基于GIS黄淮海平原典型区域土壤盐渍化等级判别分析  

The Discriminant Analysis of Soil Salinization Levels in the Typical Area of The HuangHuaiHai Plain Based on GIS

作　　者：李晓明[1] 杨劲松[1] 吴亚坤[2] 李冬顺[1] 

机构地区：[1]中国科学院南京土壤研究所,江苏南京210008 [2]安徽工业大学,安徽马鞍山243002

出　　处：《土壤通报》2011年第2期356-359,共4页Chinese Journal of Soil Science

基　　金：国家科技支撑计划项目课题(2006BAD05B04);中国科学院知识创新工程重要方向性项目(KZCX2-YW-406-3);中国科学院知识创新工程重大项目(KSCX1-YW-09);国家自然科学基金项目(40771097);国家"863"计划重点大项目课题(2006AA10A301;2006AA100207)资助

摘　　要：研究目的在于对以河南封丘为例的黄淮海平原典型区域土壤盐渍化等级进行判别分析;运用判别分析方法获取不同盐渍化等级的判别表达式,利用GIS技术对判别表达式中相关变量指标进行空间分析,最后综合二者结果进行判别分析;通过对部分样品指标测定,参照前人标准评定等级,进而得出其障碍等级的判别式,可以有效减少盐碱障碍等级判别的指标测定数目,然后利用GIS技术对判别指标进行空间分析。研究表明,封丘境内约有12%区域存在轻度盐渍化;结合GIS技术可以有效提高判别效率,提供及时的土壤信息,对于指导农业生产具有重要意义。The paper is to study the discriminant analysis of soil salinization levels by a case study of the typical area of the HuangHuaiHai Plain.Discriminant analysis was used for the equations of different soil salinization levels,and GIS technology was introduced for the spatial analysis of variables related to the soil salinizaion,then the discriminant analysis of the study area was made.The number of variables which are related to the soil salinizaion levels could be reduced,which is shown in the equations of different saline-alkaline compromise levels,by discriminant analysis after the variables of some samples were measured and the samples were distinguished.So the equations of different soil salinizaion levels could be simplified.GIS technology was introduced for the spatial analysis of the related variables.The result showed that the slight salinizaion existed in about 12% of the study area,the efficiency of discriminant analysis of soil salinizaion levels could be improved,and timely soil information could be supplied,which was significant for the agriculture production.

关 键 词：GIS 土壤盐渍化 等级 判别分析 

分 类 号：S156.4[农业科学—土壤学]