含两种土壤容量因子等温吸附模型一中国河套灌区土壤水环境溶质迁移动态模拟公报

A Homothermous Soil Absorption Modd with Two Capacity Factors──A Study Bulletin on the Dynamic Systematic Simulation of Solute Transport in Soil-Water Enviroment System in Hetao Irrigation Area China(1)

本文以热力学平衡实验为基础，结合溶质动力学实验，对中国河套灌区的４种供试土样，进行较系统的静态等温吸附实验，用静态均衡动力吸附实验和一维土柱动态吸附实验检验了离子吸附或解析量的变化；在分析比较国内外４种代表性吸附模型的基础上，提出了含有两种容量因子即土壤初始吸附量Ｓ＿８和最大吸附量Ｓ＿（ｍａｘ）的等温吸附模型（ＴＣＦＭ）：．具有明确的物理意义与严格的应用条件，有较高的数值模拟精度，可供土壤吸附研究参考。

Aimed at three kinds of soil samples in Hetao irrigation area,China,the homothermous soil absorption experiments are done systematically which are on the basis of the thermodynamics equilihruni experiment and the solute dynamics experiment。The variation of ion absorption experiment and one-dimensional dynamic absorptionexperiment.By analysis and comparison of the four kinds of absorption models,a ho-mothermous soil abosrption model with two capacity factors(TCFM)which are the ini-tial absorption S。and the maximum abaorption S_(max)are given as follows:The TCFM has the clear physics meaning and more strict application condition,As ithas the higher precision in numerical simulation。TCFM can be a reference for soil ab-sorption study.