Simulating karst spring discharge and land use change impacts in a recharge area is strategic for water resource management in many countries worldwide. We introduce a user-friendly modeling environment by integrating the recently proposed LuKARS (Land use change modeling in KARSt systems) model into the FREEWAT (FREE and Open Source Software Tools for WATer Resource Management) framework. LuKARS is a rainfall-discharge model for karst systems that simulates the impact of land use changes by changing the area of dominant hydrotopes, i.e. landscape units with homogeneous soil and land use properties. FREEWAT is a free and open source toolkit for water resource management implemented in QGIS desktop application. The integration of LuKARS into FREEWAT takes advantage of the GIS capabilities to map, visualize and change the relevant hydrotope shapefiles. FREEWAT provides a modular framework for pre- and post-processing tools that facilitate the setup, calibration, analysis, storage and sharing of LuKARS models.

在全球许多国家，模拟补给区的喀斯特泉水排放量和土地利用变化影响对水资源管理具有战略意义。通过将最近提出的LuKARS（在KARSt系统中进行土地使用变化建模）模型集成到FREEWAT（用于WATer资源管理的免费和开源软件工具）框架中，我们引入了用户友好的建模环境。LuKARS是一种用于岩溶系统的降雨-排放模型，通过改变主要水位面（即具有均质土壤和土地利用特性的景观单元）的面积来模拟土地利用变化的影响。FREEWAT是在QGIS桌面应用程序中实现的用于水资源管理的免费开源工具包。将LuKARS集成到FREEWAT中可利用GIS功能进行地图绘制，可视化并更改相关的水面形状文件。FREEWAT提供了用于预处理和后处理工具的模块化框架，这些工具有助于LuKARS模型的设置，校准，分析，存储和共享。