土地利用关系法在非点源污染负荷预测中的应用

Application of Land Use Relation Approach for Nonpoint Source Pollution Load Prediction

估算有限资料条件下的非点源污染负荷,对中国流域非点源污染研究具有重要意义。依据土地利用和实测污染物负荷资料,通过相关分析、实际应用分析,提出了土地利用关系法,分析了土地利用关系法的基本原理和方法。结合在陕西黑河水库的应用实例,研究了在现状基础上的恶化和改善这两种极端情况下的全磷(Total Phosphorus,TP)、全氮(Total Nitrogen,TN)和固体悬浮物(Suspended Solids,SS)污染负荷量。通过与其他非点源污染负荷估算结果的对比,结果表明这种方法具有结构简单、应用方便的特点,适宜资料短缺条件下预测土地利用变化后的非点源污染负荷。

There was great significance to estimate the non-point source（NPS） pollution load with insufficient monitoring data of watershed non-point source pollution in China.Land use types have great influences on nonpoint source pollution load in watershed.Based on land use and pollutant load of the measured data,through the correlation analysis and the practical application,the Land Use Relation Approach was put forward.The fundamentals and principles were introduced in this paper firstly.According to the case study of Heihe watershed,the TP,TP and SS load were predicted under two extreme cases of the deterioration and improve compared with the status.It was showed that the Land Use Relation Approach,with simple structure and program,was feasible and practical to predict NPS pollution load of changed land use.