干旱区生态环境知识资源中心(Arid): Detecting desertification in different years and rainfall regimes by 2D Scatter Plot

Arid

DOI	10.5935/1806-6690.20210039
	Detecting desertification in different years and rainfall regimes by 2D Scatter Plot
	dos Santos, Thiago Costa; Teixeira, Adunias dos Santos; Terra, Fabricio da Silva; Jario Moreira, Luis Clenio; Toma, Raul Shiso
通讯作者	dos Santos, TC (corresponding author), Univ Fed Ceara UFC, Dept Ciencias Solo, Fortaleza, Ceara, Brazil.
来源期刊	REVISTA CIENCIA AGRONOMICA
ISSN	0045-6888
EISSN	1806-6690
出版年	2021
卷号	52 期号:2
英文摘要	The desertification process causes soil degradation and a reduction in vegetation. The absence of visualisation techniques and the broad spatial and temporal dimension of the data hampers the identification of desertification and rapid decision-making by multidisciplinary teams. The 2D Scatter Plot is a two-dimensional visual analysis of reflectances in the red (630 - 690 nm) and near-infrared (760 - 900 nm) bands to visualise the spectral response of the vegetation. The hypothesis of this study is that visualising the reflectances of the vegetation by means of a 2D scatter plot will allow desertification to be inferred. The aim of this study was to identify desertified areas and characterise the spatial and temporal dynamics of the vegetation and soil during dry (DP) and rainy (RP) periods between 2000 and 2008, using a 2D scatter plot. The 2D scatter plot generated by the Envi (R) 4.8 software and the reflectances in bands 3 and 4 of the TM5 sensor were used within communities in the Iraucuba hub (Ceara, Brazil). The concentration densities of the near-infrared reflectances of the vegetation pixels were observed. Each community presented pixel concentrations with reflectances of less than 0.4 (40%) during each of the periods under evaluation, indicating little vegetation development, with further degradation caused by deforestation, the use of fire and overgrazing. The 2D scatter plot was able to show vegetation with low reflectance in the near infrared during both dry and rainy periods between 2000 and 2008, thereby inferring the occurrence of desertification.
英文关键词	Albedo Soil Line Time Series Big data
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:000691769400001
WOS关键词	LANDSAT
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364533
作者单位	[dos Santos, Thiago Costa; Toma, Raul Shiso] Univ Fed Ceara UFC, Dept Ciencias Solo, Fortaleza, Ceara, Brazil; [Teixeira, Adunias dos Santos] Univ Fed Ceara UFC, Dept Engn Agr, Fortaleza, Ceara, Brazil; [Terra, Fabricio da Silva] Univ Fed Vales Jequitinhonha & Mucuri UFVJM, Inst Ciencias Agr ICA, Dept Engn Agr & Ambiental, Unai, MG, Brazil; [Jario Moreira, Luis Clenio] Inst Fed Educ Ciencia & Tecnol Ceara IFCE, Limoeiro Do Norte, CE, Brazil
推荐引用方式 GB/T 7714	dos Santos, Thiago Costa,Teixeira, Adunias dos Santos,Terra, Fabricio da Silva,et al. Detecting desertification in different years and rainfall regimes by 2D Scatter Plot[J],2021,52(2).
APA	dos Santos, Thiago Costa,Teixeira, Adunias dos Santos,Terra, Fabricio da Silva,Jario Moreira, Luis Clenio,&Toma, Raul Shiso.(2021).Detecting desertification in different years and rainfall regimes by 2D Scatter Plot.REVISTA CIENCIA AGRONOMICA,52(2).
MLA	dos Santos, Thiago Costa,et al."Detecting desertification in different years and rainfall regimes by 2D Scatter Plot".REVISTA CIENCIA AGRONOMICA 52.2(2021).