Research article |
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Monitoring fire regimes and assessing their driving factors in Central Asia |
YIN Hanmin1,2, Jiapaer GULI1,2,3,*(), JIANG Liangliang1,2, YU Tao1,2, Jeanine UMUHOZA1,2, LI Xu1,2 |
1State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China 2University of Chinese Academy of Sciences, Beijing 100039, China 3Research Center for Ecology and Environment of Central Asia of Chinese Academy of Sciences, Urumqi 830011, China |
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Abstract Relatively little is known about fire regimes in grassland and cropland in Central Asia. In this study, eleven variables of fire regimes were measured from 2001 to 2019 by utilizing the burned area and active fire product, which was obtained and processed from the GEE (Google Earth Engine) platform, to describe the incidence, inter-annual variability, peak month and size of fire in four land cover types (forest, grassland, cropland and bare land). Then all variables were clustered to define clusters of fire regimes with unique fire attributes using the K-means algorithm. Results showed that Kazakhstan (KAZ) was the most affected by fire in Central Asia. Fire regimes in cropland in KAZ had the frequent, large and intense characters, which covered large burned areas and had a long duration. Fires in grassland mainly occurred in central KAZ and had the small scale and high-intensity characters with different quarterly frequencies. Fires in forest were mainly distributed in northern KAZ and eastern KAZ. Although fires in grassland underwent a shift from more to less frequent from 2001 to 2019 in Central Asia, vigilance is needed because most fires in grassland occur suddenly and cause harm to humans and livestock.
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Received: 22 September 2020
Published: 10 May 2021
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Corresponding Authors:
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About author: *Jiapaer GULI (E-mail: glmr@ms.xjb.ac.cn)
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