Centro de Investigaciones sobre Desertificación-CIDE (CSIC, UVEG, GV), Camí de la Marjal s/n, 46470 Albal, València, Spain.
J Environ Manage. 2012 Mar;95 Suppl:S31-6. doi: 10.1016/j.jenvman.2011.03.020. Epub 2011 Apr 8.
SALTIRSOIL (SALTs in IRrigated SOILs) is a model for the medium to long term simulation of soil salinity in irrigated, well-drained lands. Once the algorithms were verified, the objective of our study was to validate SALTIRSOIL under one of several water quality and management scenarios in Mediterranean agriculture. Because drip and surface are the most common irrigation systems in irrigated agriculture in Valencia (Spain), the validation was performed with climate, soil, irrigation water (composition and management) and crop (species and management) information from an experimental plot surface irrigated with well water and planted with watermelon that has been monitored since the late spring of 2007. To carry out the validation, first we performed a global sensitivity analysis (GSA). Second, we compared simulated soil saturation extract composition against measured data. According to the GSA, SALTIRSOIL calculations of soil salinity seem to be most affected by climate (rainfall and evapotranspiration) with 60% of explained soil salinity variance, water salinity with 26% of explained variance, and then irrigation with 4%. According to the closeness of the first comparisons between predictions and measurements, SALTIRSOIL does not seem to be affected by any systematic error, and as a consequence, neither inclusion of new parameters nor calibration of the others already included would be needed at least for surface irrigation. The validation of SALTIRSOIL continues under other water quality and irrigation management scenarios.
盐土（SALTs 在灌溉土壤中）是一种用于模拟灌溉、排水良好土地中土壤盐分的中长短期模型。一旦算法得到验证，我们的研究目标是在几种地中海农业的水质和管理情景下验证 SALTIRSOIL。由于滴灌和地表灌溉是瓦伦西亚（西班牙）灌溉农业中最常见的灌溉系统，因此，在使用井水灌溉和种植西瓜的实验田的气候、土壤、灌溉水（组成和管理）和作物（品种和管理）信息的基础上，对 SALTIRSOIL 进行了验证，该实验田自 2007 年春末以来一直在进行监测。为了进行验证，我们首先进行了全局敏感性分析（GSA）。其次，我们将模拟的土壤饱和浸提物组成与实测数据进行了比较。根据 GSA，SALTIRSOIL 对土壤盐分的计算似乎受气候（降雨量和蒸散量）影响最大，解释了 60%的土壤盐分方差，水盐度解释了 26%的方差，然后是灌溉解释了 4%的方差。根据预测值与实测值之间第一次比较的接近程度，SALTIRSOIL 似乎不受任何系统误差的影响，因此，至少对于地表灌溉，不需要增加新参数或校准已经包含的其他参数。SALTIRSOIL 的验证仍在其他水质和灌溉管理情景下进行。
