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

Arid

DOI	10.3724/SP.J.1226.2016.00507
	Quantitative retrieval of soil salt content based on measured spectral data
	Duan, HanChen; Wang, Tao; Xue, Xian; Huang, CuiHua; Yan, ChangZhen
通讯作者	Xue, X
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	ESCI
WOS记录号	WOS:000391635200007
WOS关键词	DELTA OASIS ; SALINITY ; XINJIANG ; OBJECTS ; WEIGAN
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331745
作者单位	[Duan, HanChen; Wang, Tao; Xue, Xian; Huang, CuiHua; Yan, ChangZhen] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Duan, HanChen,Wang, Tao,Xue, Xian,et al. Quantitative retrieval of soil salt content based on measured spectral data[J],2016,8(6):507-515.
APA	Duan, HanChen,Wang, Tao,Xue, Xian,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.