Ms. Betsabe De la Barreda Bautista Profile

Betsabe De la Barreda Bautista

at Ctr de Investigación en Geografía y Geomática

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Proceedings Article | 18 September 2009 Paper

Vegetation cover change detection in Chamela-Cuixamala, Mexico

Betsabé De la Barreda Bautista, Alejandra López-Caloca

Proceedings Volume 7472, 747209 (2009) https://doi.org/10.1117/12.830547

KEYWORDS: Vegetation, Landsat, Ecosystems, Remote sensing, Statistical analysis, Image classification, Biological research, Satellites, Satellite imaging, Earth observing sensors

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In Mexico, and everywhere else, the ecosystems are constantly changing either by natural factors or anthropogenic activity. Remote sensing has been a key tool to monitoring these changes throughout history and also to understanding the ecological dynamics. Hence, sustainable development plans have been created in order to improve the decisionmaking process; thus, this paper analyses deforestation impact in a very important natural resourcing area in Mexico, considering land cover changes. The study area is located in the coast of Jalisco, Mexico, where deforestation and fragmentation as well as high speed touristic development have been the causes of enormous biodiversity losses; the Chamela-Cuixamala Biosphere Reserve is located within this area. It has great species richness and vast endemism. The exploitation of this biome is widespread all over the country and it has already had an impact in the reserve. The change detection multi-temporal study uses Landsat satellite imagery during the 1970-2003 time period. Thus, the objective of change detection analysis is to detect and localize environmental changes through time. The change detection method consists in producing an image of change likelihood (by post-classification, multivariate alteration detection) and thresholding it in order to produce the change map. Experimental results confirmed that the patterns of land use and land cover changes have increased significantly over the last decade. This study also analyzes the deforestation impact on biodiversity. The analysis validation was carried out using field and statistic data. Spatial-temporal changing range enables the analysis of the structural and dynamic effects on the ecosystem and it enhances better decision-making and public environmental policies to decrease or eliminate deforestation, the creation of natural protected areas as a biodiversity conservation method, and counteracting the global warming phenomena.

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