沙化土地光谱特征初步分析  

The Preliminary Analysis on Spectral Property of Sandy Land

作　　者：王晓慧[1] 李增元[1] 高志海[1] 王琫瑜[1] 白黎娜[1] 车学俭[1] 

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091

出　　处：《遥感信息》2005年第5期32-35,共4页Remote Sensing Information

基　　金："十五"国家科技攻关项目(2002BA517A09)

摘　　要：分析地物光谱特征与土地沙化间的数量关系,找出地物光谱特征变异的规律,从地物光谱的角度为遥感影像中沙化土地提取和定量分析提供依据。沙化土地光谱数据源分为单一地物类型级和复合地物类型级两种,野外测量时分别采取不同的采样方法。沙化土地光谱数据表现出随植被覆盖、植被类型、土壤、地类等的变化规律。By analyzing the quantity relationship between spectral property and sandy land, the variation rules of spectral property of surface features were found, and thus the evidence was provided to the extraction and quantitative analysis of sandy land in respect of spectrum. Spectral data sources of sandy land included single surface feature and composite surface feature, and their spectral data were measured by different sampling methods. Spectral data of sandy land are changed with vegetation coverage, vegetation type, soil and land type.

关 键 词：沙化土地 光谱测量 光谱特征 

分 类 号：P237.9[天文地球—摄影测量与遥感]