| 干旱区典型盐碱土反射光谱特征分析 |
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| 引用本文： | 蒲智,孟晓燕,陈艳红,吴艳.干旱区典型盐碱土反射光谱特征分析[J].安徽农业科学,2013(26):10867-10869. |
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| 作者姓名： | 蒲智 孟晓燕 陈艳红 吴艳 |
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| 作者单位： | 中国气象局乌鲁木齐沙漠气象研究所;新疆农业大学计算机与信息工程学院; |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项项目(IDM201106);新疆农业大学校前期资助项目(XJAU201114) |
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| 摘 要： | 地物光谱特征是遥感机理的重要内容,也是遥感应用研究的重要依据.盐碱土的反射光谱特性反映了盐碱土的理化特征.以干旱区3种典型的盐碱土为研究对象,测量了不同含盐量和含水率的土壤反射率光谱,并分析了其光谱特征.结果表明,3种盐碱土的光谱反射率在干燥状态下有明显的高低规律.经过去包络线处理后,3种盐碱土在干燥状态下具有明显不同的光谱特征,且在干湿两种状态下,两个水分吸收谷处的吸收深度的深浅均具有明显的深浅差异.根据这些特征可以将3种类型的盐碱土区分出来.研究结果可为今后进一步研究盐碱化土壤参数反演和分类,以及盐碱土监测等遥感应用服务.
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| 关 键 词： | 盐碱土 光谱特征 去包络线 高光谱 |
Reflectance Spectral Characteristic Analysis of Typical Saline Soil in Arid Area |
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| Institution: | PU Zhi(Urumqi Institute of Desert Meteorology, China Meteorological Administration, Urumqi, Xinjiang 830011) |
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| Abstract: | The spectral feature of ground objects is not only the important content of remote sensing mechanism,but also the important basis in remote sensing application.The spectral property of salinized soil reflects the physics chemistry properties of saline soil.The reflectance of three kinds of typical saline soils in arid area with different soil salt content and soil moisture were measured,and the spectral characteristics were analyzed.The results showed that the reflectance of three kinds of saline soils show obvious high-low rules under dry condition while show no rules under damp condition.With continuum removed,the three kinds of saline soils show obvious difference in reflectance spectral characteristic.The absorption depth of the two absorption value show obvious difference under dry and damp conditions.This can be used to identify these 3 saline soils.The result of this research can be used for the study of saline soil retrieval and classification,and serve for the remote sensing monitoring of saline soil. |
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| Keywords: | Saline soil Spectral characteristic Continuum removal Hyper spectral |
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