尾矿库土壤铵态氮空间分异性及其可视化表达  

Spatial differentiation of ammonium nitrogen in soil of tailings pond and its visual expression

作　　者：冯郑文 刘亚静 FENG Zhengwen;LIU Yajing(College of Mining Engineering,North China University of Science and Technology,Tangshan 063210,China;Tangshan Key Laboratory of Remote Sensing of Resources and Environment,Tangshan 063210,China;Hebei Mining Area Ecological Restoration Industry Technology Research Institute,Tangshan 063210,China;Hebei Key Laboratory of Mining Development and Safety Technology,Tangshan 063210,China)

机构地区：[1]华北理工大学矿业工程学院,河北唐山063210 [2]唐山市资源与环境遥感重点实验室,河北唐山063210 [3]河北省矿区生态修复产业技术研究院,河北唐山063210 [4]河北省矿业开发与安全技术重点实验室,河北唐山063210

出　　处：《中国矿业》2024年第7期118-126,共9页China Mining Magazine

基　　金：国家自然科学基金青年科学基金项目资助(编号:42101393)。

摘　　要：为解决尾矿库土壤铵态氮含量信息描述和表达手段单一,引起空间分异性精细化表述不明确的问题,以迁安市某尾矿库为研究区,采集化验0~20 cm、20~40 cm、40~60 cm三层土壤铵态氮含量,利用莫兰指数分析土壤铵态氮空间自相关性和空间聚集程度;利用标准差椭圆分析研究区内土壤铵态氮含量的二维空间变化趋势;基于二维空间中土壤铵态氮分异性研究,探讨3D经验贝叶斯克里金对土壤铵态氮三维空间分布特征的模拟,通过构建剖切面和等值面,深入研究尾矿库土壤铵态氮在水平方向及垂直方向的二维三维可视化表达效果。研究结果表明:尾矿库土壤铵态氮含量在不同土壤深度均存在显著的空间正向关联性和空间集聚性;随着土壤深度增加,铵态氮含量西南-东北变化的方向性越明显;二维三维插值显示研究区土壤铵态氮含量在水平方向、垂直方向上空间分布均有显著差异性,等值面的构建有效描述了尾矿库土壤铵态氮具体含量值的三维空间精细化分布规律。通过本文研究以期为矿区土壤理化性质三维空间分布规律研究、土壤修复,以及生态可持续发展提供理论支撑及参考。In order to solve the problem that the description and expression means of content of ammonium nitrogen in soil of tailings pond are single,which leads to the unclear expression of spatial differentiation.Taking a tailing pond in Qian’an City as the research area,the content of ammonium nitrogen in soil at three layers of 0-20 cm,20-40 cm and 40-60 cm is collected and analyzed.The spatial auto correlation and spatial aggregation degree of ammonium nitrogen in soil are analyzed by Moran’s I,and the spatial distribution characteristics are described.The variation trend of content of ammonium nitrogen in soil in two dimensions is analyzed by Standard Deviation Ellipse.A 3D spatial model of ammonium nitrogen in soil is constructed by using 3D Empirical Bayesian Kriging interpolation,and a 2D visualization of ammonium nitrogen in the vertical direction is performed by model cutting and equivalent body construction.The results show that the content of ammonium nitrogen in soil of tailings pond has significant spatial positive correlation and spatial agglomeration at different soil depths.With the increase of soil depth,the direction of the change of content of ammonium nitrogen in southwest to northeast is more obvious.2D and 3D interpolation show that the spatial distribution of content of ammonium nitrogen in soil in the study area is significantly different in both horizontal and vertical directions,and the construction of equivalent bodies effectively describes the 3D spatial fine distribution law of content of ammonium nitrogen in soil tailings pond.The paper is expected to provide theoretical support and reference for the research of 3D spatial distribution of soil properties,soil remediation and ecological sustainable development.

关 键 词：铵态氮 莫兰指数 标准差椭圆 3D经验贝叶斯克里金 空间分布 

分 类 号：TD88[矿业工程—矿山开采] P285.1[天文地球—地图制图学与地理信息工程]