干旱区生态环境知识资源中心(Arid): Quantitative retrieval of soil salt content based on measured spectral data

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	Quantitative retrieval of soil salt content based on measured spectral data
	Duan Hanchen; Wang Tao; Xian Xue; Huang Cuihua; Yan Changzhen
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2016
卷号	8 期号:6 页码:507-515
英文摘要	Choosing the Minqin Oasis, located downstream of the Shiyang River in Northwest China, as the study area, we used field-measured hyperspectral data and laboratory-measured soil salt content data to analyze the characteristics of saline soil spectral reflectance and its transformation in the area, and elucidated the relations between the soil spectral reflectance, reflectance transformation, and soil salt content. In addition, we screened sensitive wavebands. Then, a multiple linear regression model was established to predict the soil salt content based on the measured spectral data, and the accuracy of the model was verified using field-measured salinity data. The results showed that the overall shapes of the spectral curves of soils with different degrees of salinity were consistent, and the reflectance in visible and near-infrared bands for salinized soil was higher than that for non-salinized soil. After differential transformation, the correlation coefficient between the spectral reflectance and soil salt content was obviously improved. The first-order differential transformation model based on the logarithm of the reciprocal of saline soil spectral reflectance produced the highest accuracy and stability in the bands at 462 and 636 nm; the determination coefficient was 0.603, and the root mean square error was 5.407. Thus, the proposed model provides a good reference for the quantitative extraction and monitoring of regional soil salinization.
英文关键词	spectral reflectance soil salt content salinization multiple linear regression Minqin Oasis
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5886548
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335739
作者单位	Duan Hanchen, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Wang Tao, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Xian Xue, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Huang Cuihua, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Yan Changzhen, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Duan Hanchen,Wang Tao,Xian Xue,et al. Quantitative retrieval of soil salt content based on measured spectral data[J],2016,8(6):507-515.
APA	Duan Hanchen,Wang Tao,Xian Xue,Huang Cuihua,&Yan Changzhen.(2016).Quantitative retrieval of soil salt content based on measured spectral data.Sciences in Cold and Arid Regions,8(6),507-515.
MLA	Duan Hanchen,et al."Quantitative retrieval of soil salt content based on measured spectral data".Sciences in Cold and Arid Regions 8.6(2016):507-515.