Cambio de uso del suelo y dinámica de fragmentación en la provincia de Chimborazo, Ecuador, años: 2000 - 2020: Un enfoque basado en análisis multitemporal vectorial
DOI:
https://doi.org/10.56124/sapientiae.v8i17.010Keywords:
cambio de uso de suelo, análisis multitemporal, geoinformación, fragmentación, ChimborazoAbstract
In land use studies, multitemporal analysis is a crucial technique to identify and quantify the transformations that the territory undergoes, which allows understanding the updated situation of the territory and serves as a decision-making tool. For this study, the province of Chimborazo - Ecuador was selected due to the extensive knowledge and data of this province. Vector geoinformation on land use was collected at a scale of 1:250000 from two seasons: 2000 to 2020, maintaining the same scale to standardize the relationship with the national object catalog in both seasons. Subsequently, a flow chart of cartographic inputs, geoprocesses and products was generated by consulting an algorithm to an artificial intelligence, which was subsequently developed in Python and QGIS to determine the area that underwent land use transformation within these two periods. Once the area of change was determined, it was crossed with an input at a scale of 1:25000 in order to know the state of land use at a higher resolution scale. Subsequently, with the use of this information, descriptive statistics were generated to present information on land use surfaces in 2021. In addition, a fragmentation analysis was carried out using a fragmentation coefficient based on the shape and surface variables to determine the level of fragmentation of the land covers. The areas of native forest and agricultural land were determined to be the predominant ones in the province, but the area with the greatest transformation in this 20-year period is the native forest, within which, by crossing with a higher resolution scale, the ecosystem that has suffered the greatest impact of transformation is the moorland. In addition, with the analysis of cover fragmentation, it has been determined that most of the covers are in a medium fragmentation range.
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