Salinity is a complex process in watersheds, and there is a need for data and modeling salinity in arid and semi-arid watersheds. Development and application of a salinity model to accurately predict the salinity processes are difficult tasks at the watershed scale. Available salinity models are limited in sufficiently modeling natural salinity processes in watersheds. In this study, a salinity module is proposed for the Soil and Water Assessment Tool (SWAT) utilizing new salinity equations to model natural salinity processes in watershed systems. Data related to the distribution maps of saline formations is used in the modeling process. An advantage of this module is that it can use low-quality maps for salinity modeling of different salts. The proposed methodology can be used to assess the impacts of management practices, climate change, and land-use changes on non-point source pollution at a watershed scale.

盐度是流域中的一个复杂过程，因此需要对干旱和半干旱流域中的盐度进行数据和建模。在分水岭范围内，开发和应用盐度模型以准确预测盐度过程是艰巨的任务。在对流域的自然盐分过程进行充分建模的过程中，可用的盐分模型受到限制。在这项研究中，为土壤和水评估工具（SWAT）提出了一个盐度模块，该模块利用新的盐度方程来模拟分水岭系统中的自然盐度过程。在建模过程中使用了与盐分分布图有关的数据。该模块的优势在于它可以将低质量的图用于不同盐的盐度建模。拟议的方法可用于评估管理实践，气候变化，