摘要
内梅罗指数评价法是GB/T14848-93推荐的水质评价方法,其评价结果具有局限性,根本原因是污染指标评分值取值不合理。引进分段线性插值法,实现了改进内梅罗指数评价法,该算法合理计算污染指标在不同区间内的评分值,客观反映了各污染指标对水质污染的贡献度;修正了各单项指标取值偏小的缺陷,解决了单项指标取值不连续问题;实现水质评价结果的连续取值,提高水质评价分类表利用率;修正了水质评价结果偏小的问题,使结果更趋合理。应用改进内梅罗指数评价法评价东方红湿地水质情况,有效验证了评价结果的科学性,真实反映了湿地的水体质量。
The Nemerow index evaluation method is water quality evaluation method recommended in GB/T14848-93,but the calculation results have the limitation. This comes from that the evaluating value of a pollution factor is not reasonable. Nemerow index evaluation method is improved by introducing the piecewise linear interpolation method. The conclusions are as follows： this algorithm evaluates the evaluating value of a pollution factor in different intervals and reflects the contribution of a pollution factor to water pollution; the disadvantages of minor defects of a pollution factor are fixed,and the values discontinuity problems of a pollution factor are solved; the improved evaluation method realizes the even continual distribution of water quality evaluation results,effectively enhances the utilization ratio of water quality classification table; correcting the problem of water quality evaluation results,so water quality evaluation results are more reasonable. The improved Nemerow index evaluation method is applied to evaluate the water quality of Dongfanghong wetland,effectively verifying the scientificity of the evaluation results and reflecting the wetland water quality in a more real manner.
作者
罗嗣卿
贾子书
LUO Siqing;JIA Zishu(School of Information and Computer Engineering, Northeast Forestry University, Harbin 150040, China)
出处
《黑龙江大学自然科学学报》
CAS
2018年第1期15-21,共7页
Journal of Natural Science of Heilongjiang University
基金
国家自然科学基金资助项目(71473034)
关键词
水质评价
内梅罗指数评价法
分段线性插值
东方红湿地
water quality evaluation
Nemerow index evaluation method
piecewise linear interpolation method
Dongfanghong wetland
