(')Marin Drăcea' National Institute for Research and Development in Forestry, 13 Closca Street, 500040, Brasov, Romania; Transilvania University of Brașov, 29 Eroilor Bulevard, 500036, Brasov, Romania.
Transilvania University of Brașov, 29 Eroilor Bulevard, 500036, Brasov, Romania.
Environ Res. 2020 May;184:109330. doi: 10.1016/j.envres.2020.109330. Epub 2020 Feb 29.
The present study evaluates the applicability performance of the Soil and Water Assessment Tool (SWAT) in small forested watersheds (less than 1000 km). This open-source software is widely used in investigations focused on water availability and quality. Overall, SWAT model performance ranges between satisfactory to good. Normally, underestimates daily peak discharges. The limitations of the model are related to the accuracy of climate data used and to the time period used for validation. Watershed area, forest cover and streamflow spatial distribution have an important influence on modeling processes. Overall, from the analyzed studies, we observed for discharge a decreasing tendency, more pronounced towards the end of the 21st century (up to -54%). For surface runoff, was noticed the same decreasing tendency up to 41%. Regarding sediment yield, the results vary within very wide limits. These findings vary according to watershed location, scenarios adopted, and the eligible period of time.
本研究评估了土壤和水评估工具（SWAT）在小森林流域（小于 1000 平方公里）中的适用性性能。这个开源软件广泛应用于关注水资源可用性和质量的研究中。总体而言，SWAT 模型的性能在令人满意到良好之间。通常，它低估了每日峰值流量。模型的局限性与所用气候数据的准确性以及用于验证的时间段有关。流域面积、森林覆盖率和径流水文空间分布对建模过程有重要影响。总的来说，从分析的研究中，我们观察到排放呈下降趋势，在 21 世纪末更为明显（高达-54%）。对于地表径流，也注意到相同的下降趋势，直到 41%。关于泥沙产量，结果变化幅度很大。这些发现根据流域位置、采用的情景以及合适的时间段而有所不同。
