基于单元分析的非点源污染调查评估方法

由于传统数学模拟手段的局限性 ,调查评估方法在非点源污染定量研究中日益受到重视。为逐步健全非点源污染调查评估方法体系 ,基于单元分析的思想 ,提出一种新的非点源污染调查评估方法——单元调查法。单元调查法的核心是识别调查单元和确定单元评估系数。以农业非点源为例 ,在对其污染特征进行深入分析的基础上 ,探讨产污单元的识别方法和单元产污强度的确定原则 ,构建农业非点源单元调查法。采用上述方法 ,对中国农业非点源污染的分布情况进行实例研究 ,说明该方法是可行的

Evaluation of non-point source pollution based on unit analysis

Due to the limitations of traditional mathematical modeling, the investigation and evaluation method has played an important role in quantitative studies of non-point source pollution (NSP) in recent years. A new NPS investigation and evaluation method (unit analysis method) was developed with an emphasis on unit identification and coefficient evaluation. Agriculture non-point source pollution was used as an example to illustrate how to identify pollution units and evaluate their pollution coefficients. An agriculture non-point source pollution model has been then developed which accurately describes the distribution of such pollution sources in China.