地理研究 ›› 2017, Vol. 36 ›› Issue (5): 850-860.doi: 10.11821/dlyj201705004

• 研究论文 • 上一篇    

基于不同分辨率卫星数据的林火排放对比研究

高浩(), 张甲珅, 郑伟, 刘诚   

  1. 国家卫星气象中心,北京 100081
  • 收稿日期:2016-10-13 修回日期:2017-01-17 出版日期:2017-05-20 发布日期:2017-05-31
  • 作者简介:

    作者简介:高浩(1982- ),男,河南封丘人,博士,高级工程师,主要从事生态环境监测和灾害评估工作。E-mail:gaohao@cma.gov.cn

  • 基金资助:
    国家自然科学基金项目(41171371);国家重点研发计划项目(2016YFA0600303)

Comparative study on the emission estimation from the forest fire based on different resolution satellite data

Hao GAO(), Jiashen ZHANG, Wei ZHENG, Cheng LIU   

  1. National Satellite Meteorological Center, Beijing 100081, China
  • Received:2016-10-13 Revised:2017-01-17 Online:2017-05-20 Published:2017-05-31

摘要:

基于30 m、500 m和1 km空间分辨率的TM、MODIS和AVHRR卫星遥感数据,估算2006年大兴安岭一次森林火灾的排放量,并评估空间分辨率对排放量估算的影响。结果显示:不同空间分辨率卫星估算的火烧迹地面积差异为4.3%~13.8%,随着空间分辨率降低,遥感估算火烧迹地面积逐渐减小。不同空间分辨率卫星估算的二氧化碳(CO2)、一氧化碳(CO)、甲烷(CH4)、非甲烷总烃(NMHC)、氮氧化物(NOx)、二氧化硫(SO2)、可吸入颗粒物(PM2.5)、黑炭(BC)、有机碳(OC)的排放量分别为1.01×106~1.64×106 t、6.07×104~9.58×104 t、2.91×103~4.51×103 t、4.61×103~7.18×103 t、1.83×103~3.01×103 t、5.00×102~7.79×102 t、7.82×103~12.1×103 t、3.10×102~5.02×102 t、4.79×103~7.46×103 t。空间分辨率对排放的估算有明显的影响,30 m对比500 m、1 km分辨率,500 m对比1 km分辨率卫星的排放差异分别为25.5%~29.6%,35.4%~39.2%和13.1%~13.7%。因此,未来基于卫星遥感估算林火排放时须考虑空间分辨率的影响。

关键词: 卫星遥感, 森林火灾, 排放估算, 空间分辨率, 差异

Abstract:

In this study, the emissions from forest fire in the Da Hinggan Mountains were estimated based on the TM, MODIS, and AVHRR satellite data, with spatial resolutions of 30 m, 500 m, and 1 km, respectively. In addition, the influences of different spatial resolutions on the emission estimation were quantitatively evaluated. Results showed that the discrepancy of burned scar based on different resolution satellite data is about 4.3%~13.8%, and the burned scar decreases with the decrease of spatial resolution. The total emissions range from forest fire for CO2, CO, CH4, nonmethane hydrocarbons (NMHC), NOx, SO2, PM2.5, BC, and OC were 1.01×106-1.64×106 t, 6.07×104-9.58×104 t, 2.91×103-4.51×103 t, 4.61×103 -7.18×103 t, 1.83×103-3.01×103 t, 5.00×102-7.79×102 t, 7.82×103-12.1×103 t, 3.10×102-5.02×102 t, and 4.79×103-7.46×103 t, respectively. Furthermore, our study indicates the spatial resolution of the satellite has obvious influence on the emission estimation from forest fire. The discrepancies of the total emissions were about 25.5%-29.6%, 35.2%-39.2%, and 13.1%-13.7% among TM, MODIS, and AVHRR, with resolutions of 30 m, 500 m, and 1 km, respectively. We proposed that the effect of the satellite resolution on the emission estimation from forest fire should be given full consideration in the future.

Key words: remote sensing, forest fire, emission estimation, spatial resolution, discrepancy