基于GIS的克里金法对二维水质模型的改进  

Improvement of Two-dimensional Water Quality Model Using Kriging Interpolation Based on GIS Technology

作　　者：杜军凯[1] 李晓星[1] 黄晓荣[1] 敖天其[1] 

机构地区：[1]四川大学水利水电学院,四川成都610065

出　　处：《水电能源科学》2011年第6期36-39,60,共5页Water Resources and Power

基　　金：国家自然科学基金资助项目(50979602)

摘　　要：为研究天然河道水体污染在二维空间上的分布特征并提高二维水质模型的使用效率,以绵远河某排污口为例,选取BOD作为预测因子并采用二维水质模型进行研究。针对传统二维水质模型中出现的问题,基于GIS技术及数据库方法,将克里金法与传统二维水质模型相耦合,充分考虑了空间因素对预测值的影响,提出了二维修正模型,建立了水体污染预测系统。结果表明,与传统二维水质模型相比,二维修正模型更符合连续水体特征,适用性更强,对水环境污染预测具有重要的参考价值。For revealing the distribution of water pollution in two-dimensional space and improving the efficiency of the two-dimensional water quality model, taking the drain outlet in Mianyuan River for an example, biochemical oxygen demand （BOD） is chosen as the forecasting factor. Aiming at the shortcomings of traditional two-dimensional water quality model, based on technology of GIS and database, coupling traditional 2-D water quality model and Kriging method is proposed to improve model and establish forecasting system of water-body pollution by considering the influence of space factor on prediction value. The results suggested that compared with the traditional 2-D water quality model, the modified two-dimensional model is not only more suitable for continuous flow but more efficient to further progress, which can be used as a good reference for the pollution forecasting of water environment.

关 键 词：地理信息系统 克里金模型 二维水质模型 二维修正模型 生物耗氧量 

分 类 号：TV11[水利工程—水文学及水资源] X522[环境科学与工程—环境工程]