Hybrid neuro fuzzy inference systems for simulating catchment sediment yield

IF 3.5 2区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Mahdi Sedighkia , Manizheh Jahanshahloo , Bithin Datta
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Abstract

Increasing sediment yield is one of the important environmental challenges in river basins resulting from changing land use. The current study develops an adaptive neuro fuzzy inference system (ANFIS) hybridized with evolutionary algorithms to predict annual sediment yield at the catchment scale considering some key factors affecting the alteration of the sediment yield. The key factors consist of the area of the sub-catchments, average slope of the sub-catchments, rainfall, and forest index, and the output of the model is sediment yield. Several indices such as the Nash–Sutcliffe efficiency (NSE), root mean square error and vulnerability index (VI) were applied to evaluate the performance of the models. Moreover, hybrid models were compared in terms of complexities to select the best approach. Based on the results in Talar River basin in Iran, several hybrid models in which particle swarm optimization (PSO), genetic algorithm, invasive weed optimization, biogeography-based optimization, and shuffled complex evolution used to train the neuro fuzzy network are able to generate reliable sediment yield models. The NSE of all previously listed models is more than 0.8 which means they are robust for assessing sediment yield resulting from land use change with a focus on deforestation. The proposed models are fairly similar in terms of computational complexities which implies no priority for selecting the best model. However, PSO-ANFIS performed slightly better than the other models especially in terms of accuracy of the outputs due to a high NSE (0.92) and a low VI (1.9 Mg/ha). Using the proposed models is recommended due to the lower required time and data compared to a physically based models such as the The Soil and Water Assessment Tool. However, some drawbacks restrict the application of the proposed model. For example, the proposed models cannot be used for small temporal scales.

模拟集水区泥沙产量的混合神经模糊推理系统
由于土地利用方式的改变,泥沙产量不断增加,这是河流流域面临的重要环境挑战之一。本研究开发了一种与进化算法相混合的自适应神经模糊推理系统(ANFIS),用于预测流域范围内的年泥沙量,其中考虑到了影响泥沙量变化的一些关键因素。关键因素包括子流域面积、子流域平均坡度、降雨量和森林指数,模型的输出为泥沙产量。应用纳什-苏特克利夫效率(NSE)、均方根误差和脆弱性指数(VI)等指数来评估模型的性能。此外,还对混合模型的复杂性进行了比较,以选择最佳方法。根据伊朗塔拉尔河流域的研究结果,粒子群优化(PSO)、遗传算法、入侵杂草优化、基于生物地理学的优化以及用于训练神经模糊网络的洗牌复杂进化等几种混合模型能够生成可靠的泥沙产量模型。之前列出的所有模型的 NSE 都大于 0.8,这意味着它们在评估以森林砍伐为重点的土地利用变化所导致的沉积物产量方面是稳健的。就计算复杂性而言,所提出的模型相当相似,这意味着在选择最佳模型时没有优先权。不过,PSO-ANFIS 的表现略好于其他模型,尤其是在输出的准确性方面,因为其 NSE 值高(0.92),VI 值低(1.9 兆克/公顷)。与基于物理的模型(如水土评估工具)相比,由于所需的时间和数据较少,建议使用建议的模型。然而,一些缺点限制了拟议模型的应用。例如,建议的模型不能用于小时间尺度。
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来源期刊
International Journal of Sediment Research
International Journal of Sediment Research 环境科学-环境科学
CiteScore
6.90
自引率
5.60%
发文量
88
审稿时长
74 days
期刊介绍: International Journal of Sediment Research, the Official Journal of The International Research and Training Center on Erosion and Sedimentation and The World Association for Sedimentation and Erosion Research, publishes scientific and technical papers on all aspects of erosion and sedimentation interpreted in its widest sense. The subject matter is to include not only the mechanics of sediment transport and fluvial processes, but also what is related to geography, geomorphology, soil erosion, watershed management, sedimentology, environmental and ecological impacts of sedimentation, social and economical effects of sedimentation and its assessment, etc. Special attention is paid to engineering problems related to sedimentation and erosion.
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