1655 km(2) area, respectively) in the Upper Blue Nile basin in Ethiopia. Effects of DEM and soil data resolutions on streamflow and sediment yield were evaluated using the Soil and Water Assessment Tool (SWAT). The results showed that the effect of DEM and soil data resolution on streamflow and sediment yield simulation was scale dependent finer resolution DEM and soil datasets improved streamflow and sediment yield simulations in the smaller Anjeni watershed, whereas DEM resolution had no effect in the bigger Gilgel Abay watershed. Small watersheds are often used to understand watershed processes, and thus the use of finer-resolution spatial data for watershed simulations could result in better results. Findings from the smaller Anjeni watershed suggested that the combined use of finer resolution DEM and soil data could potentially improve sediment yield simulations although the lack of observed sediment yield data did not allow verification of this at the larger Gilgel Abay watershed.
英文关键词	Watershed; Water resources; Soil and water management; SWAT; Ethiopia
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001128125200003
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299152
作者单位	Texas A&M University System; Texas A&M University College Station; State University System of Florida; University of Florida; Texas A&M University System; Texas A&M University System; Texas A&M University College Station; Texas A&M AgriLife Research
推荐引用方式 GB/T 7714	Dile, Yihun T.,Bayabil, Haimanote K.,Ayana, Essayas K.,et al. Evaluating the effects of DEM and soil data resolution on streamflow and sediment yield simulations in the Upper Blue Nile basin[J],2024,196(1).
APA	Dile, Yihun T..,Bayabil, Haimanote K..,Ayana, Essayas K..,Worqlul, Abeyou W..,Srinivasan, Raghavan.,...&Berihun, Mulatu Liyew.(2024).Evaluating the effects of DEM and soil data resolution on streamflow and sediment yield simulations in the Upper Blue Nile basin.ENVIRONMENTAL MONITORING AND ASSESSMENT,196(1).
MLA	Dile, Yihun T.,et al."Evaluating the effects of DEM and soil data resolution on streamflow and sediment yield simulations in the Upper Blue Nile basin".ENVIRONMENTAL MONITORING AND ASSESSMENT 196.1(2024).