Land use and land cover change detection using satellite remote sensing techniques in a tropical basin

Abstract

In this investigation, the land use and land cover change detection are applied on a tropical basin, 10 change detection methods have been evaluated; nine of these are classified like a methods based on pixels and the last corresponds to the classified object method. Eleven images were acquired from the Landsat satellite in the period between 1986 and 2016. The percentages of change area according to each change detection method of pre-classification were: (a) Image difference: 7%-10%, (b) Image ratioing: 0.5%-3%, (c) NDVI image difference: 1%-4%, and (d) Principal component image difference: 4%-10%. The post-classification methods contributed with the preclassification methods in a better approximation to the area difference proportion associated to each land use/land cover occurred in the study zone. Among the postclassification methods, it was found that the support vector machine provide results more approximate between these and their accuracy indexes are upper than those obtained through the maximum likelihood algorithm.

Calibration of diffusion‐advection process models for organochlorine pesticides in a tropical river

“…Under the four scenario, $$K$$ parameter gives values close to values estimated for biological reactors reported by Maldonado‐Maldonado et al. (2021) and Freytez et al. (2021), indicating that with high likelihood there is a autochthonous strain able to biodegrade the OCPs in the soil matrix.…”

“…The study area is the Tucutunemo River basin located in the Aragua State at the central region of Venezuela (Exhibit 3). The area of the basin is limited by the following coordinates: 67 (Cárdenas et al, 2019(Cárdenas et al, , 2021b(Cárdenas et al, , 2021cMárquez et al, 2019Márquez et al, , 2021. The Tucutunemo River follows a path that crosses the agricultural area.…”

A novel approach to model for the management of drinking water and sanitation services at municipal scale

“…The data that supports the findings of this study are available in the supplementary material of these articles, Márquez and Carrillo (2015), Márquez and Peraza (2018), Márquez et al. (2018,a,b, 2019a,b, 2020, 2021a, 2021b). In addition, the endorsement of the database is available in HIDROCENTRO (2021), HIDROLAB‐TORO (2021), IAGUASANJO (2021).…”

An approach to remediation of a tropical aquifer contaminated with hydrocarbons

“…Land use and land cover in the Guacamaya basin were obtained from applying the postclassification method supported by the maximum likelihood algorithm on a Landsat 8 OLI (L‐8OLI) satellite image using the tools of ENVI V‐4.7 (License No 9F3GP‐B8TB6‐9F7MT‐FP8P4‐94W92) and ArcGIS V‐10.0 (Licence No 371058959 software (Márquez et al., 2019, 2021a). The satellite data acquisition was accomplished from the EarthExplorer web site, as a courtesy of the US Geological Survey (USGS) (USGS, 2021).…”

“…Location of the MWs within the gas station including the following references: (a) map showing the land use and land cover for Guacamaya river basin, (b) Relative position of Guacamaya river basin and the Carabobo state, (c) Relative position of Carabobo state and Venezuela. Source: own elaboration Land use and land cover in the Guacamaya basin were obtained from applying the postclassification method supported by the maximum likelihood algorithm on a Landsat 8 OLI (L-8OLI) satellite image using the tools of ENVI V-4.7 (License No 9F3GP-B8TB6-9F7MT-FP8P4-94W92) and ArcGIS V-10.0 (Licence No 371058959 software(Márquez et al, , 2021a. The satellite data acquisition was accomplished from the EarthExplorer web site, as a courtesy of the US Geological Survey (USGS) (USGS, 2021).…”