Forest fires are one of the main problems that affect biodiversity and forest heterogeneity, which are caused by human or natural activities and even driven by climate change. The objective of this study was to analyze the severity of forest fires with the NBR index (Normalized Burn Ratio) in highland areas of Peru, and evaluate the vegetative recovery of forest species in the affected area with the NDVI index (Normalized Difference Vegetation Index). As a result, it was obtained that the type of vegetation in the affected area is the Andean Pajonal, the level of severity in the study area ranges from low to moderately high, with low severity being the predominant one, which occupies 57,562% of the study area. The NDVI evaluation of 2 weeks before, 2 weeks after and 3 months after the event show that there is a vegetative regeneration of the vegetation cover, two weeks after the event in...

The use of remote sensing is one of the most important tools for the evaluation of environmental problems, which are caused by humans or by natural activities and even driven by climate change. The objective of this research was to develop a model to determine the trophic state of lagoons in high Andean zones of Peru, based on remote sensing and GIS (Geographic information systems), in such a way that the estimation of the trophic state of these bodies of water can be determined without the need for a periodic or in situ sampling process. As a result, the model to determine the trophic state of the Paca and Ñahuimpuquio lagoon was obtained, it is TRIX = 5.943 - 0.000480B1 - 0.000695B2 + 0.00032B3 + 0.000811B4 - 0.000465B5, which is applicable to determine trophic state indexes during low levels, the model allows the elaboration of maps that facilitate the identification of zones with di...