一项关于农村地区稻田农药径流至河流的研究——2：数学模型的开发与应用

A study on pesticide runoff from paddy fields to a river in rural region--2: development and application of a mathematical model.

作者信息

Nakano Yoshio, Yoshida Tomohiko, Inoue Takanobu

机构信息

Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8502, Japan.

出版信息

Water Res. 2004 Jul;38(13):3023-30. doi: 10.1016/j.watres.2004.02.014.

DOI:10.1016/j.watres.2004.02.014

PMID:15261540

Abstract

A mathematical model was developed to predict the runoff of pesticides from paddy fields to a river in a rural region. The model comprises three submodels: (1) submodel for river flow, (2) submodel for pesticide behavior in paddy fields, (3) submodel for pesticide behavior in a river. The tank model was applied to predict the river flow and the paddy water. In order to reproduce the actual behavior of pesticides in paddy fields, the kinetics of the transport and reaction mechanisms of pesticides applied to paddy fields were considered in the model. The model was applied to the Kozakura River Basin where the detailed field survey was conducted. The model reflected well the runoff characteristics of pesticides obtained from the detailed field survey.

摘要

开发了一个数学模型来预测农村地区稻田中农药向河流的径流。该模型由三个子模型组成：（1）河流水流子模型，（2）稻田中农药行为子模型，（3）河流中农药行为子模型。采用水箱模型来预测河流水流和稻田水。为了再现农药在稻田中的实际行为，模型中考虑了施用于稻田的农药的迁移和反应机制的动力学。该模型应用于进行了详细实地调查的小仓山河流域。该模型很好地反映了从详细实地调查中获得的农药径流特征。