Multitemporal Analysis of Urban Expansion by Remote Sensing in the Area of Huacachina Lagoon in Ica, Peru

Mendieta Torres W.K.; Castañeda-Olivera C.A. · Chemical Engineering Transactions (2025) · DOI: 10.3303/cet25117203

Resumen

Globally, the soil resource has undergone several changes associated with human activities and climate change, being urban expansion one of the main authors. Therefore, the present research analyzed by remote sensing the changes of urban expansion in the Huacachina lagoon area in Ica, Peru from 1988 to 2023. For the study, 7 spectral indices (BAEI, NDBI, BU, NDWI, MNDWI, NDVI, MSAVI2) were evaluated in a supervised manner with Support Vector Machine (SVM) classifier and in accordance with the thematic evaluation guide of the General Directorate of Land Management (GDLM), considering the BAEI index to quantify the urban cover, the MSAVI2 index to quantify the vegetation cover and the MNDWI index to quantify the body of water. The images used correspond to an image free of clouds and in the hottest season of the study area. The results indicated growth of the urban center and variation of vegetation cover and water mirror. The results indicated growth of the urban center and variation in vegetation cover and water mirror. The growth of the urban center was constant throughout the analyzed timeline, but intensified in the period from 2009 to 2016. The same happened with the water body, according to the MNDWI index, in this period the surface extension decreased faster. With respect to vegetation cover for this period, in 2009, vegetation cover occupied part of the lagoon surface, and by 2016, it covered the entire surface of the Huacachina Lagoon. The multitemporal analysis concludes that vegetation cover will continue to decrease in the coming years, causing climatic variations in the area, and this allows alerting the competent authorities to take measures to value the ecosystem from the approach of sustainable land use, being unsustainable that the urban area continues to grow in the area of the Huacachina Lagoon. Copyright

Instituciones: Universidad César Vallejo