盐渍土时空变化信息的图谱可视化分析  

Visual analysis of saline soil spatio-temporal variation using Geo-information TuPu

作　　者：张荣群[1] 宋乃平[2] 王秀妮[1] 蔡思敏[1] 

机构地区：[1]中国农业大学信息与电气工程学院,北京100083 [2]西北土地退化与生态恢复国家重点实验室培育基地(宁夏大学),银川750021

出　　处：《农业工程学报》2012年第9期230-235,F0003,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(批准号:40871103);国家重点基础研究发展计划项目课题(课题编号:2012CB723206)

摘　　要：针对盐渍土动态变化监测中,无法实现变化信息的定位可视化表达问题,该文应用地学信息图谱的分析理念,提出了表达盐渍土类型变化的时空复合单元,探讨了盐渍土时空变化信息的图谱可视化表达方法。以盐渍化比较严重的银川平原为研究区,利用2000、2004和2009年3a的卫星遥感图像,进行了土壤盐渍化遥感制图,在GIS技术支持下,获取了2000-2004年、2004-2009年2个时段的盐渍土时空变化信息图谱,实现了盐渍土时空变化信息的可视化表达。为定位分析盐渍土演化的驱动机制提供了一种新的方法。The visual analysis of saline soil dynamic change information is still not solved. The analysis method of Geo-information TuPu was used for visual analysis of saline soil dynamic change information in the paper. Spatio-temporal composite unit was put forward as the minimum mapping unit to express the dynamic change of saline soil types. The establishing method of Geo-information TuPu of saline soil dynamic change was studied in this paper. Yinchuan Plain was taken as a research area. Three years （2000, 2004 and 2009） satellite remote sensing images were used for soil salinization mapping. The two-period saline soil dynamic change information TuPus were obtained from 2000 to 2004 and from 2004 to 2009 using GIS superposition analysis. Dynamic change pattern were analyzed by Geo-information TuPu of saline soil dynamic change in Yinchuan Plain. The results can provide a new way for position analysis on the drive mechanism of saline soil evolution.

关 键 词：遥感 监测 盐渍土 动态变化 地学信息图谱 可视化 

分 类 号：P237[天文地球—摄影测量与遥感]