Trend analysis of the normalized difference vegetation index in the Casacay river subbasin, Ecuador (1989-2022) (Original).
Keywords:
NDVI, Casacay, Mann Kendall, LandsatAbstract
Changes in vegetation cover are indicators that can lead to soil erosion or functional loss. Therefore, the objective of this research was to analyze the trend of the Normalized Difference Vegetation Index in the Casacay River sub-basin for the period 1989-2022. Addressing the evolution of vegetation cover, using Landsat images to obtain the NDVI, in order to identify changes in vegetation and their possible relationship with climate change and human activity. A general trend towards negative NDVI values, indicative of a decrease in vegetation activity, is observed. This trend is attributed to the possible impact of climate change and anthropogenic activity in recent decades. Although information between 2000 and 2012 is absent due to adverse weather conditions and failures in Landsat +7, the importance of continuous monitoring of vegetation cover to understand changes in ecosystems and support environmental management and adaptation to climate change is highlighted. These tools are essential for the long-term sustainable conservation of natural resources.
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