南非土壤，土地覆盖和天气生成器文件数据库为SWAT应用程序

IF 5 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-04-16 DOI:10.1016/j.ejrh.2025.102387

Jay le Roux , Ndifelani Mararakanye , Michael van der Laan , Leushantha Mudaly , Harold Louw Weepener , Johan van Tol

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引用次数: 0

摘要

研究区域：南非。该研究的重点是为南非的水土评估工具（SWAT）应用开发土壤、土地覆盖和天气生成器文件数据集。第一个目标是格式化国家数据集，作为在南非运行SWAT模型的基线。第二个目标是通过在四个（以前模拟的）研究流域应用国家数据集来评估基线输入数据的性能。输入数据集包括在南非运行ArcSWAT或QSWAT（分别为ArcGIS中的SWAT和QGIS中的SWAT+的图形用户界面）的全国范围内的地理空间数据集，包括：SWAT集水区轮廓数据（三级和四级）；20-30 m分辨率的土地覆盖图，包括与SWAT土地覆盖代码相关的南非国家土地覆盖（2014、2018、2020）；基于南非土地类型数据库土壤转移函数SWAT属性数据的1:25万比例尺土壤地图从南非农业研究理事会获得的12个气象站的天气统计数据（WGN）文件。国家基线数据通过协助建模人员在南非建立和运行SWAT模型，是在水文建模方面向前迈出的重要一步。

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South African soil, land cover and weather generator file databases for SWAT applications

Study region

South Africa.

Study focus

The focus of the study is to develop soil, land cover and weather generator file datasets for Soil and Water Assessment Tool (SWAT) applications in South Africa. The first objective was to format national datasets for use as baseline to run the SWAT model in South Africa. The second objective was to evaluate the performance of the baseline input data by applying the national datasets in four (previously simulated) research catchments.

New hydrological insights for the region

The input datasets comprise of geo-spatial datasets at a national scale to run ArcSWAT or QSWAT (graphical user interface for SWAT in ArcGIS and SWAT+ in QGIS, respectively) in South Africa including: SWAT catchment outline data (tertiary and quaternary); Land cover maps at 20–30 m resolution including South African National Land Cover (2014, 2018, 2020) linked to SWAT land cover codes; A soil map with SWAT attribute data derived from pedotransfer functions of the Land Type Database of South Africa useable at a scale of 1:250,000; Weather statistics (WGN) files for 12 weather stations obtained from the Agricultural Research Council in South Africa. The national baseline data is an important step forward in hydrological modelling by assisting modellers to set-up and run the SWAT model in South Africa.

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来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.