RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2022, Vol. 31 >> Issue (7): 1627-1640.doi: 10.11870/cjlyzyyhj202207019

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Space-time Pattern and Influencing Factors of Biomass Burning in Hubei Province Based on VIIRS

HE Xin-jie1, LI Rong1,2,ZHANG Fan1,2,WANG Xin-sheng1,2, CHEN Liang-fu3, TAO Ming-hui4, MEI Xin1,2 ,SONG Xiao-qing4   

  1. (1.College of Resources and Environment, Hubei University, Hubei Provincial Key Laboratory of Regional Development and 
    Environmental Response, Wuhan 430061, China;2.Hubei University, Hubei Agricultural Remote Sensing Application 
    Engineering Technology Research Center, Wuhan 430061, China;3.Sate Key Laboratory of Remote Sensing Science, 
    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China;
    4.China University of Geosciences，School of Geography and Information Engineering, Wuhan 430074, China)
  • Online:2022-07-20 Published:2022-08-22

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Abstract: Biomass burning is one of the important factors influencing the atmospheric environment. As a major agricultural province in China, Hubei Province is rich in agricultural resources. A comprehensive analysis of the biomass burning in Hubei Province can provide an important basis for Hubei Province to strengthen the management and control of biomass burning and improve air quality. Based on VIIRS 375 m thermal anomaly products, land use data and high-resolution remote sensing images, the main types of fire points of biomass burning in Hubei Province from 2012 to 2019 were extracted, revealing the temporal-spatial evolution process of biomass burning and its influencing factors .The results show that:(1)The fires are mainly concentrated in the central Jianghan Plian, and the low mountain and hilly regions in eastern Jianghan Plain .(2)The number of fire spots in Hubei Province showed a clear downward trend during the period 2012-2019, and the straw burning is the main type of biomass burning in Hubei Province. Straw burning fire spots and forest fire spots accounted for 67.43%and 32.57% respectively. (3)After 2015, the number of straw burning fire points decreased significantly, and maintained at a low level. It showed that the control effect was significant. However, the straw burning in Xiaogan City, Suizhou City, Wuhan City and Huanggang City have experienced serious rebounds due to lack of way of comprehensive utilization. Therefore, in addition to further strengthening the ban on burning, it is necessary to find more ways to form scientific and long-term control measures of straw burning. (4)The peak period of straw burning is mainly concentrated in the harvest season,with some small peaks of straw burning appeared in spring and winter.(5)The spatial distribution of straw burning fire spots has expanded and then shrunk. The fire points of the original straw burning hotspots have been significantly reduced in Xiangyang City , Jingzhou City, Xiantao City, Qianjiang City and the western Tianmen City. Forest fire points are mainly distribute in the northern and eastern regions of Hubei Province. Since 2016, the forest fire density in Hubei Province has been at a relatively low level.

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