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引用次数: 0
摘要
本文系统地介绍了泥沙输沙与侵蚀预测(STEP)模型。STEP模型在印度尼西亚中爪哇Kalisapi小流域以3.47 km × 3.47 km网格分辨率实施。分别于2003-2008年和2010-2014年进行了标定和验证。结果表明，STEP模型在校正期和验证期的月窗和年窗均具有满意的功能。在这两个时期，STEP模型都能产生丰富的年输沙率，在定标期和验证期R2分别为0.71和0.9。此外，STEP模型比广为人知的USLE模型表现出更公平的空间变异性。相应的，可以推测STEP模式能够在月和年时间尺度上模拟流域输沙的时空变化。
Development, implementation and validation of Sediment Transport and Erosion Prediction (STEP) model
The Sediment Transport and Erosion Prediction (STEP) model is methodically described in this paper. The STEP model was implemented at a 3.47 km × 3.47 km grid resolution in the Kalisapi sub-watershed, Central Java, Indonesia. It was calibrated and validated in the period of 2003–2008 and 2010–2014 respectively. The result shows that the STEP model functions satisfactorily at monthly and annual time window in the calibration and validation periods. In both periods, the STEP model is able to produce fruitful annual sediment transport rates with R2 values of 0.71 and 0.9 in the calibration and validation period respectively. Moreover, the STEP model exhibits more equitable spatial variability than that of the widely known USLE model. Correspondingly, it can be surmised that the STEP model is capable of simulating spatial and temporal variability of sediment transport from a watershed at monthly and annual time scales.
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Environmental Modelling & Software publishes contributions, in the form of research articles, reviews and short communications, on recent advances in environmental modelling and/or software. The aim is to improve our capacity to represent, understand, predict or manage the behaviour of environmental systems at all practical scales, and to communicate those improvements to a wide scientific and professional audience.
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