某石油泄漏场地土壤二甲苯空间分布的三维插值  

Three-dimensional interpolation of dimethylbenzene distribution in soil at a petroleumcontaminated site in China

作　　者：史广[1] 荆耀栋[1] 秦明星[1] 刘庚[2] SHI Guang JING Yao-dong QIN Ming-xing LIU Geng(School of Resources and Environment, Shanxi Agricultural University, Taigu 030801, Shanxi , China Research Center for Scientific Development in Fenhe River Valley, Taiyuan Normal University, Taiyuan 030012, China）.)

机构地区：[1]山西农业大学资源环境学院,山西太谷030801 [2]太原师范学院汾河流域科学发展研究中心,太原030012

出　　处：《生态学杂志》2016年第10期2861-2866,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(41401236);山西省自然科学基金项目(2015021166)资助

摘　　要：为精确界定污染场地中污染物三维空间分布范围,本文以中国某石油储罐泄露污染场地为研究对象,采用最近邻点法、反距离加权法及克里金法3种三维空间插值模型,对场地中特征污染物二甲苯进行三维空间插值计算及污染分布表征,比较不同插值模型的计算精度,揭示场地中实际受污染土方量。结果表明,反距离加权法预测平均误差为4.94,均方根误差为14.11,其精度明显高于另外2种模型,界定的污染分布范围较符合实际污染情况,通过该方法进行插值后计算受污染土方量为666.2 m^3。研究结果对该类型污染场地污染物空间分布表征和修复治理决策制定提供科学依据。A petroleum-contaminated site was selected to determine the contamination boundary and volume of soil contaminated with dimethylbenzene. We compared the efficiency and precision of three 3D interpolation models （Kriging, IDW, and Nearest Neighbor） in determining the site contamination boundary. Employing a cross validation method, we found that the results of the IDW model were more accurate than the other two models in predicting the actual pollution conditions of the contaminated site. The mean error （ME） and root mean square error （ RMSE ） of IDW were 4.94, and 14.11, respectively. With a view towards remediation, the contaminated soil volume calculated by the IDW interpolation model was 666.2 m3. Different prediction models had uncertain influences on determining the contamination boundary. This study provides a contribution towards determining pollutant distribution ted sites. and making decision for remediation of contaminated sites.

关 键 词：污染评价 空间分布 三维插值 二甲苯 

分 类 号：X53[环境科学与工程—环境工程]