4.7 Article

Satellite-Based Analysis of Spatiotemporal Wildfire Pattern in the Mongolian Plateau

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REMOTE SENSING
卷 15, 期 1, 页码 -

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MDPI
DOI: 10.3390/rs15010190

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wildfire; burned area; MODIS; Mongolian Plateau; climate change

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This study analyzes the spatial and temporal patterns of wildland fires in the Mongolian Plateau from 2001 to 2021 using NASA burned area data. The study reveals that an average of 1.3 x 10(4) km(2) is burned by fires annually in the region, with spring and autumn being the peak fire seasons. Most of the wildfires occur in the northeastern and southwestern regions on the border of Mongolia and China. The Dornod aimag in Mongolia and Hulunbuir in China are the most fire-prone regions that require prioritized fire protection.
Burned area is a critical input to biomass burning carbon emissions algorithms and for understanding variability in fire activity due to climate change. This study presents the spatial and temporal patterns of wildland fires in the Mongolian Plateau (MP) using Collection 6 NASA MCD64A1 500 m global Burned Area product from 2001 to 2021. Both inter- and intra-annual fire trends and variations in two subregions, Mongolia and China's Inner Mongolia, were analyzed. The results indicated that an average area of 1.3 x 10(4) km(2) was consumed by fire per year in the MP. The fire season has two peaks: spring (March, April, and May) and autumn (September, October, and December). The profiles of the burnt area for each subregion exhibit distinct seasonality. The majority of wildfires occurred in the northeastern and southwestern regions of the MP, on the border between Mongolia and China. There were 2.7 x 10(4) km(2) of land burned by wildfires in the MP from 2001 to 2021, 57% of which occurred in spring. Dornod aimag (province) of Mongolia is the most fire-prone region, accounting for 51% of the total burned area in the MP, followed by Hulunbuir, at 17%, Sukhbaatar, at 9%, and Khentii at 8%. The changing patterns of spatiotemporal patterns of fire in the MP were analyzed by using a spatiotemporal cube analysis tool, ArcGIS Pro 3.0.2. The results suggested that fires showed a decreasing trend overall in the MP from 2001 to 2021. Fires in the southern region of Dornod aimag and eastern parts of Great Xing'an Mountain showed a sporadic increasing trend. Therefore, these areas should be priorities for future fire protection for both Mongolia and China.

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