摘要
水稻田水中氨氮的损失是农业点面源污染的主要贡献者,研究水稻田面水中氨氮的迁移转化规律十分重要。以秦家试验区为研究对象,利用随机动力学模型对实验数据进行分析模拟,得到田面水中氨氮浓度变化的随机过程,以概率的方式探讨田面水中氨氮总的变化规律。结果表明,考虑随机参数的动力学模型用于模拟水稻田面水中氨氮的变化规律简单易行,结果可靠,可为农田面源污染控制,改善农田生态环境等提供科学依据。
The loss of ammonia nitrogen in paddy field is the main contributor to agricultural point source pollution. It is important to study the regular of migration and transformation of ammonia ni- trogen in paddy field. The experimental data from Qinjia test area was simulated by stochastic dy- namics model. The stochastic process of ammonia nitrogen concentration changed in the surface wa- ter was obtained. The total variation of ammonia nitrogen in the surface water was discussed with the way of probability. The results show that the change of ammonia nitrogen concentration by the dy- namic model of random parameter is simple and easy. The result of stochastic dynamics model is re- liable. It can provide scientific basis for pollution control of farmland surface source and improve- ment of farmland ecological environment.
作者
王泽华
张一丁
孙颖娜
WANG Ze - hua;ZHANG Yi - ding;SUN Ying - na(The Management Office of the Irrigation District of Harbin, Harbin 150020, China;Heilongjiang University, Water Conservancy and Electric Power College, Harbin 150086, China)
出处
《水利科技与经济》
2018年第4期47-49,69,共4页
Water Conservancy Science and Technology and Economy
关键词
水稻田
氨氮变化规律
随机动力学模型
paddy field
variable regular of ammonia nitrogen
the dynamic model of random pa-rameter
