Climate Change Research ›› 2020, Vol. 16 ›› Issue (5): 545-554.doi: 10.12006/j.issn.1673-1719.2020.019

• Cryosphere Service • Previous Articles     Next Articles

Effects of forest fires on ecological service in permafrost regions

LI Xiao-Ying1,2,3, JIN Hui-Jun2,3,4(), HE Rui-Xia3, HUANG Ya-Dong3   

  1. 1 Key Laboratory of Sustainable Forest Ecosystem Management of Ministry of Education/ Northern Forest Fire Management Key Laboratory of the State Forestry and Grassland Bureau, College of Forestry, Northeast Forestry University, Harbin 150040, China
    2 Institute of Cold-Regions Engineering Science and Technology/ Northeast-China Observatory and Research-Station of Permafrost Geo-Environment of Ministry of Education, Northeast Forestry University, Harbin 150040, China
    3 State Key Laboratory of Frozen Soils Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    4 School of Civil Engineering, Northeast Forestry University, Harbin 150040, China
  • Received:2020-02-03 Revised:2020-03-24 Online:2020-09-30 Published:2020-09-30
  • Contact: JIN Hui-Jun


Under a warming climate, increasing forest fires in the Greater Hinggan Mountains in Northeast China has led to the degradation of permafrost and recovery and succession of vegetation, obviously impacting on service functions of the forest ecosystem. In this study, Mangui and Alongshan in the northern Greater Hinggan Mountains were chosen as the study areas. Through quantitative methods, we calculated the benefits and losses of CO2 fixation and O2 release by the forest ecosystem; purifying the environment, including the absorption of SO2 and dusts; hydrological benefits, including flood control and water conservation; microclimate benefit loss; wildlife conservation and recreational benefits. Significant losses of ecosystem service values have occurred after fires in Mangui and Alongshan. The losses in the benefits of CO2 fixation and O2 release and purifying the environment were the two largest, accounting for 42.34% and 41.94% of the total benefit loss, respectively. The losses in the wildlife conservation benefits were the least (0.80%). Those in microclimatic, recreational and hydrological benefits, accounted for 8.61%, 3.49%, and 2.82%, respectively. Even if the coniferous forest ecosystem restored to the broad-leaved forest ecosystem after the fire, the loss in the benefit of purifying the environment could still reach 69.3%. Therefore, it is essential to systematically protect coniferous forests in permafrost areas and effectively reduce the occurrences of forest fires, so as to maintain the stability, sustainability and service ability of forest ecosystem in permafrost regions.

Key words: Permafrost region, Forest fire, Ecosystem service, Coniferous forests

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