Vegetation trends in a protected area of the Brazilian Atlantic forest
نویسندگان
چکیده
Among worldwide tropical forest ecosystems, the Atlantic of Brazil stands out as a highly fragile area and biodiversity hotspot, with high degree endemism. The Caparaó National Park is an important conservation for this biome, where recent studies have found new species animals plants, including endemic vulnerable ones. We analyzed interannual seasonal trends in vegetation its buffer zone, using data from MODIS indices between years 2001 2019. Our methods included both parametric (linear trend linear correlation) non-parametric (Mann-Kendall) analyses trends, wavelet transform, analysis. also studied correlation index variability monthly rainfall TRMM satellite. generated regression analyses, precipitation independent variable Normalized Difference Vegetation Index (NDVI) Enhanced (EVI) dependent variable, repeated procedure time lags 0 to 3 months. In accordance findings temporal profiles Mann Kendall method identified prevalence decreasing values Park, higher than 90% regions result was significant, EVI 80% NDVI. For there increasing NDVI EVI, 50% significant. most area, positive slope while predominantly negative. r indicated tendencies zone negative within park. 66.9% results were ndvi 51.7% value slope. park 68.9% methods; 93.8% 93.9% These differences may be evidence how responds disturbances, once fragmented does not same protection area. native study shows similarities, detected by analysis wavelets transform. existence two annual cycles common feature biome forest. R indicate dependence on Values 0.4 0.8 class, represented almost EVI. class accounted 27% 38% respectively. protected less rainfall, which can attributed fact that it better meet water needs through available soil. addition, due anthropogenic pressures fragmentation, advanced successional stages. collaborate range Brazilian This methodology applied larger areas around world provide information conditions influence climatic variables.
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ژورنال
عنوان ژورنال: Ecological Engineering
سال: 2021
ISSN: ['1872-6992', '0925-8574']
DOI: https://doi.org/10.1016/j.ecoleng.2021.106180