极地研究 ›› 2020, Vol. 32 ›› Issue (4): 555-564.DOI: 10. 13679/j.jdyj.20190075

• 研究论文 • 上一篇    下一篇

北极地区活跃火的时空分布格局分析

薛乃婷1, 张震1, 杜志恒2, 胡克宏1, 张莎莎1, 黄丹妮1   

  1. 1.安徽理工大学测绘学院, 安徽 淮南 232000;
    2.中国科学院西北生态环境资源研究院冰冻圈科学国家重点实验室, 甘肃 兰州730000
  • 收稿日期:2019-12-30 修回日期:2020-04-22 出版日期:2020-12-30 发布日期:2020-12-24
  • 通讯作者: 张震
  • 基金资助:
    国家自然科学基金(41701087)资助

Spatiotemporal distribution patterns of active fire in the Arctic region

Xue Naiting1, Zhang Zhen1, Du Zhiheng2, Hu Kehong1, Zhang Shasha1, Huang Danni1   

  1. 1. School of Geomatics, Anhui University of Science and Technology, Huainan 232000, China;
    2.State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources,  Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2019-12-30 Revised:2020-04-22 Online:2020-12-30 Published:2020-12-24

摘要:

基于火灾信息资源管理系统 (Fire Information for Resource Management System, FIRMS) MODIS (Moderate-resolution Imaging Spectroradiometer)与VIIRS(Visible Infrared Imaging Radiometer)的活跃火位置数据, 按照2000—2018年不同时间(年、月、时)和空间(国家)尺度分析了北极地区活跃火动态变化, 旨在为活跃火的预测和管理提供依据。研究结果表明: (1)2012—2018年, MODIS C6(MODIS Near Real-time 1 km active fire products, MCD14DL) 与VIIRS V1(VIIRS Near Real-time 375 m active fire products, VNP14­IMGTDL_NRT)活跃火频次趋势一致, 最大值与最小值分别出现在 2013 年与2015年; (2)北极地区活跃火频次累计最多的国家是俄罗斯, 最少的国家是挪威, 两套产品年际变化在不同国家特征颇为相似; (3)北极地区7国(俄罗斯、美国、加拿大、丹麦、挪威、瑞典和芬兰)活跃火现象主要集中在6—8月, 活跃火观测时段主要集中在各国当地时间12时左右。

关键词: MODIS , VIIRS , 北极地区 , 活跃火 , 时空分布

Abstract:

Based on Fire Information for Resource Management System (FIRMS), MODIS and VIIRS active fire position data, dynamic changes of active fires in the Arctic region were analyzed at different temporal (yearly, monthly, and hourly) and spatial (country) scales from 2000 to 2018, to provide a basis for the prediction and management of active fires. The results showed that: (1) from 2000 to 2018, MODIS C6 (MODIS NRT 1 km active fire products, MCD14DL) and VIIRS V1 (VIIRS NRT 375 m active fire products, VNP14IMGTDL_NRT) active fire frequency trends were consistent, with maximum and minimum values appearing in 2013 and 2015 respectively. (2) In the Arctic region, the country with the greatest cumulative active fire frequency was Russia, and the country with the lowest active fire frequency was Norway. The interannual variations of the two sets of products were quite similar in different countries. (3) The active fires in the seven countries of the Arctic region (Russia, the United States, Canada, Denmark, Norway, Sweden, and Finland) were mainly concentrated in June–August, and the active fire observation period was mainly concentrated around 12:00 local time in various countries.