Fig. 5
From: Predominantly positive XCO2 anomalies in the Caatinga biome highlight carbon vulnerability
Moran scatterplots of XCO2 anomalies by Caatinga phytophysiognomic biozones from 2015 to 2023. Each plot shows the relationship between standardized XCO2 anomalies (x-axis) and their spatial lag (y-axis). The regression line indicates the slope corresponding to the local Moran’s I value, reflecting the degree of spatial autocorrelation within each vegetation type. Steeper slopes, as observed in the Steppe Savanna and Contact areas, indicate stronger spatial structure and clustering, while flatter slopes (e.g., Dense Ombrophilous Forest) suggest weaker spatial dependence.
