土壤环境监测点位最优网格研究--以南阳盆地农耕区土壤镉元素为例  

Study on optimal grid of soil environmental monitoring sites:taking soil Cd element farming area of Nanyang Basin for example

作　　者：马振波[1,2] 解庆锋 张平[1,2,3] 周小果 张得恩 司法祯[1,2] 李胜昌 Ma Zhenbo;Xie Qingfeng;Zhang Ping;Zhou Xiaoguo;Zhang De′en;Si Fazhen;Li Shengchang(Henan Institute of Geological Survey,Zhengzhou 450001,China;Henan Geochemical Ecological Restoration Engineering Research Center,Zhengzhou 450001,China;Henan Institute of Geological Sciences,Zhengzhou 450001,China)

机构地区：[1]河南省地质调查院,河南郑州450001 [2]河南省地球化学生态修复工程技术研究中心,河南郑州450001 [3]河南省地质科学研究所,河南郑州450001

出　　处：《能源与环保》2021年第5期63-67,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：河南省土壤污染防治专项资金(豫环函〔2019〕208号);中央地质勘查基金(IHEGDD2016065,IHEGDD2018051)。

摘　　要：以河南省南阳盆地农耕区为研究区,利用1∶25万土地质量调查表层土壤数据,选择镉元素为研究对象,利用Moran指数,检测研究区域内土壤镉元素空间自相关的指标;采用随机抽样法,分别形成4 km×4 km、8 km×8 km、16 km×16 km和32 km×32 km等4种尺度的网格,分别通过半方差分析、交叉验证,对不同采样尺度下的土壤镉元素的空间变异进行分析及预测精度;最后以普通克里格插值方法为例,探讨采样点数量对土壤质量指数空间分布表征的影响,研究了土壤环境监测点位的最优布设网格。通过对南阳盆地农耕区土壤数据研究发现,土壤环境监测点位采用16 km×16 km尺度的网格比较适宜。In this paper,the farming area of Nanyang basin in Henan Province was taken as the studying area,based on the surface soil data of 1∶250000 Land Quality Survey,the Cd element was selected as the research object.Using the Moran index,the spatial autocorrelation index of Cd element in the studied area was detected by Moran index,random sampling method was used to form 4 km×4 km,8 km×8 km,16 km×16 km and 32 km×32 km grids.The spatial variability of Cd element in soils with different sampling scales was analyzed and predicted by semi-variance analysis and cross-validation.Finally,the effect of the number of sampling points on the spatial distribution of soil quality index was studied by using Kriger interpolation method.The optimal grid layout of soil Environmental monitoring was studied.Based on the soil data of the farming area in Nanyang Basin,it was found that 16 km×16 km grid is suitable for the environmental monitoring point.

关 键 词：土壤环境 监测点位 最优网格 预测精度 

分 类 号：X833[环境科学与工程—环境工程]