干旱区生态环境知识资源中心(Arid): Ensemble Band Selection for Quantification of Soil Total Nitrogen Levels from Hyperspectral Imagery

Arid

DOI	10.3390/rs16142549
	Ensemble Band Selection for Quantification of Soil Total Nitrogen Levels from Hyperspectral Imagery
	Misbah, Khalil; Laamrani, Ahmed; Voroney, Paul; Khechba, Keltoum; Casa, Raffaele; Chehbouni, Abdelghani
通讯作者	Misbah, K
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2024
卷号	16 期号:14
英文摘要	Total nitrogen (TN) is a critical nutrient for plant growth, and its monitoring in agricultural soil is vital for farm managers. Traditional methods of estimating soil TN levels involve laborious and costly chemical analyses, especially when applied to large areas with multiple sampling points. Remote sensing offers a promising alternative for identifying, tracking, and mapping soil TN levels at various scales, including the field, landscape, and regional levels. Spaceborne hyperspectral sensing has shown effectiveness in reflecting soil TN levels. This study evaluates the efficiency of spectral reflectance at visible near-infrared (VNIR) and shortwave near-infrared (SWIR) regions to identify the most informative hyperspectral bands responding to the TN content in agricultural soil. In this context, we used PRISMA (PRecursore IperSpettrale della Missione Applicativa) hyperspectral imagery with ensemble learning modeling to identify N-specific absorption features. This ensemble consisted of three multivariate regression techniques, partial least square (PLSR), support vector regression (SVR), and Gaussian process regression (GPR) learners. The soil TN data (n = 803) were analyzed against a hyperspectral PRISMA imagery to perform spectral band selection. The 803 sampled data points were derived from open-access soil property and nutrient maps for Africa at a 30 m resolution over a bare agricultural field in southern Morocco. The ensemble learning strategy identified several bands in the SWIR in the regions of 900-1300 nm and 1900-2200 nm. The models achieved coefficient-of-determination values ranging from 0.63 to 0.73 and root-mean-square error values of 0.14 g/kg for PLSR, 0.11 g/kg for SVR, and 0.12 g/kg for GPR, which had been boosted to an R2 of 0.84, an RMSE of 0.08 g/kg, and an RPD of 2.53 by the ensemble, demonstrating the model's accuracy in predicting the soil TN content. These results underscore the potential for using spaceborne hyperspectral imagery for soil TN estimation, enabling the development of decision-support tools for variable-rate fertilization and advancing our understanding of soil spectral responses for improved soil management.
英文关键词	agriculture soil nutrients hyperspectral remote sensing semi-arid regions croplands
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001277381400001
WOS关键词	INFRARED REFLECTANCE SPECTROSCOPY ; ORGANIC-MATTER ; REGRESSION ; SUPPORT ; CROPS ; MACRONUTRIENTS ; CLASSIFICATION ; PREDICTION ; MACHINE ; INDEXES
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405313
推荐引用方式 GB/T 7714	Misbah, Khalil,Laamrani, Ahmed,Voroney, Paul,et al. Ensemble Band Selection for Quantification of Soil Total Nitrogen Levels from Hyperspectral Imagery[J],2024,16(14).
APA	Misbah, Khalil,Laamrani, Ahmed,Voroney, Paul,Khechba, Keltoum,Casa, Raffaele,&Chehbouni, Abdelghani.(2024).Ensemble Band Selection for Quantification of Soil Total Nitrogen Levels from Hyperspectral Imagery.REMOTE SENSING,16(14).
MLA	Misbah, Khalil,et al."Ensemble Band Selection for Quantification of Soil Total Nitrogen Levels from Hyperspectral Imagery".REMOTE SENSING 16.14(2024).