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Spatial Distribution of Permafrost Degradation and Its Impact on Vegetation Phenology from 2000 to 2020 by Lina Che; Honghua Zhang; Luhe Wan is a Environmental Science article available to read on EtoBox.

What is Spatial Distribution of Permafrost Degradation and Its Impact on Vegetation Phenology from 2000 to 2020 about?

As global temperatures rise, permafrost is degraded. Permafrost degradation alters vegetation phenology and community composition, thereby affecting local and regional ecosystems. The Xing'an Mountains, located on the southern edge of the Eurasian permafrost region, are very sensitive to the impact of permafrost degradation on ecosystems. Climate change has direct effects on permafrost and vegetation growth, and analysis of the indirect effects of permafrost degradation on vegetation phenology based on the normalized difference vegetation index (NDVI) can explain the internal impact mechanisms of ecosystem components. Based on the temperature at the top of permafrost (TTOP) model, which was used to simulate the spatial distribution of permafrost areas in the Xing'an Mountains from 2000 to 2020, the areas of the three permafrost types showed a decreasing trend. The mean annual surface temperature (MAST) increased significantly at a rate of 0.008 °C year−1 from 2000 to 2020, and the southern boundary of the permafrost region moved north by 0.1–1 degrees. The average NDVI value of the permafrost region increased significantly in 8.34 % of the region. The significant correlations betwe

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Author

Lina Che; Honghua Zhang; Luhe Wan

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)