干旱区生态环境知识资源中心(Arid): Comparative analysis of spectral indexes for soil salinity mapping in irrigated areas in a semi-arid region, Brazil

Arid

DOI	10.1016/j.jaridenv.2022.104888
	Comparative analysis of spectral indexes for soil salinity mapping in irrigated areas in a semi-arid region, Brazil
	Barreto, Artenio Cabral; Neto, Miguel Ferreira; de Oliveira, Ronaldo Pereira; Jario Moreira, Luis Clenio; de Medeiros, Jose Francismar; da Silva Sa, Francisco Vanies
通讯作者	Sá, FVD
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2023
卷号	209
英文摘要	Salinization reduces agricultural yield and sustainable development in the long term. In this study, we identified the spectral index that best estimates soil salinity in the area of the Baixo-Acu irrigated perimeter in northeast Brazil. We also established how vegetation canopy and satellite image spatial resolution influence the results. The electrical conductivity of 42 sampling points was determined and correlated with 20 spectral salinity indexes. The spatial resolution influence on index response was evaluated using OLI/Landsat8 and MSI/Sentinel2 satellite images, with spatial resolutions of 30 and 10 m, respectively. They were applied to bare soil and vegetation canopy areas to assess the vegetation canopy influence on the indexes. Normalized Differential Vegetation Index greater than 0.33 indicated soils with vegetation canopy. In all analyses performed, the bare soil areas had the best results. From the 18 analyzed indexes, Sentinel2 images outperform Landsat8 images. The Soil Index-1 showed an 80.34%-determination coefficient that outperformed the other 19 indexes in soil salinity identification. These results indicate that the association of the Soil Index-1, Sentinel2 images, and the Normalized Differential Vegetation Index less than 0.33 improves the evaluation of the salinized areas.
英文关键词	Soil salinity Remote sensing Normalized differential vegetation index
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000927625800004
WOS关键词	SALT-AFFECTED SOILS ; OASIS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397136
推荐引用方式 GB/T 7714	Barreto, Artenio Cabral,Neto, Miguel Ferreira,de Oliveira, Ronaldo Pereira,et al. Comparative analysis of spectral indexes for soil salinity mapping in irrigated areas in a semi-arid region, Brazil[J],2023,209.
APA	Barreto, Artenio Cabral,Neto, Miguel Ferreira,de Oliveira, Ronaldo Pereira,Jario Moreira, Luis Clenio,de Medeiros, Jose Francismar,&da Silva Sa, Francisco Vanies.(2023).Comparative analysis of spectral indexes for soil salinity mapping in irrigated areas in a semi-arid region, Brazil.JOURNAL OF ARID ENVIRONMENTS,209.
MLA	Barreto, Artenio Cabral,et al."Comparative analysis of spectral indexes for soil salinity mapping in irrigated areas in a semi-arid region, Brazil".JOURNAL OF ARID ENVIRONMENTS 209(2023).