不同重构措施复垦土壤水氮运移和作物生长模拟与响应机制

项目名称： 不同重构措施复垦土壤水氮运移和作物生长模拟与响应机制

项目编号： No.41471186

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 地质学

项目作者： 张世文

作者单位： 安徽理工大学

项目金额： 76万元

中文摘要： 清楚认识重构措施、重构土壤水氮运移、作物生长和管理措施相互之间的响应机制对于重构措施的合理选择和复垦土壤的科学管理至关重要，针对当前该领域定量化响应机制研究不够系统全面，机制认识不清等不足之处，在充分分析申请者已有研究和资料积累的基础上，设计本项目。拟采用物理模拟实验与数学模型相结合、理论分析与实际观测相结合的研究方法。研究内容包括：通过多方法优劣比较，提出复垦重构土壤属性高精度空间预测方法；整合土壤动力学模型和平衡模型，建立GIS耦合的复垦土壤水氮运移与作物生长联合模型；基于模型模拟结果，分析复垦土壤水氮运移和作物生长参数空间分布特征和影响因素，定量化揭示重构措施、重构土壤水氮运移、作物生长和管理措施相互之间的响应机制。研究成果将进一步充实土壤溶质运移理论，推动土地复垦基础性研究。

中文关键词： 复垦土壤；水氮运移；作物生长；模型模拟；响应机制

英文摘要： A clear understanding of mutual response mechanism among reclamation measures, water and nitrogen process of reclamation soil , crop growth and management measures is essential for reasonable choice of the rehabilitation measures and vital scientific management of reclamation soil.Contrary to the deficiencies of current research, such as inadequate systematic and comprehensive quantitative research on the current response mechanism in the field, no clear understanding of the mechanism, this project was designed on the basis a full analysis of existing research and data accumulation using combining methods physical simulation and mathematical model, theoretical analysis and practical observations. The study contents include: proposed precision spatial prediction methods of reclaimed soil properties by comparing the merits of multi-methods.Established combined models of water and nitrogen process and crop growth coupled with GIS for reclamation soil. Based on results of model simulation, analysed spatial distribution and influencing factors of parameters of water and nitrogen processes and crop growth, revealing the response mechanism of reclamation measures, water and nitrogen process, crop growth and management measures. The research results will further enrich the soil solute transport theory, and promote basic research of land reclamation.

英文关键词： Reclaimed soil;Water and nitrogen migration;Crop growth;Model simulation;Response mechanism