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几种不同类型土壤的VIS-NIR光谱特性及有机质响应波段研究
引用本文:纪文君,史舟,周清,周炼清.几种不同类型土壤的VIS-NIR光谱特性及有机质响应波段研究[J].红外与毫米波学报,2012,31(3):277-282.
作者姓名:纪文君  史舟  周清  周炼清
作者单位:1. 浙江大学农业遥感与信息技术应用研究所,浙江杭州,310058
2. 湖南农业大学资源环境学院,湖南长沙,410128
基金项目:国家自然科学基金国家自然科学基金(40871100),教育部新世纪优秀人才支持计划(NCET-10-0694)
摘    要:利用高光谱遥感技术估测土壤有机质含量是精准农业发展的必然要求.本研究测量并分析了7组不同地区不同类型共791个土壤样品在350~2500 nm的光谱反射率及一阶微分曲线,并对土壤有机质含量和光谱反射率进行相关性分析,同时对前人研究中有关有机质的光谱响应波段进行了总结.结果发现,600~800 nm波段可以作为研究区域内不同类型土壤共同的有机质光谱响应波段,这对进一步建立不同土壤类型相对统一的有机质预测模型具有一定意义.研究还发现,有机质含量高于2%并不是高光谱预测土壤有机质含量必要的前提条件.

关 键 词:高光谱  土壤有机质  响应波段  相关分析
收稿时间:2010/12/7
修稿时间:2011/5/10 0:00:00

VIS NIR reflectance spectroscopy of the organic matter in several types of soils
JI Wen-Jun,SHI Zhou,ZHOU Qing and ZHOU Lian-Qing.VIS NIR reflectance spectroscopy of the organic matter in several types of soils[J].Journal of Infrared and Millimeter Waves,2012,31(3):277-282.
Authors:JI Wen-Jun  SHI Zhou  ZHOU Qing and ZHOU Lian-Qing
Affiliation:College of Environmental and Resource Sciences of Zhejiang University,College of Environmental and Resource Sciences of Zhejiang University,College of Resources and Environment of Hunan Agricultural University,College of Environmental and Resource Sciences of Zhejiang University
Abstract:Estimating the content of soil organic matter (SOM) using hyperspectral remote sensing is an inevitable requirement for precision agriculture. In this study, averages of spectral reflectance and first derivative of 791 sample pieces were measured in the visible and near infrared (350~2500 nm) bands, which belong to five different soil types from four provinces, including phaeozem in Heilongjiang, alluvial soil in Henan, paddy soil in Sichuan and Zhejiang, purple soil in Sichuan and Zhejiang, and seashore saline soil in Zhejiang. The correlation coefficients between organic matter content and spectral reflectance were calculated, while the characteristic spectral bands mentioned in precedent researches were summarized. The results show that 600~800nm can be used as common characteristic bands of these different types of soils from different regions in the study, which is important for building the universal model for soil organic matter with alternative parameters. Another conclusion is that above 2% in SOM is not necessary for predicting SOM.
Keywords:hyperspectral  soil organic matter  characteristic bands  correlation analysis
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