黑垆土与栗钙土光谱特征研究  

Spectral Characteristics of Calcic Kastanozem and Chestnut Soil

作　　者：孙宁[1] 常庆瑞[1] 刘梦云[1] 杨琨[1] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨陵712100

出　　处：《西北林学院学报》2011年第1期56-60,共5页Journal of Northwest Forestry University

基　　金：国家自然科学基金黄土高原植被恢复对土壤有机碳影响机理及其储量估算研究(30872073);"十一五"国家科技支撑计划项目(2006BAD03A0308)

摘　　要：针对西北地区典型土壤类型黑垆土和栗钙土光谱特征的分析,利用ASD手扶式光谱辐射仪对21个不同环境条件下形成的土壤样本剖面的各个土层进行光谱测量,得到各土层的反射光谱曲线,并结合各层的有机质含量、氧化铁含量进行相关性分析与回归分析。发现在可见光和近红外波段,有机质对土壤反射率影响最大,呈负相关。氧化铁在900 nm左右处与反射率负相关性最强。黑垆土和栗钙土的有机质和氧化铁含量差异较大,导致其光谱特征差异明显,但在特征波段具有一致趋势。Spectral characteristics of calcic kastanozem soil and chestnut soil occurring in North-west China were analyzed. Twenty-one kinds of soil samples were collected, including variations in different condi- tions. The reflectivity spectrum curve of each soil layer was measured by the ASD Hand Hold Spectroradi- ometer. The correlation analysis was conduoted based on the organic matter content and ferric oxide con- tent in each soil layer. The organic matter content had a great negative influence on soil reflectance in the visible and near-infrared waveband. Ferric oxide had a negative correlation with soil reflectance around 900nm. Because of great differences in organic matter content and ferric oxide content of calcic kastanozem soil and chestnut soil, the characteristics of two kinds of soil was obviously different, bowever, with the same trend in the special wavebands.

关 键 词：土壤反射率 有机质 氧化铁含量 黑垆土 栗钙土 

分 类 号：S151.9[农业科学—土壤学]