绿洲农田典型盐碱斑光谱特征与盐分反演建模  

Spectral Characteristics of Typical Saline-alkali Patch and Inversion Modeling Soil Salinity in Oasis Farmland

作　　者：谢奋慧 谷海斌[1] 盛建东[1] 王靓[1] 于洋[1] 蔡云飞[1] 

机构地区：[1]新疆农业大学草业与环境科学学院,新疆乌鲁木齐830052

出　　处：《地理空间信息》2015年第2期153-155,14-15,共3页Geospatial Information

基　　金：国家自然科学基金资助项目(41261057)

摘　　要：通过野外测定盐碱斑光谱反射率,对光谱数据进行去包络线处理,并分析盐碱斑光谱特征。结合盐碱斑表层土壤电导率,进行盐碱斑电导率和反射光谱相关性分析。结果表明,绿洲农田盐碱斑光谱反射曲线650~700 nm波段为盐碱斑电导率最敏感波段,可通过该波段数据与盐碱斑的电导率建立盐碱斑电导率光谱预测模型。The spectral reflectance spectra of saline-alkali patch were measured in field,and then were analyzed using a continuum-removed approach.Meanwhile,combined with the conductivity of the salinealkali patch,correlation between the conductivity and reflectance spectra for saline-alkali patch was analyzed in this article.The results show that 650~700 nm are the most sensitive bands for sensing the typical saline-alkali patch,and a linear model,y=61.113x_(691)+0.457(determination coefficient R^2 is 0.853),existed between the soil conductivity of saline-alkali patch and the band data.

关 键 词：绿洲 盐碱斑 光谱特征 电导率 模型 

分 类 号：P237.9[天文地球—摄影测量与遥感]