摘要
根据化学热力学过程以及土壤剖面碳酸钙淀积过程的机理，借鉴前人的建模经验，构建了干旱地区土壤碳酸钙淋溶淀积过程模型CAEDP，并以晋西北黄土丘陵土壤为例进行了验证。结果表明，本模型仅需输入较少的数据和参数（如月平均气温、作物生育期、土壤水通量等），即可模拟干旱地区土壤剖面碳酸钙的淋溶往积过程以及土壤溶液的pH值，可应用于定量估计气候、生物、地形、母质和时间等状态因子以及人类活动对土壤碳酸钙淀积这一缓慢过程的影响，并可应用于全球变化和土壤变化的定量化研究。
A model for CaCO3 eluviation and deposition processes in arid area soils, called CAEDP, was developed based on mechanisms of chemical thermodynamic process and CaCO3 deposition process in soil profile, and using other experiences in modeling for reference. The model was validated in the north west Shanxi Province, a typicalsemiarid area. The resultS showed that the model simulated the processes of CaCO3 eluviation and deposition and the PH value in arid area soils realishcally, using only a few readily avaible inputs, such as mean monthly temperature, crop growth season, soil water flux, and so on. The model can be used for quantitatively evaluating the effects of factors including climate, biota, topography, parent material, time and human activity on CaCO3 deposition in soil profile, a relatively slow process in soil development. And the model can also be used for quantitative studies on soil change and global change.
出处
《土壤学报》
CAS
CSCD
北大核心
1999年第3期318-326,共9页
Acta Pedologica Sinica
基金
国家教委跨世纪人才基金
山西省科委自然科学基金
关键词
碳酸钙
淋溶淀积
土壤发育过程
模拟
土壤
CaCO_3 eluviation and deposition,Soil development process,Simulation and modeling
