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遥感技术与应用  2011, Vol. 26 Issue (3): 355-359    DOI: 10.11873/j.issn.1004-0323.2011.3.355
模型与反演     
沙质土壤含水率高光谱预测模型建立及分析
尹业彪,李霞,赵钊,董道瑞
(新疆农业大学草业与环境学院,新疆 乌鲁木齐830052)
Predict Model and Analysis of the Sandy Soil Moisture with Hyperspectral
YIN Ye-biao,LI Xia,ZHAO Zhao, DONG Dao-rui
(Xin Jiang Agriculture University College of Pratalultural and Environmental Science,Urumqi 830052,China)
 全文: PDF(1206 KB)  
摘要:

利用HR768型光谱仪,实地测定了古尔班通古特沙漠南缘60个样点的土壤光谱和土壤含水率。对测定的光谱数据选择土壤水分较敏感的红外波段与土壤含水率进行线性回归,结果表明:实测土壤光谱经对数变换后土壤光谱与其含水率拟合效果不理想,用去包络线且一阶微分方法对实测土壤光谱数据进行处理后,再与相应土壤含水率进行回归,其回归效果较好,决定系数R2达0.855该方法具有实用性强、易操作的特点,为沙漠区土壤含水率的反演提供新的方法和思路。

关键词: 包络线去除沙质土壤土壤含水率高光谱噪音    
Abstract:

The objective of this paper is to reveal the relationship between the soil moisture content and Hyperspectral. The paper tested 60 sandy soil samples in the south of Gurban tunggut desert with SVC field\|portable spectroradiometer and established the liner regression between sandy moisture content and infrared bands which are sensitive to soil moisture content.The results showed that field test spectral of the sandy soil and logarithmic transformed refletance of the sandy soil did not show fine regression with the soil moisture content; the refletance which was continuum-removed and then first derivative regressed well with the soil moisture,the coefficient of determination (R2) was 0.855.This method provides a new idea to retrieve sandy soil moisture which is practicable and operated easily.

Key words: Continuum-removed    Sandy soil    Soil moisture    Hyper\    spectral    Noise
收稿日期: 2010-10-15 出版日期: 2013-01-23
:  TP 79  
基金资助:

国家自然科学基金 (40961027)、新疆草地资源与生态重点实验室、水利部公益性行业科研项目(200801050)资助。

通讯作者: 李霞(1956-),女,山东宁津人,教授,主要从事资源生态及环境遥感研究。Email: xjlx782@126.com。     E-mail: mobilebox@126.com
作者简介: 尹业彪(1985-),男,河南商丘人,硕士研究生,主要从事资源生态遥感研究。Email:mobilebox@126.com。
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引用本文:

尹业彪,李霞,赵钊,董道瑞. 沙质土壤含水率高光谱预测模型建立及分析[J]. 遥感技术与应用, 2011, 26(3): 355-359.

YIN Ye-biao,LI Xia,ZHAO Zhao, DONG Dao-rui. Predict Model and Analysis of the Sandy Soil Moisture with Hyperspectral. Remote Sensing Technology and Application, 2011, 26(3): 355-359.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2011.3.355        http://www.rsta.ac.cn/CN/Y2011/V26/I3/355

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