基于污染物消减成本的核心流域生态补偿定量动态计算方法研究

Quantitative Dynamic Calculation Method of Ecological Compensation in Core River Basin Based on Pollutant Reduction Cost

核心流域城市聚集、经济较发达,由于所用资源较大,所以周边生态资源破坏较严重。由于传统核心流域生态补偿定量动态计算方法受到自然环境的影响比较大,导致核心流域生态补偿定量计算的精度较差,为此提出了基于污染物消减成本的核心流域生态补偿定量动态计算方法。描述了核心流域图像中任何一个像素点的灰度参数,采用滤波函数对特征提取矩阵进行平滑处理,通过判断生态补偿特征的质量,提取出核心流域生态补偿特征。设置了核心流域生态补偿特征分类的灰度阈值,给出各项参数的使用条件,计算了最优的生态补偿特征在分类时的平面分量。采用污染物消减成本计算法,评价了核心流域内环境污染造成的损失和植被破坏造成的损失,结合生态系统的水源涵养量计算,对核心流域生态补偿进行了定量动态计算。试验结果表明,该方法在提高生态补偿定量动态计算准确率的同时,缩短了计算时间,说明该方法的计算性能优越,可以提供更准确的生态补充建议,为核心区域生态补偿分析提供基础依据。

In a core basin,the city agglomeration and developed economy often lead to huge resource consumption,which seriously damages the surrounding ecological resources.As the traditional quantitative dynamic calculation method of ecological compensation is greatly affected by the natural environment in the core basin,the accuracy of the quantitative calculation is poor.Therefore,a quantitative dynamic calculation method of ecological compensation for a core basin based on the reduction cost of pollutants is proposed.In this paper,the gray parameters of any pixel in a core basin image are described,and the feature extraction matrix is smoothed by the filtering function.By judging the quality of ecological compensation characteristics,the ecological compensation features in the core basin are extracted.Moreover,the gray threshold for the classification of ecological compensation features and the use conditions of parameters are given,and the plane component of the optimal ecological compensation feature is calculated.Then,the calculation method of pollutant reduction costs is applied to evaluate the loss caused by environmental pollution and vegetation damage in the core basin,and with the calculation of water conservation in the ecosystem,the ecological compensation of the core basin is calculated quantitatively and dynamically.The experimental results reveal that the method improves the accuracy of quantitative dynamic calculation of ecological compensation and shortens the calculation time.This indicates that the calculation performance of this method is superior,and it can provide accurate ecological supplementary suggestions and a basis for the ecological compensation analysis in the core area.