植物生长与营养物转化耦合模型研究  

Research on coupling model of plant growth and nutrient migration-transformation

作　　者：杨寅群[1,2] 李志军[2] 张万顺[1] 王永桂[1] 

机构地区：[1]武汉大学资源与环境科学学院,湖北武汉430079 [2]长江水利委员会长江水资源保护科学研究所,湖北武汉430051

出　　处：《人民长江》2012年第21期94-98,共5页Yangtze River

基　　金：国家水体污染控制与治理科技重大专项项目(2008ZX07526-004)

摘　　要：植物生长对流域营养物质迁移转化有重要影响。在分析营养物与水循环机制以及生物生长过程与环境变化过程互动耦合的基础上,根据植物生长动力学模型和土壤氮、磷、碳等营养物转化模型理论,建立了植物生长与土壤营养物质迁移转化耦合模型。利用所建立的模型,模拟了太湖滆湖水系内生物量和营养物(污染物)迁移转化的动态变化过程,并与实测结果进行了比较。结果表明,模型具有较高精度,可为流域面源污染物负荷的预测提供参考。Plant growth has an important influence on migration and transformation of nutrients in soil and water.With consideration on water and nutrients circulation in water-soil system and coupling interaction of plant growth process and environmental variation process,and on the basis of plant growth model and the nutrient migration-transformation dynamic model,a coupled plant-growth and nutrients circulation model is developed.The dynamic temporal and spatial transformation of the biomass and soil-water nutrients content in a typical region of Taihu Lake Basin is analyzed based on the model and the analysis result is compared with the measured one.The analysis result shows that the simulation accuracy is high and the model could be used as an effective tool for the non-point pollution predication and simulation.

关 键 词：植物生长模型 土壤溶质运移 水土系统 水环境 太湖 

分 类 号：X171[环境科学与工程—环境科学]