农业环境科学学报2016，Vol.35Issue(12)：2405-2412,8.DOI:10.11654/jaes.2016-0796
基于DNDC模型的稻田氮素流失及其影响因素研究
Modeling N loss from paddy fields and sensitivity analysis with DNDC Model
摘要
Abstract
N loss from paddy fields lead to agricultural non-point source pollution. Observed data from lysimeter study was used for valida-tion of DNDC model, and then sensitivity analysis was conducted with DNDC model to evaluate the impact factors that affect N loss from paddy fields. The results indicated that DNDC model accurately simulated rice yields and N loss from paddy fields under different fertiliza-tion methods. Fertilization and precipitation are the major factors that affect N loss from paddy field, and showed positive correlation with N loss. N loss through subsurface leaching negatively correlated with SOC content and soil clay fraction, while positively correlated with soil nitrate content. According to sensitivity analysis, decreasing of fertilization rate, application of water-saving irrigation and organic manure could effectively reduce N loss from paddy fields.关键词
稻田/氮素流失/DNDC模型/敏感性分析/径流/渗漏Key words
paddy fields/N loss/DNDC model/sensitivity analysis/runoff/leaching分类
农业科技引用本文复制引用
赵峥,吴淑杭,周德平,褚长彬,曹林奎..基于DNDC模型的稻田氮素流失及其影响因素研究[J].农业环境科学学报,2016,35(12):2405-2412,8.基金项目
国家星火计划重点项目（2015GA680004）；国家自然科学基金重点项目（71333010）；上海市科委科研计划项目 （）
